WO2005098320A1 - 空気調和システム - Google Patents
空気調和システムInfo
- Publication number
- WO2005098320A1 WO2005098320A1 PCT/JP2005/005235 JP2005005235W WO2005098320A1 WO 2005098320 A1 WO2005098320 A1 WO 2005098320A1 JP 2005005235 W JP2005005235 W JP 2005005235W WO 2005098320 A1 WO2005098320 A1 WO 2005098320A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- air
- heat
- conditioning system
- adsorption
- air conditioning
- Prior art date
Links
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
- F24F3/1411—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
- F24F3/1411—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant
- F24F3/1429—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant alternatively operating a heat exchanger in an absorbing/adsorbing mode and a heat exchanger in a regeneration mode
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/023—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units
- F25B2313/0233—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units in parallel arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/031—Sensor arrangements
- F25B2313/0311—Pressure sensors near the expansion valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/031—Sensor arrangements
- F25B2313/0314—Temperature sensors near the indoor heat exchanger
Definitions
- the present invention relates to an air conditioning system, and more particularly to an air conditioning system that processes indoor latent heat load and sensible heat load by performing a vapor compression refrigeration cycle operation.
- an air conditioner that performs indoor cooling and dehumidification has been known (for example, see Patent Document 1).
- O Such an air conditioner is an outdoor heat exchanger serving as a heat source side heat exchanger.
- a vapor compression type refrigerant circuit having a heat exchanger and indoor heat exchange as air heat exchange is provided, and a refrigerant is circulated in the refrigerant circuit to perform a refrigeration cycle operation.
- This air conditioner sets the evaporation temperature of the refrigerant in the indoor heat exchanger to be lower than the dew point temperature of the indoor air, and performs indoor dehumidification by condensing moisture in the indoor air.
- a dehumidifier having a heat exchanger provided with an adsorbent on its surface is also known (for example, see Patent Document 2).
- Such a dehumidifier has two heat exchangers provided with an adsorbent.
- the water cooled by the cooling tower is supplied to the heat exchanger that adsorbs the water, and the heated wastewater is supplied to the regenerated heat exchanger.
- the dehumidifier supplies the air dehumidified by the suction operation and the regenerating operation indoors!
- Patent Document 1 International Publication No. 03Z029728 pamphlet
- Patent Document 2 JP-A-7-265649
- the evaporation temperature of the refrigerant in the indoor heat exchanger is set lower than the dew point temperature of the indoor air, and the indoor latent heat load is processed by condensing the moisture in the air.
- sensible heat loads can be processed even if the evaporation temperature of the refrigerant in the indoor heat exchanger is higher than the dew point temperature of the indoor air.
- this dehumidifier has a problem that it can process indoor latent heat load but cannot process sensible heat load.
- the present inventor has invented an air conditioner equipped with a vapor compression type refrigerant circuit having a heat source side heat exchanger and an adsorption heat exchanger as a use side heat exchanger! / Puru (for example, see Japanese Patent Application No. 2003-351268).
- This air conditioner alternately performs an adsorption operation to adsorb moisture in the air to an adsorption heat exchange with an adsorbent provided on the surface and a regeneration operation to desorb the adsorption heat exchange water.
- the air that has passed through the exchange can be supplied indoors to process indoor sensible heat loads and latent heat loads.
- the moisture in the air is dehumidified by condensing the moisture in the air as in the former air conditioner, but the moisture in the air is absorbed by the adsorbent to dehumidify the air. It is not necessary to set the temperature lower than the dew point of air. Even if the evaporation temperature of the refrigerant is set to be higher than the dew point of air, dehumidification of air is possible. Therefore, according to this air conditioner, even when dehumidifying air, the evaporation temperature of the refrigerant can be set to a higher temperature than in the past, and the difference in high and low pressures in the refrigeration cycle can be reduced.
- the power consumption of the compressor can be reduced, and the COP can be improved.
- the indoor sensible heat load can be treated together.
- the inventor of the present application intends to apply the air conditioner using the above-mentioned adsorption heat exchanger to an air conditioner system (so-called multi-air conditioner system) installed in a building such as a building.
- an air conditioner system so-called multi-air conditioner system
- adsorption heat exchange V In such a large-scale air conditioning system, it is necessary to use adsorption heat exchange V.
- multiple air conditioners must be installed.
- the need to install a compressor, etc. as a result, increases the cost and increases the number of maintenance points.
- using adsorption heat exchange When installing an air conditioner with a normal air heat exchanger in combination with an air conditioner with a normal air heat exchanger, a compressor, etc., as a heat source, must be installed separately from the air conditioner with an air heat exchanger. The problem is that the cost increases and the number of maintenance points increases.
- An object of the present invention is to install an air conditioner using an adsorption heat exchanger or to install an air conditioner using an adsorption heat exchanger together with an air conditioner using an air heat exchanger. It is to suppress the cost increase and the increase in the number of maintenance parts that occur at the time.
- the air conditioning system according to the first invention is an air conditioning system that processes a latent heat load and a sensible heat load indoors by performing a vapor compression refrigeration cycle operation, and is connected in parallel with each other. And a plurality of second usage-side refrigerant circuits connected in parallel with each other.
- the first usage-side refrigerant circuit has an adsorption heat exchange having an adsorbent provided on its surface, and functions as an evaporator for the refrigerant to function as an adsorption heat exchange to adsorb moisture in the air to the adsorbent.
- the second usage-side refrigerant circuit has an air heat exchanger, and can perform heat exchange between the refrigerant and air.
- the air conditioning system can supply the air that has passed through the adsorption heat exchange indoors, and can supply the air that has passed through the air heat exchange indoors.
- This air conditioning system mainly processes indoor latent heat load by dehumidifying or humidifying the air passing through the adsorption heat exchange by alternately performing the adsorption operation and the regeneration operation of the adsorption heat exchanger.
- Plural first use side refrigerant circuits that can process indoor sensible heat loads mainly by exchanging heat with air passing through the air heat exchanger A so-called multi-type air conditioning system with Here, the plurality of first usage-side refrigerant circuits are connected to each other in parallel. The plurality of second usage-side refrigerant circuits are connected to each other in parallel.
- each system that includes the first usage-side refrigerant circuit hereinafter referred to as the latent heat load processing system
- each system that includes the second usage-side refrigerant circuit hereinafter referred to as the sensible heat load processing system
- a heat source for performing a vapor compression refrigeration cycle operation is arranged. to this As a result, it is possible to suppress an increase in cost and an increase in the number of maintenance points that occur when installing a plurality of air conditioners using an adsorption heat exchanger.
- An air conditioning system is the air conditioning system according to the first invention, wherein the air conditioning system includes a compression mechanism and a heat source side heat exchanger. And a heat-source-side refrigerant circuit used as a heat source for both the second use-side refrigerant circuit.
- the first usage-side refrigerant circuit is connected to a discharge gas communication pipe connected to the discharge side of the compression mechanism, and to a suction gas communication pipe connected to the suction side of the compressor mechanism.
- the first usage-side refrigerant circuit and the second usage-side refrigerant circuit are connected to one heat-source-side refrigerant circuit, they are combined into one heat-source power source, increasing costs and maintaining Is further suppressed.
- the first use side refrigerant circuit is connected to the discharge side and the suction side of the compression mechanism of the heat source side refrigerant circuit via the discharge gas communication pipe and the suction gas communication pipe, and the latent heat load processing is performed.
- the adsorption heat exchange functions as an evaporator or a condenser to perform dehumidification in an indoor air-conditioned space
- Dehumidification or humidification can be performed according to the needs of each indoor air-conditioned space, such as humidification in other air-conditioned spaces.
- the compressor mechanism can be installed at a place such as outdoors, which is different from the first and second use side refrigerant circuits, indoor noise and vibration can be reduced.
- the compression mechanism includes not only one compressor but also one in which two or more compressors are connected in parallel.
- An air conditioning system is an air conditioning system that processes a latent heat load and a sensible heat load indoors by performing a vapor compression refrigeration cycle operation, Circuit, a plurality of second usage-side refrigerant circuits connected to each other in parallel, and a heat source-side refrigerant circuit used as a heat source for both the first usage-side refrigerant circuit and the second usage-side refrigerant circuit.
- the first usage-side refrigerant circuit has an adsorption heat exchange having an adsorbent provided on its surface, and functions as an evaporator for the refrigerant to function as an adsorption heat exchange to adsorb moisture in the air to the adsorbent.
- the second use side refrigerant circuit has air heat exchange, and can perform heat exchange between refrigerant and air. is there.
- the heat source side refrigerant circuit has a compression mechanism and a heat source side heat exchange.
- the first usage-side refrigerant circuit is connected to a discharge gas communication pipe connected to the discharge side of the compression mechanism, and to a suction gas communication pipe connected to the suction side of the compressor mechanism.
- the air conditioning system can supply the air that has passed through the adsorption heat exchanger indoors, and can supply the air that has passed through the air heat exchanger indoors.
- the indoor latent heat load is mainly treated by dehumidifying or humidifying the air passing through the adsorption heat exchange by alternately performing the adsorption operation and the regeneration operation of the adsorption heat exchanger.
- 1st use side refrigerant circuit that can process indoor heat by exchanging heat with the air passing through the air heat exchanger.
- configure a multi-type air conditioning system since both the first usage-side refrigerant circuit and the plurality of second usage-side refrigerant circuits are connected to one heat-source-side refrigerant circuit, the heat-source-side refrigerant circuits are combined into one. Increases in costs and maintenance locations are suppressed.
- the first use side refrigerant circuit is connected to the discharge side and the suction side of the compressor mechanism of the heat source side refrigerant circuit via the discharge gas communication pipe and the suction gas communication pipe, and the latent heat load processing is performed.
- the adsorption heat exchange functions as an evaporator or as a condenser, so that in indoor air-conditioned spaces, It is possible to perform dehumidification or humidification according to the needs of each indoor air-conditioned space, such as humidifying other air-conditioned spaces while performing dehumidification.
- the compression mechanism can be installed at a place such as outdoors, which is different from the first and second usage-side refrigerant circuits, indoor noise and vibration can be reduced.
- the compression mechanism includes not only one compressor but also one in which two or more compressors are connected in parallel.
- An air conditioning system is the air conditioning system according to the second or third invention, wherein the second usage-side refrigerant circuit is connected to a liquid side of the heat source side heat exchanger. It is connected to the liquid communication pipe and is switchably connected to the discharge gas communication pipe and the suction gas communication pipe via the cutout.
- the second usage-side refrigerant circuit is connected to the heat-source-side heat exchange liquid side of the heat-source-side refrigerant circuit via a liquid communication pipe, and the discharge gas communication pipe is connected to the discharge side and the suction side of the compression mechanism.
- a sensible heat load processing system is connected to the compressor via the suction gas communication pipe, and the connection state between the discharge side and the suction side of the compression mechanism can be switched by the switching mechanism.
- the air heat exchange can function as a condenser to heat the room indoors, or the cutout can be connected through the suction gas connection pipe.
- the air heat exchanger functions as an evaporator or a condenser, thereby performing cooling in an indoor air-conditioned space and heating in another air-conditioned space. It is possible to configure an air-conditioning system that simultaneously performs cooling and heating according to the needs of various places indoors, that is, so-called simultaneous operation of cooling and heating.
- An air conditioning system is the air conditioning system according to the second or third invention, wherein the second usage-side refrigerant circuit is connected to a liquid side of the heat source side heat exchanger. It is connected to the liquid connection pipe and the suction gas connection pipe.
- the second usage-side refrigerant circuit is connected to the heat-source-side heat exchange liquid side of the heat-source-side refrigerant circuit via a liquid communication pipe, and the suction side of the compression mechanism is connected to the suction gas communication pipe via the suction gas communication pipe.
- An air conditioning system is the air conditioning system according to any one of the second to fifth aspects, wherein the first usage-side refrigerant circuit and the second usage-side refrigerant circuit form an integrated usage unit. Make up.
- the first usage-side refrigerant circuit and the second usage-side refrigerant circuit constitute a solid-state usage unit.
- the air conditioner system according to the seventh invention is an air conditioner system according to the sixth invention.
- the utilization unit can supply indoor air dehumidified or humidified in the adsorption heat exchanger.
- dehumidified or humidified (ie, latent heat-treated) air can be supplied indoors to the adsorption heat exchanger, that is, the first use-side refrigerant circuit.
- the unit can perform only the operation of dehumidifying or humidifying the indoors.
- An air conditioning system is the air conditioning system according to the sixth invention, wherein the utilization unit converts the air dehumidified or humidified in the adsorption heat exchanger into air heat exchange. In addition, heat exchange with the refrigerant is possible.
- air that has been dehumidified or humidified can be further subjected to sensible heat treatment in the adsorption heat exchanger, that is, the first use-side refrigerant circuit.
- the sensible heat load is processed to a level that is not suitable for the target indoor air temperature due to the latent heat load being processed to some extent by the adsorption heat exchange ⁇ , this air cannot be blown into the room as it is.
- an operation of blowing indoors can be performed.
- An air conditioning system is the air conditioning system according to any of the second to eighth inventions, which calculates a required latent heat treatment capability value and a required sensible heat treatment capability value, The operating capacity of the compression mechanism is controlled based on the required latent heat treatment capacity and the required sensible heat treatment capacity.
- the required latent heat treatment capacity value and the required sensible heat treatment capacity value are calculated, and the operating capacity of the compression mechanism is controlled based on these values.
- the processing of the latent heat load in the load processing system and the processing of the sensible heat load in the sensible heat load processing system having an air heat exchanger can be performed simultaneously. As a result, even when the heat sources of the latent heat load processing system and the sensible heat load processing system are shared, the operation capacity of the compression mechanism constituting the heat source can be controlled well.
- the air conditioning system according to the tenth invention is the air conditioning system according to the ninth invention, wherein the entire system is based on the required latent heat treatment capacity value and the required sensible heat treatment capacity value.
- the target evaporating temperature value and the target condensing temperature value of the body are calculated, and the operating capacity of the compression mechanism is controlled based on the target evaporating temperature value and the target condensing temperature value.
- An air conditioning system is the air conditioning system according to the tenth aspect, wherein an air temperature difference is calculated from the target evaporation temperature value and the evaporation temperature value, and the target condensing temperature value and the evaporation temperature are calculated.
- the condensing temperature difference is calculated from the temperature value and the operating capacity of the compression mechanism is controlled based on the evaporating temperature difference and the condensing temperature difference.
- An air conditioning system is the air conditioning system according to the ninth to eleventh aspects, wherein the switching time interval between the adsorption operation and the regeneration operation of the adsorption heat exchange is changed. .
- the required sensible heat treatment capacity value increases and the sensible heat treatment capacity in the second usage-side refrigerant circuit needs to be increased.
- the latent heat treatment capacity to be treated in the adsorption heat exchanger is reduced by increasing the switching time interval between the adsorption operation and the regeneration operation of adsorption heat exchange.
- the sensible heat treatment capacity of the latent heat load treatment system can be increased by increasing the sensible heat treatment capacity (that is, by increasing the sensible heat treatment capacity ratio in the adsorption heat exchanger).
- the adsorption operation and the regeneration operation of the adsorption heat exchanger are performed.
- the sensible heat treatment capacity to be treated in the adsorption heat exchanger is reduced and the latent heat treatment capacity is increased (that is, the ratio of the sensible heat treatment capacity in the adsorption heat exchange ⁇ is reduced).
- the latent heat treatment capacity of the load processing system can be increased.
- the sensible heat treatment capacity of the adsorption heat exchange without increasing the operating capacity of the compression mechanism is achieved by changing the switching time interval between the adsorption operation and the regeneration operation of the adsorption heat exchanger. Since the ratio can be changed, the entire air conditioning system is not wasted, and efficient operation can be performed.
- An air conditioning system is according to any one of the first to twelfth inventions.
- an air conditioning system when the system is started, air exchanged in the air heat exchanger is supplied indoors, and outdoor air is prevented from passing through adsorption heat exchange.
- sensible heat treatment is mainly performed by supplying air that has been heat-exchanged in the air heat exchanger indoors, and outdoor air does not pass through adsorption heat exchange ⁇ Therefore, when the system is started, it is possible to prevent external heat from being introduced even when the air conditioning capacity of the latent heat load processing system is not being exerted. And the target temperature of the indoor air can be quickly reached.
- a latent heat load processing system that has adsorption heat exchange and mainly processes indoor latent heat loads
- a sensible heat load processing system that has an air heat exchanger and mainly processes indoor sensible heat loads
- cooling or heating can be performed quickly at system startup.
- An air conditioning system is the air conditioning system according to any one of the first to twelfth inventions, wherein at the time of system startup, the adsorption operation and the regeneration operation of the plurality of adsorption heat exchangers are performed. With the switching stopped, the outdoor air passes through one of the multiple adsorption heat exchangers and is then discharged to the outside, and the indoor air passes through the outdoor air among the multiple adsorption heat exchanges. After passing through an adsorption heat exchange different from the exchange, supply it indoors again.
- An air conditioning system is the air conditioning system according to any one of the eleventh to twelfth inventions, wherein the adsorption operation of the adsorption heat exchanger and the reactivation at the time of system startup are performed.
- the switching time interval of the raw operation is made longer than in the normal operation.
- the target time of indoor air can be quickly reached by mainly performing sensible heat treatment by setting the switching time interval in the adsorption heat exchanger longer than during normal operation.
- a latent heat load processing system having adsorption heat exchange and mainly processing indoor latent heat loads and a sensible heat load processing system having an air heat exchanger and mainly processing indoor sensible heat loads
- cooling or heating can be performed quickly when the system is started.
- An air conditioning system is the air conditioning system according to any one of the thirteenth to fifteenth inventions, wherein the operation at the time of starting the system is canceled after a predetermined time of the system starting force has elapsed. You.
- the operating force at the time of system start-up The system start-up force After a sufficient time to perform the sensible heat treatment, the outdoor air is passed through the adsorption heat exchanger to perform latent heat treatment, By starting switching between the adsorption operation and regeneration operation of the adsorption heat exchanger and reducing the switching time interval for adsorption heat exchange, it can be quickly switched to normal operation for processing indoor latent and sensible heat loads. Can be migrated.
- An air conditioning system is the air conditioning system according to any one of the thirteenth to fifteenth aspects, wherein the operation at the time of starting the system includes the indoor air target temperature and the indoor air temperature. Is released after the temperature difference between the two becomes equal to or less than the predetermined temperature difference.
- the operating force at the time of system start-up After the temperature difference between the target temperature of indoor air and the temperature of By passing latent heat through the adsorption heat exchanger, starting the switching between the adsorption operation and the regeneration operation of the adsorption heat exchanger, and reducing the switching time interval of the adsorption heat exchanger. It is possible to quickly shift to the normal operation for processing the load and the sensible heat load.
- the air conditioning system according to the eighteenth invention is the air conditioning system according to any one of the thirteenth to seventeenth inventions, wherein the indoor air target is set before starting operation at system startup. Determines whether the temperature difference between the temperature and the indoor air temperature is equal to or less than a predetermined temperature difference, and determines whether the temperature difference between the target indoor air temperature and the indoor air temperature is equal to or less than the predetermined temperature difference. If, the operation at system startup is not performed.
- the air conditioning system according to the nineteenth invention is the air conditioning system according to any one of the air conditioning systems according to the second to eighth inventions, wherein the air conditioning system is connected to the gas side of the air heat exchanger.
- a pressure control mechanism is provided to control the evaporating pressure of the refrigerant in the air heat exchanger when the heat exchanger functions as a refrigerant evaporator.
- the air conditioning system according to the twentieth invention is the air conditioning system according to the nineteenth invention, wherein the air heat exchange is caused to function as an evaporator by a pressure regulating mechanism based on the dew point temperature of indoor air. Control the evaporation pressure of the refrigerant.
- the surface of the air heat exchanger is controlled. In this way, it is possible to prevent the moisture in the air from dew condensation, and to suppress the generation of drain water in the air heat exchange. This eliminates the need for a drain pipe in the unit having the second usage-side refrigerant circuit, and can save labor for installation of the unit having the second usage-side refrigerant circuit.
- the dew point temperature of the indoor air is measured by, for example, using a dew point sensor provided in a unit having an air heat exchanger, by actually measuring the dew point temperature of the indoor air sucked into the unit.
- a temperature / humidity sensor provided in a unit with an air heat exchanger, measure the temperature and humidity of indoor air sucked into the unit, and calculate the dew point temperature from these measured values. Is also good. If the unit with the air heat exchanger does not have a dew point sensor or temperature / humidity sensor, use the measured values of the dew point sensor, temperature and humidity sensor provided in the unit with the adsorption heat exchanger.
- a dew point sensor provided in a unit having an air heat exchanger
- the air conditioning system according to the twenty-first invention is the air conditioning system according to the twentieth invention.
- the air conditioning system calculates the target evaporation pressure value from the dew point temperature of the indoor air, and adjusts the pressure adjustment mechanism so that the refrigerant evaporation pressure detected by the pressure detection mechanism becomes equal to or higher than the target evaporation pressure value.
- An air conditioning system is the air conditioning system according to the twenty-first invention, further comprising a dew detection mechanism for detecting the presence or absence of dew in the air heat exchanger.
- the air conditioning system changes the target vapor pressure value when the dew detection mechanism detects dew.
- the condensation detection mechanism reliably detects the condensation in the air heat exchange, and when the condensation is detected, for example, changes the target evaporation pressure value to a higher value.
- the condensation detection mechanism reliably detects the condensation in the air heat exchange, and when the condensation is detected, for example, changes the target evaporation pressure value to a higher value.
- An air conditioning system is the air conditioning system according to the twenty-first invention, further comprising a dew detection mechanism for detecting the presence or absence of dew in the air heat exchanger.
- the air conditioning system stops the compressor mechanism when dew is detected by the dew detection mechanism.
- the condensation detection mechanism reliably detects dew condensation in the air heat exchange ⁇ ⁇ , and when the dew condensation is detected, stops the compression mechanism. Can be reliably prevented.
- An air conditioning system is the air conditioning system according to the twenty-first invention, further comprising a dew detection mechanism for detecting the presence or absence of dew in the air heat exchanger.
- the second usage-side refrigerant circuit includes a usage-side expansion valve connected to the liquid side of the air heat exchanger.
- the air-conditioning system closes the use-side expansion valve when dew is detected by the dew detection mechanism.
- the dew condensation detection mechanism reliably detects dew condensation in the air heat exchanger, and when the dew condensation is detected, the use-side expansion valve is closed. It is possible to reliably prevent dew condensation at the intersection.
- An air conditioning system is the air conditioning system according to any one of the second to eighth, nineteenth, and nineteenth aspects, wherein the air conditioning system switches between adsorption operation and regeneration operation of adsorption heat exchange. It is possible to change the time interval.
- the ratio of the sensible heat treatment capacity to the latent heat treatment capacity processed in the adsorption heat exchanger (hereinafter referred to as sensible heat treatment) is changed by changing the switching time interval between the adsorption operation and the regeneration operation of the adsorption heat exchanger. Capacity ratio), the required sensible heat treatment capacity increases, and if it is necessary to increase the sensible heat treatment capacity in the second use side refrigerant circuit, the adsorption operation and regeneration of adsorption heat exchange By making the operation switching time interval longer than in the normal operation, the ratio of the sensible heat treatment capacity in the first usage-side refrigerant circuit can be increased.
- the air conditioning system according to the twenty-sixth invention is the air conditioning system according to any one of the nineteenth to twenty-fifth inventions, wherein the second usage-side refrigerant circuit processes indoor sensible heat load at system startup.
- the first use-side refrigerant circuit is more effective than the indoor use of sensible heat load by the second use-side refrigerant circuit.
- the latent heat load by the latent heat load processing system is used to sufficiently reduce the humidity of the indoor air, and then the sensible heat load processing system Will be able to do.
- a latent heat load processing system having an adsorption heat exchange and mainly processing an indoor latent heat load and an air heat exchanger having an air heat exchanger so that moisture in the air is not condensed in the air heat exchanger.
- an air conditioning system combined with a sensible heat load treatment system that operates and processes only the indoor sensible heat load, the dew point temperature of indoor air Even when the system is started under high conditions, the sensible heat load can be promptly processed while preventing dew condensation in the air heat exchanger.
- the air conditioning system according to the twenty-seventh invention is the air conditioning system according to the twenty-sixth invention, wherein the air conditioning system is configured so that when the system starts up, the dew point temperature of the indoor air becomes equal to or lower than the target dew point temperature value. 2 Stop indoor sensible heat load processing by the use-side refrigerant circuit.
- the air conditioning system according to the twenty-eighth invention is the air conditioning system according to the twenty-sixth invention, wherein the second utilization side is used until the absolute humidity of the indoor air becomes equal to or lower than the target absolute humidity value at system startup. The processing of the indoor sensible heat load by the refrigerant circuit is stopped.
- An air conditioning system is the air conditioning system according to any of the twenty-sixth to twenty-eighth aspects, wherein the outdoor air performs a regeneration operation of a plurality of adsorption heat exchangers at system startup. The air is discharged outside after passing through the adsorption heat exchange, and the indoor air is again supplied indoors after passing through the adsorption heat exchanger that is performing adsorption operation among the plurality of adsorption heat exchangers. I do.
- the air conditioning system according to the thirtieth invention is the air conditioning system according to any one of the twenty-sixth to twenty-ninth inventions, wherein the target dew point of the indoor air is set before starting the operation at the time of starting the system. It is determined whether the temperature and the dew point temperature of the indoor air are equal to or less than the predetermined dew point temperature difference, and the target dew point temperature of the indoor air and the dew point temperature of the indoor air are equal to or less than the predetermined dew point temperature difference. If it is below, do not perform the operation at system startup.
- the air conditioning system according to the thirty-first invention is the air conditioning system according to any one of the twenty-sixth to twenty-ninth inventions, wherein a target absolute value of indoor air is set before starting operation at the time of starting the system. It is determined whether the humidity and the absolute humidity of the indoor air are equal to or less than a predetermined absolute humidity difference. If the target absolute humidity of the indoor air and the absolute humidity of the indoor air are equal to or less than the predetermined absolute humidity difference, Do not perform the operation at system startup.
- FIG. 1 is a schematic refrigerant circuit diagram of an air conditioning system according to a first embodiment of the present invention.
- FIG. 2 is a schematic refrigerant circuit diagram showing an operation during a dehumidifying operation in a full ventilation mode when only a latent heat load processing system is operated.
- FIG. 3 is a schematic refrigerant circuit diagram showing an operation during a dehumidifying operation in a full ventilation mode when only a latent heat load processing system is operated.
- FIG. 4 is a control flowchart when only a latent heat load processing system is operated.
- FIG. 5 is a graph showing the latent heat treatment capacity and the sensible heat treatment capacity in the adsorption heat exchanger, with the switching time interval between the adsorption operation and the regeneration operation as the horizontal axis.
- FIG. 6 is a schematic refrigerant circuit diagram showing an operation during a humidifying operation in a full ventilation mode when only the latent heat load processing system is operated.
- FIG. 7 is a schematic refrigerant circuit diagram showing an operation during a humidifying operation in a full ventilation mode when only the latent heat load processing system is operated.
- FIG. 8 is a schematic refrigerant circuit diagram showing an operation during a dehumidifying operation in a circulation mode when only the latent heat load processing system is operated.
- FIG. 9 is a schematic refrigerant circuit diagram showing an operation during a dehumidifying operation in a circulation mode when only the latent heat load processing system is operated.
- FIG. 10 is a schematic refrigerant circuit diagram showing an operation during a humidifying operation in a circulation mode when only the latent heat load processing system is operated.
- FIG. 11 is a schematic refrigerant circuit diagram showing an operation during a humidifying operation in a circulation mode when only the latent heat load processing system is operated.
- FIG. 12 is a schematic refrigerant circuit diagram showing an operation during a dehumidifying operation in an air supply mode when only the latent heat load processing system is operated.
- FIG. 13 is a schematic refrigerant circuit diagram showing an operation during a dehumidifying operation in an air supply mode when only the latent heat load processing system is operated.
- FIG. 14 is a schematic refrigerant circuit diagram showing an operation during a humidification operation in an air supply mode when only the latent heat load processing system is operated.
- FIG. 15 is a schematic refrigerant circuit diagram showing an operation during a humidification operation in an air supply mode when only the latent heat load processing system is operated.
- FIG. 16 is a schematic refrigerant circuit diagram showing an operation during a dehumidifying operation in an exhaust mode when only the latent heat load processing system is operated.
- FIG. 17 is a schematic refrigerant circuit diagram showing an operation in a dehumidifying operation in an exhaust mode when only the latent heat load processing system is operated.
- FIG. 18 is a schematic refrigerant circuit diagram showing an operation during a humidifying operation in an exhaust mode when only the latent heat load processing system is operated.
- FIG. 19 is a schematic refrigerant circuit diagram showing an operation during a humidifying operation in an exhaust mode when only the latent heat load processing system is operated.
- FIG. 20 is a schematic refrigerant circuit diagram showing an operation in a dehumidifying / cooling operation in the full ventilation mode in the air-conditioning system of the first embodiment.
- FIG. 21 is a schematic refrigerant circuit diagram illustrating an operation in a dehumidifying / cooling operation in the full ventilation mode in the air-conditioning system of the first embodiment.
- FIG. 22 is a control flow chart during normal operation in the air conditioning system of the first embodiment.
- FIG. 23 is a control flow chart during normal operation in the air conditioning system of the first embodiment.
- FIG. 24 is a schematic refrigerant circuit diagram showing an operation during a humidification and heating operation in a full ventilation mode in the air conditioning system of the first embodiment.
- FIG. 25 is a schematic refrigerant circuit diagram showing an operation in a humidification and heating operation in a full ventilation mode in the air conditioning system of the first embodiment.
- FIG. 26 is a schematic refrigerant circuit diagram showing the operation of the air-conditioning system of the first embodiment in the simultaneous operation of dehumidifying cooling and caro-humidifying heating in the full ventilation mode.
- FIG. 27 is a schematic refrigerant circuit diagram showing the operation of the air-conditioning system of the first embodiment in the simultaneous operation of dehumidifying cooling and caro-humidifying heating in the full ventilation mode.
- FIG. 28 is a schematic refrigerant circuit diagram showing an operation at the time of system startup in the air-conditioning system of the first embodiment.
- FIG. 29 is a schematic refrigerant circuit diagram illustrating an operation at the time of system startup in the air-conditioning system of the first embodiment.
- FIG. 30 is a schematic refrigerant circuit diagram of an air-conditioning system according to Modification Example 1 of the first embodiment.
- FIG. 31 is a schematic refrigerant circuit diagram of an air-conditioning system according to Modification 2 of the first embodiment.
- FIG. 32 is a schematic refrigerant circuit diagram showing an operation during a dehumidifying cooling operation in an all-ventilation mode in the air-conditioning system according to Modification 2 of the first embodiment.
- ⁇ 33] is a schematic refrigerant circuit diagram of an air conditioning system according to a second embodiment of the present invention.
- ⁇ 34] is a schematic refrigerant circuit diagram of an air conditioning system working in a modification of the second embodiment.
- FIG. 35 is a schematic refrigerant circuit diagram showing an operation during a dehumidifying cooling operation in a full ventilation mode in an air conditioning system according to a modification of the second embodiment.
- FIG. 36 is a schematic refrigerant circuit diagram of an air conditioning system according to a third embodiment of the present invention.
- FIG. 37 is a schematic refrigerant circuit diagram showing an operation during a drainless dehumidification / cooling operation in a full ventilation mode in the air conditioning system of the third embodiment.
- FIG. 38 is a schematic refrigerant circuit diagram showing an operation during a drainless dehumidifying / cooling operation in a full ventilation mode in the air-conditioning system of the third embodiment.
- FIG. 39 is a control flow chart during drainless dehumidification / cooling operation in the air-conditioning system of the third embodiment.
- FIG. 40 is a control flow diagram during drainless dehumidification / cooling operation in the air-conditioning system of the third embodiment.
- FIG. 41 is a schematic refrigerant circuit diagram showing the operation of the air-conditioning system of the third embodiment when the drainless system is started.
- FIG. 42 is a psychrometric chart showing the state of indoor air when the drainless system of the air conditioning system according to the third embodiment is started.
- FIG. 43 is a schematic refrigerant circuit diagram showing an operation of the air-conditioning system of the third embodiment when the drainless system is started.
- FIG. 44 is a schematic refrigerant circuit diagram showing the operation of the air-conditioning system of the third embodiment when the drainless system is started.
- FIG. 45 is a schematic refrigerant circuit diagram of an air-conditioning system according to Modification Example 1 of the third embodiment.
- FIG. 46 is a schematic refrigerant circuit diagram of an air-conditioning system according to Modification Example 2 of the third embodiment.
- FIG. 47 is a schematic refrigerant circuit diagram of an air-conditioning system according to Modification 3 of the third embodiment.
- FIG. 48 is a schematic refrigerant circuit diagram showing an operation in a dehumidifying / cooling operation in a full ventilation mode in an air-conditioning system according to Modification 3 of the third embodiment.
- FIG. 49 is a schematic refrigerant circuit diagram of an air-conditioning system according to a fourth embodiment of the present invention.
- FIG. 50 is a schematic refrigerant circuit diagram of an air-conditioning system according to Modification Example 1 of the fourth embodiment.
- FIG. 51 is a schematic refrigerant circuit diagram of an air-conditioning system according to Modification 2 of the fourth embodiment.
- FIG. 52 is a schematic refrigerant circuit diagram of an air-conditioning system according to Modification 3 of the fourth embodiment.
- FIG. 53 is a schematic refrigerant circuit diagram showing an operation in a dehumidifying cooling operation in an all-ventilation mode in an air-conditioning system according to Modification 3 of the fourth embodiment.
- FIG. 54 is a schematic refrigerant circuit diagram of an air conditioning system according to a fifth embodiment of the present invention.
- Latent heat circuit for latent heat system Ij (side refrigerant circuit for 1st Ij)
- FIG. 1 is a schematic refrigerant circuit diagram of an air conditioning system 1 according to a first embodiment of the present invention.
- the air conditioning system 1 is an air conditioning system that processes a latent heat load and a sensible heat load inside a building or the like by performing a vapor compression refrigeration cycle operation.
- the air conditioning system 1 is a so-called separate type multi-air conditioning system, and is mainly composed of a plurality of (two in the present embodiment) latent heat system cutouts 2 connected in parallel with each other. 3 and a plurality (two in this embodiment) of sensible heat system use units 4 and 5 connected in parallel with each other, a heat source unit 6, a latent heat system use units 2, 3 and a sensible heat system use unit.
- the heat source unit 6 functions as a common heat source for the latent heat system use units 2 and 3 and the sensible heat system use units 4 and 5.
- the number of the heat source unit 6 is only one. However, in the case where the number of the latent heat system use units 2 and 3 and the number of the sensible heat system use units 4 and 5 are multi Are connected in parallel.
- the latent heat system utilization units 2 and 3 are installed in the ceiling of a building or the like by being embedded or suspended, mounted on a wall, or in the space above the ceiling.
- the latent heat system use units 2 and 3 are connected to the heat source unit 6 via communication pipes 8 and 9, and form a refrigerant circuit 10 with the heat source unit 6.
- the latent heat system utilization units 2 and 3 mainly perform a latent heat load processing system (hereinafter referred to as an indoor latent heat load) by circulating a refrigerant in the refrigerant circuit 10 and performing a vapor compression refrigeration cycle operation.
- an indoor latent heat load a latent heat load processing system
- the configuration of the latent heat system utilization units 2 and 3 will be described. Since the latent heat system use unit 2 and the latent heat system use unit 3 have the same configuration, only the configuration of the latent heat system use unit 2 will be described here, and the configuration of the latent heat system use unit 3 will be described.
- the reference numerals in the thirties are used instead of the reference numerals in the twentys indicating the parts of the general use unit 2, and the description of each part is omitted.
- the latent heat system utilization unit 2 mainly forms a part of the refrigerant circuit 10, and supplies air.
- a latent heat system utilization side refrigerant circuit 10a capable of dehumidifying or humidifying is provided.
- the latent heat system use side refrigerant circuit 10a mainly includes a latent heat system use side four-way switching valve 21, a first adsorption heat exchanger 22, a second adsorption heat exchanger 23, and a latent heat system use side expansion valve 24. Is provided.
- the latent heat system utilization side four-way switching valve 21 is a valve for switching the flow path of the refrigerant flowing into the latent heat system utilization side refrigerant circuit 10a, and the first port 21a has a heat source unit through the discharge gas communication pipe 8.
- the second port 21b is connected to the suction side of the compression mechanism 61 of the heat source unit 6 via the suction gas communication pipe 9, and the second port 21b is connected to the discharge side of the compression mechanism 61 (described later).
- the third port 21c is connected to the gas side end of the first adsorption heat exchanger 22, and the fourth port 21d is connected to the gas side end of the second adsorption heat exchanger 23.
- the latent heat system utilization side four-way switching valve 21 connects the first port 21a and the third port 21c and also connects the second port 21b and the fourth port 21d (the first state, the latent heat system in FIG. 1). Connect the first port 21a to the fourth port 21d and connect the second port 21b to the third port 21c (see the second state, latent heat in FIG. 1). (See the broken line of the four-way switching valve 21 on the system use side).
- the first adsorption heat exchange and the second adsorption heat exchange are cross-fin type fin 'and' tube type heat exchanges composed of heat transfer tubes and many fins.
- the first adsorption heat exchanger 22 and the second adsorption heat exchanger 23 include a large number of aluminum fins formed in a rectangular plate shape and a copper heat transfer tube penetrating the fins. Have. Note that the first adsorption heat exchanger 22 and the second adsorption heat exchanger 23 are not limited to cross-fin type fin-and-tube heat exchangers, but may be other types of heat exchangers such as corrugated fins. It may be a heat exchange of the formula.
- the adsorbent is carried on the surfaces of the fins by dip molding (immersion molding).
- the method for supporting the adsorbent on the surfaces of the fins and the heat transfer tubes is not limited to dip molding, and the adsorbent may be supported on the surface by any method as long as the performance of the adsorbent is not impaired.
- the adsorbent include zeolite, silica gel, activated carbon, hydrophilic or water-absorbing organic high-molecular polymer materials, ion-exchange resin-based materials having carboxylic acid groups or sulfonic acid groups, and high heat-sensitive materials. Functional polymer materials such as molecules can be used.
- the first adsorption heat exchanger 22 and the second adsorption heat exchanger 23 function as a refrigerant evaporator that does not allow air to pass through the outside, so that the adsorbent carried on the surface of the first adsorption heat exchanger 22 Of water can be adsorbed.
- the first adsorption heat exchange and the second adsorption heat exchange 23 function as a refrigerant condenser while allowing air to pass therethrough to desorb water adsorbed by the adsorbent carried on the surface. Can be done.
- the latent heat system utilization side expansion valve 24 is an electric expansion valve connected between the liquid side end of the first adsorption heat exchanger 22 and the liquid side end of the second adsorption heat exchanger 23, and serves as a condenser.
- One of the functioning first adsorption heat exchange and second adsorption heat exchange can also reduce the pressure of the refrigerant sent to the other of the first adsorption heat exchanger 22 and the second adsorption heat exchanger 23 that functions as an evaporator. .
- the latent heat system utilization unit 2 has an external air intake port for inhaling outdoor air (hereinafter, referred to as outdoor air OA) into the unit, and the internal power of the unit also discharges air to the outside.
- outdoor air OA outdoor air
- indoor air RA indoor air
- supply air SA supply air
- the latent heat system utilization unit 2 supplies the outdoor air OA to the outside air intake loca into the unit, passes through the first or second adsorption heat exchange 22, 23, and then supplies air to the indoor air supply loca as air SA.
- Supply, or outdoor air OA is sucked into the outside air suction loca- tion unit and passed through the first or second adsorption heat exchange 22, 23, and then the exhaust port force is discharged outdoors as exhaust air EA or indoor air RA.
- the exhaust port force can be discharged outdoors as discharged air EA.
- the latent heat system utilization unit 2 is configured to detect the temperature of the indoor air RA drawn into the unit.
- RA intake temperature / humidity sensor 25 that detects the temperature and relative humidity
- OA intake temperature / humidity sensor 26 that detects the temperature and relative humidity of outdoor air OA sucked into the unit, and the supply supplied indoors from inside the unit
- the apparatus includes an SA supply temperature sensor 27 for detecting the temperature of the air SA, and a latent heat system use side control unit 28 for controlling the operation of each unit constituting the latent heat system use unit 2.
- the latent heat system use side control unit 28 has a microcomputer and a memory provided for controlling the latent heat system use unit 2, and includes a remote control 11 and a heat source side control unit 65 of the heat source unit 6 described later. Through this, it is possible to exchange input signals and the like for the target temperature and target humidity of the indoor air, and to exchange control signals and the like with the heat source unit 6.
- the sensible heat system utilization units 4 and 5 are installed in the ceiling of a building or the like by being embedded or suspended, mounted on a wall, or in the space above the ceiling.
- the sensible heat system utilization units 4 and 5 are connected to the heat source unit 6 via the communication pipes 7, 8, and 9 and the connection units 14 and 15, and constitute the refrigerant circuit 10 with the heat source unit 6.
- the sensible heat system use units 4 and 5 are sensible heat load processing systems that mainly process indoor sensible heat loads by circulating refrigerant in the refrigerant circuit 10 and performing a vapor compression refrigeration cycle operation. (In the following description, when the term “latent heat load processing system” is used, it refers to the combination of the latent heat system utilization units 2 and 3 and the heat source unit 6).
- the sensible heat system use unit 4 is installed in the same air conditioning space as the latent heat system use unit 2, and the sensible heat system use unit 5 is installed in the same air conditioning space as the latent heat system use unit 3.
- the latent heat system use unit 2 and the sensible heat system use unit 4 serve as a basis to process the latent heat load and the sensible heat load of a certain air-conditioned space, and the latent heat system use unit 3 and the sensible heat system use unit 5 And form a pair to process the latent heat load and sensible heat load of another air conditioning space!
- the configuration of the sensible heat system utilization units 4 and 5 will be described. Since the sensible heat system use unit 4 and the sensible heat system use unit 5 have the same configuration, only the configuration of the sensible heat system use unit 4 will be described here. Is replaced by a reference number in the 50's instead of a reference number in the 40's indicating each part of the sensible heat Description of the unit is omitted.
- the sensible heat system use unit 4 mainly forms a part of the refrigerant circuit 10, and is capable of dehumidifying or humidifying air by using the sensible heat system use side refrigerant circuit 10c (in the sensible heat system use unit 5, A sensible heat system utilization side refrigerant circuit 10d) is provided.
- the sensible heat system use side refrigerant circuit 10c mainly includes a sensible heat system use side expansion valve 41 and an air heat exchanger.
- the sensible heat system use side expansion valve 41 is an electric expansion valve connected to the liquid side of the air heat exchanger 42 for adjusting the flow rate of the refrigerant and the like.
- the air heat exchanger ⁇ is a cross-fin type fin 'and' tube type heat exchanger composed of a heat transfer tube and a number of fins, and heat exchange between the refrigerant and the indoor air RA. It is a device for replacement.
- the sensible heat system utilization unit 4 includes a blower fan (not shown) for sucking indoor air RA into the unit, exchanging heat, and then supplying indoor air RA as supply air SA. Therefore, it is possible to exchange heat between the indoor air RA and the refrigerant flowing through the air heat exchanger 322.
- the sensible heat system utilization unit 4 is provided with various sensors.
- a liquid-side temperature sensor 43 for detecting the temperature of the liquid refrigerant is provided on the liquid side of the air heat exchanger 42
- a gas-side temperature sensor for detecting the temperature of the gas refrigerant is provided on the gas side of the air heat exchanger 42. 44 are provided.
- the sensible heat system utilization unit 4 is provided with an RA intake temperature sensor 55 for detecting the temperature of the indoor air RA taken into the unit.
- the sensible heat system utilization unit 4 includes a sensible heat system utilization side control unit 48 for controlling the operation of each unit constituting the sensible heat system utilization unit 4.
- the sensible heat system use side control unit 48 has a microcomputer and a memory provided for controlling the sensible heat system use unit 4, and through the remote control 11, the target temperature and target temperature of indoor air. It is also possible to exchange humidity input signals and the like, and exchange control signals and the like with the heat source unit 6.
- the heat source unit 6 is installed on the roof of a building or the like, and is connected to the latent heat system use units 2 and 3 and the sensible heat
- the refrigerant circuit 10 is configured between the system utilization units 2 and 3 and the sensible heat system utilization units 4 and 5.
- the heat source unit 6 mainly forms a part of the refrigerant circuit 10 and includes a heat source side refrigerant circuit 10e.
- the heat-source-side refrigerant circuit 10e mainly includes a compression mechanism 61, a three-way switching valve 62, a heat-source-side heat exchanger 63, a heat-source-side expansion valve 64, and a receiver 68.
- the compression mechanism 61 is a positive displacement compressor whose operating capacity can be varied by inverter control.
- the compression mechanism 61 is a single compressor, but is not limited to this. Two or more compressors are connected in parallel according to the number of connected units and the like. There may be.
- the three-way switching valve 62 is connected to the discharge side of the compression mechanism 61 and the gas side of the heat source side heat exchange 63.
- the heat source side heat exchanger 63 functions as an evaporator (hereinafter referred to as the evaporating operation state)
- the first port 62a is connected to the discharge side of the compression mechanism 61
- the second port 62b is connected to the suction side of the compression mechanism 61 in the heat source side refrigerant circuit 10e.
- the third port 62c is connected to the gas end of the heat source side heat exchanger 63.
- the three-way switching valve 62 connects the first port 62a and the third port 62c (corresponding to the condensation operation state, see the solid line of the three-way switching valve 62 in FIG. 1), It is possible to perform switching by connecting the second port 62b and the third port 62c (corresponding to the evaporating operation state, see the broken line of the three-way switching valve 62 in FIG. 1).
- a discharge gas communication pipe 8 is connected between the discharge side of the compression mechanism 61 and the three-way switching valve 62.
- the high-pressure gas refrigerant compressed * discharged in the compression mechanism 61 can be supplied to the latent heat system use units 2 and 3 ⁇ sensible heat system use units 4 and 5 related to the switching operation of the three-way switching valve 62. Has become.
- the suction side of the compression mechanism 61 is connected to the suction gas communication pipe 9 through which the low-pressure gas refrigerant returning from the latent heat system use units 2 and 3 and the sensible heat system use units 4 and 5 flows.
- the heat source side heat exchange 63 is a cross-fin type fin-and-tube heat exchanger composed of heat transfer tubes and a large number of fins. A device for exchanging heat with a medium.
- the heat source unit 6 includes an outdoor fan (not shown) for taking in and sending out outdoor air into the unit, and performs heat exchange between outdoor air and a refrigerant flowing through heat exchange on the heat source side. It is possible to do.
- the heat-source-side expansion valve 64 is an electric motor capable of adjusting the flow rate of the refrigerant flowing between the heat-source-side heat exchanger 63 and the air heat exchangers 42 and 52 via the liquid communication pipe 7. An expansion valve.
- the heat source side expansion valve 64 is used in a substantially fully opened state when the heat source side heat exchanger 63 is in the condensing operation state, and is adjusted in the opening degree when the heat source side heat exchanger 63 is in the evaporating operation state to communicate with the liquid from the air heat exchangers 42 and 52. It is used to reduce the pressure of the refrigerant flowing into the heat source side heat exchanger 63 via the pipe 7.
- the receiver 68 is a container for temporarily storing the refrigerant flowing between the heat source side heat exchange and the air heat exchange 42, 52.
- the receiver 68 is connected between the heat source side expansion valve 64 and the liquid communication pipe 7.
- the heat source unit 6 is provided with various sensors. Specifically, the heat source unit 6 comprises a suction pressure sensor 66 for detecting the suction pressure of the compression mechanism 61, a discharge pressure sensor 67 for detecting the discharge pressure of the compression mechanism 61, and the heat source unit 6.
- a heat source side control unit 65 for controlling the operation of each unit is provided.
- the heat source side control unit 65 has a microcomputer and a memory provided for controlling the heat source unit 6, and the latent heat system use side control units 28 and 38 of the latent heat system use units 2 and 3 are provided. Control signals can be transmitted between the sensible heat system use side control units 48 and 58 of the heat system use units 4 and 5. Further, the heat source side control section 65 can exchange control signals and the like with the heat source side control section 65.
- the high-pressure gas refrigerant compressed and discharged by the compression mechanism 61 of the heat source unit 6 is adsorbed by the latent heat system utilization units 2 and 3 via the discharge gas communication pipe 8.
- the suction gas communication pipe 9 To the heat exchangers 22, 23, 32, and 33, and from the adsorption heat exchangers 22, 23, 32, and 33 of the latent heat system utilization units 2 and 3 via the suction gas communication pipe 9 to the suction side of the compression mechanism 61 of the heat source unit 6. Can be returned to. For this reason, indoor dehumidification or humidification can be performed regardless of the operation of the sensible heat system utilization units 4 and 5.
- connection units 14 and 15 mainly include cooling / heating switching valves 71 and 81 and connection unit control units 72 and 82 that control the operation of each unit constituting the connection units 14 and 15.
- the cooling / heating switching valves 71 and 81 connect the gas side of the air heat exchange 42 and 52 of the sensible heat system use units 4 and 5 to the intake gas communication pipe 9 when the sensible heat system use units 4 and 5 perform cooling operation.
- the first port 71a, 81a is a valve that functions as a switching mechanism that switches between a state in which it is connected to the discharge gas communication pipe 8 (hereinafter, referred to as a heating operation state).
- the second port 71b, 8lb is connected to the suction gas communication pipe 9, and the third port 71c, 81c is connected to the discharge gas communication pipe 8.
- the cooling / heating switching valves 71, 81 connect the first ports 71a, 81a to the second ports 71b, 81b (corresponding to the cooling operation state; the cooling / heating switching valves 71, 81 in FIG. 1). (See the solid lines) or connect the first port 71a, 81a to the third port 71c, 81c (corresponding to the heating operation state, see the broken line of the cooling / heating switching valves 71, 81 in Fig. 1).
- the connection unit control units 72 and 82 include a microcomputer and a memory provided for controlling the connection units 14 and 15, and the sensible heat system use side control units of the sensible heat system use units 4 and 5. Control signals can be transmitted between 48 and 58.
- the sensible heat system utilization units 4 and 5 can perform so-called simultaneous cooling and heating operation, such as heating the sensible heat system utilization unit 5 while cooling the sensible heat system utilization unit 4. It is possible.
- indoor latent heat loads can be processed by the latent heat load processing system
- indoor sensible heat loads can be mainly processed by the sensible heat load processing system.
- Air-conditioning system 1 operates as follows by independent operation of only the latent heat load treatment system. Various dehumidifying operations and humidifying operations can be performed.
- FIGS. 2, 3, and 4 are schematic refrigerant circuit diagrams showing the operation during the dehumidifying operation in the full ventilation mode when only the latent heat load processing system of the air conditioning system 1 is operated.
- FIG. 4 is a control flow chart when only the latent heat load processing system of the air conditioning system 1 is operated.
- the first adsorption heat exchanger 22 becomes a condenser and the second adsorption heat exchanger 23 becomes an evaporator.
- the second operation in which the second adsorption heat exchange becomes a condenser and the first adsorption heat exchange becomes an evaporator is alternately repeated.
- the first operation in which the first adsorption heat exchange becomes a condenser and the second adsorption heat exchange 33 becomes an evaporator and the second operation in which the second adsorption heat exchange 33 becomes a condenser.
- the second operation in which 1 adsorption heat exchange becomes an evaporator is alternately repeated.
- the regeneration operation of the first adsorption heat exchangers 22 and 32 and the adsorption operation of the second adsorption heat exchangers 23 and 33 are performed in parallel.
- the four-way switching valves 21 and 31 using the latent heat system are in the first state (see the solid lines of the four-way switching valves 21 and 31 using the latent heat system in FIG. 2). Is set to In this state, the high-pressure gas refrigerant discharged from the compression mechanism 61 flows into the first adsorption heat exchanges 22 and 32 through the discharge gas communication pipe 8 and the latent heat system utilization side four-way switching valves 21 and 31, and It condenses while passing through adsorption heat exchange 22,32.
- the condensed refrigerant is decompressed by the latent heat system use side expansion valves 24 and 34, and then evaporates while passing through the second adsorption heat exchangers 23 and 33, and the latent heat system use side expansion valves 24 and 33.
- the refrigerant is again sucked into the compression mechanism 61 through the passage switching valves 21 and 31 and the suction gas communication pipe 9 (see the arrow attached to the refrigerant circuit 10 in FIG. 2).
- the sensible heat system use side expansion valves 41 and 51 of the sensible heat system use units 4 and 5 are closed, the refrigerant does not flow through the sensible heat system use units 4 and 5! T! /
- the first adsorption heat exchangers 22 and 32 the heat of the adsorbent heated by the condensation of the refrigerant is desorbed, and the desorbed water is discharged into the indoor air sucked by the indoor air. Granted to RA.
- the moisture desorbed from the first adsorption heat exchangers 22, 32 is discharged to the outside as exhaust air EA through the exhaust port along with the indoor air RA.
- the moisture in the outdoor air OA is adsorbed by the adsorbent to dehumidify the outdoor air OA, and the heat of adsorption generated at that time is absorbed by the refrigerant to evaporate the refrigerant.
- the outdoor air OA dehumidified by the second adsorption heat exchangers 23 and 33 is supplied into the house as supply air SA through the air supply port (see FIG. 2 for adsorption heat exchanges 22, 23, 32 and 33). See arrows on both sides
- the adsorption operation for the first adsorption heat exchangers 22 and 32 and the regeneration operation for the second adsorption heat exchangers 23 and 33 are performed in parallel.
- the latent heat system use side four-way switching valves 21 and 31 are in the second state (see the broken line of the latent heat system use side four-way switching valves 21 and 31 in FIG. 3).
- the high-pressure gas refrigerant discharged from the compression mechanism 61 flows into the second adsorption heat exchangers 23 and 33 through the discharge gas communication pipe 8 and the latent heat system use side four-way switching valves 21 and 31, and 2 It condenses while passing through the adsorption heat exchangers 23 and 33. Then, the condensed refrigerant is decompressed by the latent heat system use side expansion valves 24 and 34, and then evaporates while passing through the first adsorption heat exchangers 22 and 32, and the latent heat system use side four-way switching valve. The refrigerant is sucked again into the compression mechanism 61 through the intake gas communication pipe 9 (see arrows indicated by the refrigerant circuit 10 in FIG. 3).
- the second adsorption heat exchanges 23 and 33 the heat of the adsorbent heated by the condensation of the refrigerant is desorbed, and the desorbed water is discharged into the indoor air sucked by the indoor air. Granted to RA.
- the moisture desorbed from the second adsorption heat exchangers 23 and 33 is discharged to the outside as exhaust air EA through the exhaust port along with the indoor air RA.
- the moisture in the outdoor air OA is adsorbed by the adsorbent and the outdoor air OA is dehumidified.
- the heat of adsorption generated at that time is absorbed by the refrigerant, and the refrigerant evaporates.
- the outdoor air OA dehumidified by the first adsorption heat exchangers 22 and 32 is supplied into the house through the air supply port as supply air SA (see FIG. 3 for adsorption heat exchanges 22, 23, 32, and 33). See arrows on both sides
- the latent temperature system use side control units 28 and 38 of the latent heat system use units 2 and 3 provide the target temperature value and the target temperature, respectively.
- the temperature value and relative humidity value of the indoor air sucked into the unit detected by the RA intake temperature and humidity sensors 25 and 35, and the OA intake temperature and humidity sensors 26 and 36 The temperature value and the relative humidity value of the outdoor air drawn into the unit are input.
- step S1 the latent heat system utilization side control units 28 and 38 calculate the target value of the entguri or the target value of the absolute humidity from the target temperature value and the target relative humidity value of the indoor air, and Temperature / humidity sensor Temperature values and relative humidity values detected by sensors 25 and 35 Indoor force Calculates the current value of entguri or the current absolute humidity of the air taken into the unit, and calculates the difference between the two values (hereinafter Required latent heat capacity value Ah).
- the required latent heat capacity value Ah is the difference between the target value of the indoor air enthalpy or the absolute humidity target value and the current indoor air enthalpy value or the absolute humidity value, as described above. This corresponds to a latent heat load that must be processed in the air conditioning system 1.
- the value of the required latent heat capacity value Ah is converted into a capacity UP signal K1 for informing the heat source side control section 65 whether or not it is necessary to increase the processing capacity of the latent heat system use units 2 and 3.
- a capacity UP signal K1 for informing the heat source side control section 65 whether or not it is necessary to increase the processing capacity of the latent heat system use units 2 and 3.
- the capacity-up signal K1 Must be set to 0 and the absolute value of Ah must be greater than the specified value. If the absolute value of Ah is greater in the direction (i.e., in the case of dehumidifying operation!
- the capacity UP signal K1 should be set to "A” and the absolute value of Ah should be lower than the specified value. (That is, when the humidity value of the indoor air is lower than the target humidity value in the dehumidifying operation and the processing capacity needs to be reduced), the capability UP signal K1 is set to “B”.
- the heat source side control unit 65 uses the latent heat system use unit 2, 3 to which the latent heat system use unit 2 or 3 has also transmitted the power, to increase the target condensing temperature using the capacity UP signal K1.
- the value TcSl and the target evaporation temperature value TeSl are calculated.
- the target condensing temperature value TcSl is calculated by adding the capacity up signal K1 of the latent heat system utilization units 2 and 3 to the current target condensing temperature value.
- the target evaporation temperature value TeSl is calculated by subtracting the capacity increase signal K1 of the latent heat system use units 2 and 3 from the current target evaporation temperature value.
- the target condensing temperature value TcSl increases and the target evaporation temperature value TeSl decreases.
- a system condensation temperature value Tc1 and a system evaporation temperature value Te1 which are values corresponding to the measured values of the condensation temperature and the evaporation temperature of the entire air conditioning system 1, are calculated.
- the system condensation temperature value Tel and the system evaporation temperature value Tel are the suction pressure value of the compression mechanism 61 detected by the suction pressure sensor 66 and the discharge pressure value of the compression mechanism 61 detected by the discharge pressure sensor 67, respectively.
- the first adsorption heat exchangers 22 and 32 and the second adsorption heat exchangers 23 and 33 adsorb moisture in the air and remove the adsorbed moisture into the air by these adsorption and regeneration operations. Cooling or heating the passing air only by the separation process (hereinafter referred to as latent heat treatment) To change the temperature (hereinafter referred to as sensible heat treatment).
- FIG. 5 shows a graph in which the latent heat treatment capacity and the sensible heat treatment capacity obtained in the adsorption heat exchanger are displayed on the abscissa with the switching time interval between the first operation and the second operation, that is, the adsorption operation and the regeneration operation. According to this, when the switching time interval is shortened (time C in Fig.
- the latent heat priority mode the latent heat treatment, that is, the process of adsorbing or desorbing moisture in the air is performed with priority.
- the switching time interval is increased (time D in Fig. 5, sensible heat priority mode)
- the sensible heat treatment that is, the process of changing the temperature by cooling or heating the air, is performed with priority.
- the adsorbent when air is brought into contact with the first adsorption heat exchangers 22 and 32 and the second adsorption heat exchangers 23 and 33 which function as condensers, initially, the adsorbent is mainly heated by heat treatment of the adsorbent provided on the surface.
- the water adsorbed on the adsorbent is desorbed into the air, but when the water adsorbed on the adsorbent is almost desorbed, the power that mainly heats the air thereafter.
- the ratio of the sensible heat treatment capability to the latent heat treatment capability (hereinafter referred to as the sensible heat treatment capability ratio) can be changed by changing the switching time interval in accordance with a command from the latent heat system utilization side control units 28 and 38. You can do it.
- the switching time interval is set to time C, ie, the latent heat priority mode, mainly for performing the latent heat treatment.
- the outdoor air is dehumidified and the cooling is performed by the sensible heat treatment capacity obtained according to the switching time interval. Cooling operation to supply indoors.
- FIG. 4 is a schematic refrigerant circuit diagram illustrating an operation during a humidifying operation in an air mode. Note that the system control performed on the air conditioning system 1 is the same as the dehumidifying operation in the all-ventilation mode described above, and a description thereof will be omitted.
- the first adsorption heat exchanger 22 becomes a condenser and the second adsorption heat exchanger 23 becomes an evaporator.
- the second operation in which the second adsorption heat exchange becomes a condenser and the first adsorption heat exchange becomes an evaporator is alternately repeated.
- the second operation in which 1 adsorption heat exchange becomes an evaporator is alternately repeated.
- the flow of the refrigerant in the refrigerant circuit 10 during the first operation and the second operation is the same as the dehumidifying operation in the above-described full ventilation mode, the description is omitted, and the flow during the first operation and the second operation is omitted.
- the first adsorption heat exchangers 22, 32 water is desorbed from the heated adsorbent by the condensation of the refrigerant, and the desorbed water is sucked from the outside air suction port It is given to the outdoor air OA that has been created.
- the moisture desorbed from the first adsorption heat exchangers 22 and 32 is supplied indoors as supply air SA through an air supply port along with outdoor air OA.
- the moisture in the indoor air RA is adsorbed by the adsorbent to dehumidify the indoor air RA, and the heat of adsorption generated at that time is absorbed by the refrigerant to evaporate the refrigerant.
- the indoor air RA dehumidified by the second adsorption heat exchangers 23 and 33 is discharged outside as exhaust air EA through the exhaust port (both sides of the adsorption heat exchanges 22, 23, 32 and 33 in Fig. 6). See arrow attached to
- the second adsorption heat exchange 23, 33 moisture is desorbed from the heated adsorbent due to the condensation of the refrigerant, and the desorbed moisture is converted into outdoor air OA sucked from the outside air inlet. Granted.
- the water desorbed from the second adsorption heat exchangers 23 and 33 is supplied indoors as supply air SA through the air supply port together with the outdoor air OA.
- the moisture in the indoor air RA is adsorbed by the adsorbent to dehumidify the indoor air RA, and the heat of adsorption generated at that time is absorbed by the refrigerant to evaporate the refrigerant.
- the indoor air RA dehumidified in the exchanges 22 and 32 is exhausted outside as exhaust air EA through the exhaust port (arrows on both sides of the adsorption heat exchanges 22, 23, 32, and 33 in Fig. 7).
- the first adsorption heat exchangers 22, 32 and the second adsorption heat exchangers 23, 33 also perform sensible heat treatment, which is not only latent heat treatment, as in the above-described dehumidification operation in the full ventilation mode. .
- the outdoor air is humidified, and the heating is performed by the sensible heat treatment capacity obtained according to the switching time interval. Humidification operation to supply indoors.
- the dehumidifying operation and the humidifying operation in the circulation mode will be described.
- the indoor air RA is sucked into the unit through the indoor air intake port and supplied indoors as supply air SA through the air supply port.
- outdoor air OA is sucked into the unit through the outside air intake port, and is discharged outside as exhaust air EA through the exhaust port.
- FIGS. 8 and 9 are schematic refrigerant circuit diagrams illustrating the operation during the dehumidifying operation of the circulation mode in only the latent heat load processing system of the air conditioning system 1.
- FIG. The system control performed in the air conditioning system 1 is the same as the above-described dehumidifying operation in the full ventilation mode, and thus the description is omitted.
- the first adsorption heat exchanger 22 becomes a condenser and the second adsorption heat exchanger 23 becomes an evaporator.
- the second operation in which the second adsorption heat exchange becomes a condenser and the first adsorption heat exchange becomes an evaporator is alternately repeated.
- the first adsorption heat exchangers 22, 32 water is desorbed from the heated adsorbent due to the condensation of the refrigerant, and the desorbed water is sucked from the outside air inlet through the outdoor air.
- OA is given to OA.
- the moisture desorbed from the first adsorption heat exchangers 22, 32 is discharged to the outside as exhaust air EA through the exhaust port together with the outdoor air OA.
- the second adsorption heat exchanges 23 and 33 the moisture in the indoor air RA is adsorbed by the adsorbent to dehumidify the indoor air RA, and the heat of adsorption generated at that time is absorbed by the refrigerant to evaporate the refrigerant.
- the indoor air RA dehumidified by the second adsorption heat exchange 23, 33 is supplied into the house through the air supply port as the supply air SA (see FIG. 8, adsorption heat exchange 22, 23, 32, 33). See arrows on both sides
- the second adsorption heat exchange 23, 33 moisture is desorbed from the heated adsorbent due to the condensation of the refrigerant, and the desorbed moisture is converted into outdoor air OA sucked from the outside air inlet. Granted.
- the moisture desorbed from the second adsorption heat exchangers 23 and 33 is discharged to the outside as exhaust air EA through the exhaust port along with the outdoor air OA.
- the moisture in the indoor air RA is adsorbed by the adsorbent to dehumidify the indoor air, and the heat of adsorption generated at that time is absorbed by the refrigerant to evaporate the refrigerant.
- the indoor air RA dehumidified by the first adsorption heat exchanges 22 and 32 is supplied into the house as supply air SA through the air supply port (see the adsorption heat exchanges 22, 23, 32 and 33 in FIG. 9). See arrows on both sides
- the first adsorption heat exchangers 22, 32 and the second adsorption heat exchangers 23, 33 also perform sensible heat treatment, not only latent heat treatment.
- the indoor air in the dehumidifying operation in the circulation mode of only the latent heat load processing system, the indoor air is dehumidified, and the indoor air is cooled by the sensible heat treatment capacity obtained according to the switching time interval.
- Dehumidification operation can be performed for supply to
- FIG. 4 is a schematic refrigerant circuit diagram illustrating an operation during a dehumidifying operation in a ring mode. Note that the system control performed on the air conditioning system 1 is the same as the dehumidifying operation in the all-ventilation mode described above, and a description thereof will be omitted.
- the first adsorption heat exchanger 22 becomes a condenser and the second adsorption heat exchanger 23
- the first operation in which the first heat exchange becomes an evaporator and the second operation in which the second heat exchange becomes a condenser and the first heat exchange becomes an evaporator are alternately repeated.
- the second operation in which the first adsorption heat exchange becomes the evaporator is alternately repeated.
- the description is omitted, and the flow during the first operation and the second operation is omitted. Only air flow is described.
- the heat of the adsorbent heated by the condensation of the refrigerant desorbs the moisture, and the desorbed water is given to the indoor air RA that has been sucked into the inside air suction loca. Is done.
- the moisture desorbed from the first adsorption heat exchangers 22, 32 is supplied indoors as supply air SA through the air supply port together with the indoor air RA.
- the moisture in the outdoor air OA is adsorbed by the adsorbent to dehumidify the outdoor air OA, and the heat of adsorption generated at that time is absorbed by the refrigerant to evaporate the refrigerant.
- the outdoor air OA dehumidified by the second adsorption heat exchangers 23 and 33 is discharged outside through the exhaust port as exhaust air EA (both sides of the adsorption heat exchanges 22, 23, 32 and 33 in Fig. 10). (See arrow attached to).
- the heat of the adsorbent heated by the condensation of the refrigerant is desorbed, and the desorbed water is discharged into the indoor air sucked by the indoor air. Granted to RA.
- the water desorbed from the second adsorption heat exchangers 23 and 33 is supplied indoors as supply air SA through the air supply port together with the indoor air RA.
- the moisture in the outdoor air OA is adsorbed by the adsorbent to dehumidify the outdoor air OA, and the heat of adsorption generated at that time is absorbed by the refrigerant to evaporate the refrigerant.
- the first adsorption heat exchangers 22 and 32 and the second adsorption heat exchangers 23 and 33 also perform sensible heat treatment, not only latent heat treatment, as in the above-described dehumidifying operation in the full ventilation mode.
- the indoor air in the humidifying operation in the circulation mode of only the latent heat load processing system, the indoor air is humidified, and the heating is performed by the sensible heat treatment capacity obtained according to the switching time interval. Humidification and heating operation to supply indoors can be performed.
- the dehumidifying operation and the humidifying operation in the air supply mode will be described.
- the air supply mode when the air supply and exhaust fans of the latent heat system utilization units 2 and 3 are operated, outdoor air OA is sucked into the unit through the external air intake and supplied indoors as supply air SA through the air supply. Then, the operation is performed in which the outdoor air OA is sucked into the unit through the outside air intake port and is discharged outside as the exhaust air EA through the exhaust port.
- FIG. 12 and FIG. 13 are schematic refrigerant circuit diagrams showing the operation during the dehumidifying operation in the air supply mode in only the latent heat load processing system of the air conditioning system 1. Note that the system control performed in the air conditioning system 1 is the same as the dehumidifying operation in the all-ventilation mode described above, and a description thereof will be omitted.
- the first adsorption heat exchanger 22 becomes a condenser and the second adsorption heat exchanger 23
- the first operation in which the first heat exchange becomes an evaporator and the second operation in which the second heat exchange becomes a condenser and the first heat exchange becomes an evaporator are alternately repeated.
- the second operation in which the first adsorption heat exchange becomes the evaporator is alternately repeated.
- the flow of the refrigerant in the refrigerant circuit 10 during the first operation and the second operation is the same as the dehumidifying operation in the above-described full ventilation mode. Therefore, the description is omitted, and only the air flow during the first operation and the second operation will be described.
- the first adsorption heat exchangers 22 and 32 water is desorbed from the heated adsorbent by the condensation of the refrigerant, and the desorbed water is discharged to the outdoor air OA sucked from the outside air inlet. Granted.
- the moisture desorbed from the first adsorption heat exchangers 22, 32 is discharged to the outside as exhaust air EA through the exhaust port together with the outdoor air OA.
- the moisture in the outdoor air OA is adsorbed by the adsorbent to dehumidify the outdoor air OA, and the heat of adsorption generated at that time is absorbed by the refrigerant to evaporate the refrigerant.
- the outdoor air OA dehumidified by the second adsorption heat exchangers 23, 33 is supplied indoors as supply air SA through the air supply port (see FIG. 12, adsorption heat exchange 22, 23, 32, 33). See arrows on both sides).
- the second adsorption heat exchanges 23 and 33 moisture is desorbed from the heated adsorbent due to the condensation of the refrigerant, and the desorbed moisture is sucked from the outside air inlet through the outdoor air.
- OA is given to OA.
- the moisture desorbed from the second adsorption heat exchangers 23 and 33 is discharged to the outside as exhaust air EA through the exhaust port together with the outdoor air OA.
- the moisture in the outdoor air OA is adsorbed by the adsorbent to dehumidify the outdoor air OA, and the heat of adsorption generated at that time is absorbed by the refrigerant to evaporate the refrigerant.
- the outdoor air OA dehumidified by the first adsorption heat exchangers 22, 32 is supplied indoors as supply air SA through the air supply port (see FIG. 13, adsorption heat exchange 22, 23, 32, 33). See arrows on both sides).
- first adsorption heat exchangers 22, 32 and the second adsorption heat exchangers 23, 33 also perform sensible heat treatment, not only latent heat treatment.
- the outdoor air is dehumidified, and the cooling is performed by the sensible heat treatment capacity obtained according to the switching time interval.
- dehumidification operation to supply indoors.
- FIG. 4 is a schematic refrigerant circuit diagram illustrating an operation during a humidifying operation in an air mode. Note that the system control performed on the air conditioning system 1 is the same as the dehumidifying operation in the all-ventilation mode described above, and a description thereof will be omitted.
- the first adsorption heat exchanger 22 becomes a condenser and the second adsorption heat exchanger 23 becomes an evaporator.
- the second operation in which the second adsorption heat exchange becomes a condenser and the first adsorption heat exchange becomes an evaporator is alternately repeated.
- the second operation in which the first adsorption heat exchange becomes the evaporator is alternately repeated.
- the description is omitted, and the flow during the first operation and the second operation is omitted. Only air flow is described.
- the first adsorption heat exchangers 22 and 32 water is desorbed from the heated adsorbent by the condensation of the refrigerant, and the desorbed water is discharged to the outdoor air OA sucked from the outside air inlet. Granted.
- the moisture desorbed from the first adsorption heat exchangers 22 and 32 is supplied indoors as supply air SA through an air supply port along with outdoor air OA.
- the moisture in the outdoor air OA is adsorbed by the adsorbent to dehumidify the outdoor air, and the heat of adsorption generated at that time is absorbed by the refrigerant to evaporate the refrigerant.
- the outdoor air OA dehumidified by the second adsorption heat exchangers 23 and 33 is discharged outside as exhaust air EA through the exhaust port (both sides of the adsorption heat exchanges 22, 23, 32 and 33 in Fig. 14). (See arrow attached to).
- the second adsorption heat exchange 23, 33 moisture is desorbed from the heated adsorbent due to the condensation of the refrigerant, and the desorbed moisture is converted into outdoor air OA sucked from the outside air inlet. Granted.
- the water desorbed from the second adsorption heat exchangers 23 and 33 is supplied indoors as supply air SA through the air supply port together with the outdoor air OA.
- the moisture in the outdoor air OA is adsorbed by the adsorbent to dehumidify the outdoor air OA, and the heat of adsorption generated at that time is absorbed by the refrigerant to evaporate the refrigerant.
- the first adsorption The outdoor air OA dehumidified by the heat exchangers 22 and 32 is exhausted to the outside as exhaust air EA through the exhaust port. reference).
- the first adsorption heat exchangers 22, 32 and the second adsorption heat exchangers 23, 33 perform not only latent heat but also sensible heat.
- the outdoor air in the humidifying operation in the air supply mode of only the latent heat load processing system, the outdoor air is humidified, and heating is performed by the sensible heat treatment capacity obtained according to the switching time interval. Humidification operation to supply indoors can be performed.
- the dehumidifying operation and the humidifying operation in the exhaust mode will be described.
- the indoor air RA is sucked into the unit through the indoor air intake port and supplied indoors as supply air SA through the air supply port.
- the indoor air RA is sucked into the unit through the inside air intake port, and is discharged outside as the exhaust air EA through the exhaust port.
- FIGS. 16 and 17 are schematic refrigerant circuit diagrams showing the operation during the dehumidifying operation in the exhaust mode in only the latent heat load processing system of the air conditioning system 1. Note that the system control performed in the air conditioning system 1 is the same as the dehumidifying operation in the all-ventilation mode described above, and a description thereof will be omitted.
- the first adsorption heat exchanger 22 becomes a condenser and the second adsorption heat exchanger 23 becomes an evaporator.
- the second operation in which the second adsorption heat exchange becomes a condenser and the first adsorption heat exchange becomes an evaporator is alternately repeated.
- the second operation in which the first adsorption heat exchange becomes the evaporator is alternately repeated.
- the flow of the refrigerant in the refrigerant circuit 10 during the first operation and the second operation is the same as the dehumidifying operation in the above-described full ventilation mode. Therefore, the description is omitted, and only the air flow during the first operation and the second operation will be described.
- the first adsorption heat exchangers 22 and 32 the heat of the adsorbent heated by condensation of the refrigerant is desorbed, and the desorbed water is discharged into the indoor air sucked by the indoor air. Granted to RA.
- the moisture desorbed from the first adsorption heat exchangers 22, 32 is discharged to the outside as exhaust air EA through the exhaust port along with the indoor air RA.
- the moisture in the indoor air RA is adsorbed by the adsorbent to dehumidify the indoor air RA, and the heat of adsorption generated at that time is absorbed by the refrigerant to evaporate the refrigerant.
- the indoor air RA dehumidified by the second adsorption heat exchange 23, 33 is supplied to the house through the air supply port as the supply air SA (see FIG. 16, adsorption heat exchange 22, 23, 32, 33). See arrows on both sides).
- the heat of the adsorbent heated by the condensation of the refrigerant desorbs moisture, and the desorbed moisture is given to the inhaled indoor air RA that has been sucked into the inside air. Is done.
- the moisture desorbed from the second adsorption heat exchangers 23 and 33 is exhausted to the outside as exhaust air EA through the exhaust port along with the indoor air RA.
- the moisture in the indoor air RA is adsorbed by the adsorbent to dehumidify the indoor air RA, and the heat of adsorption generated at that time is absorbed by the refrigerant to evaporate the refrigerant.
- the indoor air RA dehumidified by the first adsorption heat exchanges 22 and 32 is supplied to the house as supply air SA through the air supply port (see FIG. 17). See arrows on both sides).
- the first adsorption heat exchangers 22, 32 and the second adsorption heat exchangers 23, 33 perform not only latent heat but also sensible heat.
- FIG. 4 is a schematic refrigerant circuit diagram illustrating an operation during a humidifying operation in an air mode. Note that the system control performed on the air conditioning system 1 is the same as the dehumidifying operation in the all-ventilation mode described above, and a description thereof will be omitted.
- the first adsorption heat exchanger 22 becomes a condenser and the second adsorption heat exchanger 23
- the first operation in which the first heat exchange becomes an evaporator and the second operation in which the second heat exchange becomes a condenser and the first heat exchange becomes an evaporator are alternately repeated.
- the second operation in which the first adsorption heat exchange becomes the evaporator is alternately repeated.
- the description is omitted, and the flow during the first operation and the second operation is omitted. Only air flow is described.
- the heat of the adsorbent heated by the condensation of the refrigerant desorbs the moisture, and the desorbed water is given to the indoor air RA that has been sucked into the inside air suction loca. Is done.
- the moisture desorbed from the first adsorption heat exchangers 22, 32 is supplied indoors as supply air SA through the air supply port together with the indoor air RA.
- the moisture in the indoor air RA is adsorbed by the adsorbent to dehumidify the indoor air RA, and the heat of adsorption generated at that time is absorbed by the refrigerant to evaporate the refrigerant.
- the indoor air RA dehumidified by the second adsorption heat exchangers 23 and 33 is discharged outside through the exhaust port as exhaust air EA (see both sides of the adsorption heat exchanges 22, 23, 32, and 33 in Fig. 18). (See arrow attached to).
- the second adsorption heat exchanges 23 and 33 the heat of the adsorbent heated by the condensation of the refrigerant is desorbed, and the desorbed water is discharged into the indoor air sucked by the indoor air. Granted to RA.
- the moisture desorbed from the second adsorption heat exchangers 23 and 33 is supplied indoors as supply air SA through the air supply port along with the indoor air SA.
- the moisture in the indoor air RA is adsorbed by the adsorbent to dehumidify the indoor air RA, and the heat of adsorption generated at that time is absorbed by the refrigerant to evaporate the refrigerant.
- the indoor air RA dehumidified in the exchanges 22 and 32 is exhausted to the outside as exhaust air EA through the exhaust port (see arrows on both sides of the adsorption heat exchanges 22, 23, 32, and 33 in Fig. 19). See).
- first adsorption heat exchangers 22, 32 and the second adsorption heat exchangers 23, 33 also perform sensible heat treatment, not only latent heat treatment.
- the indoor air is humidified, and the heating is performed by the sensible heat treatment capability obtained according to the switching time interval. Humidification operation to supply indoors can be performed.
- the air conditioning system 1 mainly processes indoor latent heat loads with the latent heat load processing system (that is, the latent heat system use units 2 and 3), and mainly processes indoor sensible heat loads using the sensible heat load treatment system (that is, the sensible heat system use unit). It can be processed in units 4 and 5).
- the latent heat load processing system that is, the latent heat system use units 2 and 3
- the sensible heat load treatment system that is, the sensible heat system use unit
- FIG. 20 and FIG. 21 are schematic refrigerant circuit diagrams illustrating the operation of the air conditioning system 1 during the dehumidifying / cooling operation in the full ventilation mode.
- FIG. 22 is a control flowchart of the air conditioning system 1 during normal operation.
- FIG. 23 is a control flow diagram during normal operation in the air conditioning system 1 (when changing the switching time interval of the adsorption heat exchangers 22, 23, 32, and 33).
- the pair of the latent heat system use unit 2 and the sensible heat system use unit 4 and the pair of the latent heat system use unit 3 and the sensible heat system use unit 5 have the same control flow.
- the control flow of the pair of the latent heat system use unit 3 and the sensible heat system use unit 5 is not shown.
- the operation of the latent heat load processing system of the air conditioning system 1 will be described.
- the first adsorption heat exchange becomes a condenser and the second adsorption heat exchanger 23 evaporates, as in the case of the above-described operation of the latent heat load processing system alone.
- the first operation as a heat exchanger and the second operation as the second adsorption heat exchanger 23 as a condenser and the first adsorption heat exchange as an evaporator are alternately repeated.
- the latent heat system utilization unit 3 the first operation in which the first adsorption heat exchange 32 becomes a condenser and the second adsorption heat exchanger 33 becomes an evaporator, and the second adsorption heat exchanger 33 becomes a condenser
- the second operation in which the first adsorption heat exchange becomes the evaporator is alternately repeated.
- the operation of the two latent heat system utilization units 2 and 3 will be described together.
- the regeneration operation of the first adsorption heat exchangers 22 and 32 and the adsorption operation of the second adsorption heat exchangers 23 and 33 are performed in parallel.
- the four-way switching valves 21 and 31 using the latent heat system are in the first state (see the solid lines of the four-way switching valves 21 and 31 using the latent heat system in FIG. 20).
- the high-pressure gas refrigerant discharged from the compression mechanism 61 flows into the first adsorption heat exchanges 22 and 32 through the discharge gas communication pipe 8 and the latent heat system utilization side four-way switching valves 21 and 31, and It condenses while passing through adsorption heat exchange 22,32. Then, the condensed refrigerant is decompressed by the latent heat system use side expansion valves 24 and 34, then evaporates while passing through the second adsorption heat exchangers 23 and 33, and the latent heat system use side four way switching valve. The refrigerant is sucked again into the compression mechanism 61 through the suction gas communication pipe 9 (see the arrows attached to the refrigerant circuit 10 in FIG. 20).
- the expansion valves 41 and 51 of the sensible heat system use units 4 and 5 of the sensible heat system use units 4 and 5 are different from the case of the operation using only the latent heat load processing system described above. Since it is opened to allow the refrigerant to flow through 42 and 52 and the degree of opening is adjusted, a part of the high-pressure gas refrigerant compressed and discharged by the compression mechanism 61 passes through the latent heat system use units 2 and 3. It will be flowing.
- the heat of the adsorbent heated by the condensation of the refrigerant desorbs moisture, and the desorbed moisture is given to the indoor air RA that has been sucked into the indoor air suction loca. Is done.
- the moisture desorbed from the first adsorption heat exchangers 22, 32 is discharged to the outside as exhaust air EA through the exhaust port together with the indoor air RA.
- the moisture in the outdoor air OA is adsorbed by the adsorbent to dehumidify the outdoor air OA, and the heat of adsorption generated at that time is absorbed by the refrigerant to evaporate the refrigerant.
- the outdoor air OA dehumidified in the exchanges 23 and 33 is supplied into the building as supply air SA through the air supply port (see arrows on both sides of the adsorption heat exchanges 22, 23, 32, and 33 in Fig. 20). See).
- the latent heat system use side four-way switching valves 21 and 31 are in the second state (see the broken line of the latent heat system use side four-way switching valves 21 and 31 in FIG. 21). Is set to In this state, the high-pressure gas refrigerant discharged from the compression mechanism 61 flows into the second adsorption heat exchangers 23 and 33 through the discharge gas communication pipe 8 and the four-way switching valves 21 and 31 on the latent heat system utilization side.
- the heat of the adsorbent heated by the condensation of the refrigerant is desorbed, and the desorbed water is discharged into the indoor air sucked by the indoor air. Granted to RA.
- the moisture desorbed from the second adsorption heat exchangers 23 and 33 is discharged to the outside as exhaust air EA through the exhaust port along with the indoor air RA.
- the moisture in the outdoor air OA is adsorbed by the adsorbent to dehumidify the outdoor air OA, and the heat of adsorption generated at that time is absorbed by the refrigerant to evaporate the refrigerant.
- the outdoor air OA dehumidified by the first adsorption heat exchangers 22 and 32 is supplied into the house through the air supply port as supply air SA (see FIG. 21 for the adsorption heat exchanges 22, 23, 32, and 33). See arrows on both sides).
- the latent heat system use side control units 28 and 38 of the latent heat system use units 2 and 3 transmit these target temperature values and Along with the target relative humidity value, the temperature value and relative humidity value of the indoor air sucked into the unit detected by the RA intake temperature and humidity sensors 225 and 235, and the OA intake temperature and humidity The temperature value and the relative humidity value of the outdoor air sucked into the unit detected by the degree sensors 26 and 36 are input.
- step S11 the latent heat system utilization side control units 28 and 38 calculate the target value of the entguri or the absolute humidity from the target temperature value and the target relative humidity value of the indoor air, and calculate the RA suction temperature Temperature value and relative humidity value detected by humidity sensors 25, 35 Calculate the current value of entguri or the current value of absolute humidity of air taken into the unit from indoors, and calculate the required latent heat capacity, which is the difference between the two values. Calculate the value Ah. Then, the value of Ah is converted into a capacity UP signal K1 for notifying the heat source side control unit 65 whether the processing capacity of the latent heat system using units 2 and 3 needs to be increased.
- the capacity UP signal K1 when the absolute value of Ah is smaller than a predetermined value (that is, when the humidity of the indoor air is close to the target humidity and there is no need to increase or decrease the processing capacity), the capacity UP signal If K1 is set to “0” and the absolute value of ⁇ h must be higher than the predetermined value, the processing capacity must be higher than the specified value.
- the capacity UP signal K1 is set to “A”, and when the absolute value of Ah is larger than the specified value in the direction in which the processing capacity must be reduced (that is, dehumidifying operation). In this case, when the humidity value of indoor air is lower than the target humidity value and it is necessary to reduce the processing capacity), the capacity UP signal K1 is set to “B”.
- this capability UP signal K1 is transmitted from the latent heat system use side control units 28 and 38 to the heat source side control unit 65, and is used in step S12 to calculate the target condensation temperature value TcS and the target evaporation temperature value TeS.
- this point will be described later.
- the three-way switching valve 62 of the heat source unit 6 is in the condensation operation state (the state where the first port 62a and the third port 62c are connected).
- the cooling / heating switching valves 71, 81 of the connection units 14, 15 are in a cooling operation state (a state in which the first ports 71a, 81a and the second ports 71b, 81b are connected).
- the sensible heat system use side expansion valves 41, 51 of the sensible heat system use units 4, 5 are adjusted in opening so as to reduce the pressure of the refrigerant.
- the heat-source-side expansion valve 64 is opened.
- the high-pressure gas discharged from the compression mechanism 61 The refrigerant passes through the three-way switching valve 62, flows into the heat source side heat exchanger 63, is condensed, and becomes a liquid refrigerant.
- This liquid refrigerant is sent to the sensible heat system utilization units 4 and 5 through the heat source side expansion valve 64, the receiver 68 and the liquid communication pipe 7. Then, the liquid refrigerant sent to the sensible heat system use units 4 and 5 is decompressed by the sensible heat system use side expansion valves 41 and 51, and then the indoor refrigerant sucked into the units in the air heat exchangers 42 and 52.
- the indoor air RA cooled by heat exchange with the refrigerant in the air heat exchanges 42 and 52 is supplied indoors as supply air SA.
- the sensible heat system side expansion valves 41 and 51 are connected to the superheat degree SH in the air heat exchangers 42 and 52, that is, the air heat exchangers 42 and 53 detected by the liquid side temperature sensors 43 and 53, as described later. So that the temperature difference between the liquid-side refrigerant temperature value of the air-side heat exchangers 42 and 52 detected by the gas-side temperature sensors 54 and 55 becomes the target superheat degree SHS.
- the opening is controlled.
- the sensible heat system use side control units 48 and 58 of the sensible heat system use units 4 and 5 send these target temperature values together with the RA intake temperature sensor 45, The temperature value of the indoor air sucked into the unit detected by 55 is input.
- step S14 the sensible heat system use side control unit 48, 58 controls the temperature difference between the target temperature value of the indoor air and the temperature value detected by the RA intake temperature sensors 45, 55 (hereinafter, required sensible heat Capacity value ⁇ ) is calculated.
- required sensible heat capacity value ⁇ is the difference between the target indoor air temperature value and the current indoor air temperature value as described above, it must be processed in the air conditioning system 1.
- Nana ⁇ ⁇ Equivalent to sensible heat load is converted into a capacity UP signal K2 for notifying the heat source side control section 65 whether the processing capacity of the sensible heat system utilization units 4 and 5 needs to be increased.
- the capacity UP signal K2 when the absolute value of ⁇ is smaller than a predetermined value (that is, when the indoor air temperature value is close to the target temperature value and there is no need to increase or decrease the processing capacity)
- the capacity UP signal K2 When the capacity UP signal K2 is set to “0” and the absolute value of ⁇ ⁇ ⁇ ⁇ is larger than the specified value in the direction in which the processing capacity must be increased (that is, in cooling operation, the indoor air temperature value is If it is necessary to increase the processing capacity higher than that), the capacity UP signal ⁇ 2 is set to “a”, and the absolute value of ⁇ T must be lower than the predetermined value. In this case (that is, in the case of cooling operation, when the temperature of the indoor air is lower than the target temperature and the processing capacity needs to be reduced), the capacity UP signal K2 is set to “b”.
- step S15 the sensible heat system utilization side control units 48 and 58
- the target superheat degree SHS Change the value of the target superheat degree SHS according to the value of ⁇ . For example, if it is necessary to reduce the processing capacity of the sensible heat system cuts 4 and 5 (when the capacity UP signal K2 is “b”), the target superheat degree SHS is increased and the air heat exchange is performed. The degree of opening of the sensible heat system utilization side expansion valves 41 and 51 is controlled so as to reduce the amount of heat exchanged between the refrigerant and the air in 42 and 52.
- the heat source side control unit 65 transmits the capability UP signal K1 of the latent heat system use units 2 and 3 transmitted from the latent heat system use side control units 28 and 38 to the heat source side control unit 65, and the sensible heat
- the target condensation temperature TcS and the target evaporation temperature TeS are calculated using the capacity UP signal K2 of the sensible heat system use units 4 and 5 transmitted from the system use side control units 48 and 58 to the heat source side control unit 65. I do.
- the target condensing temperature value TcS is calculated by adding the current target condensing temperature value to the capacity UP signal K1 of the latent heat system use units 2 and 3 and the capacity UP signal K2 of the sensible heat system use units 4 and 5. Is done.
- the target evaporation temperature TeS is calculated by subtracting the capacity increase signal K1 of the latent heat system use units 2 and 3 and the capacity increase signal K2 of the sensible heat system use units 4 and 5 from the current target evaporation temperature value. You. Thus, when the value of the capacity up signal K1 is "A” or when the value of the capacity up signal K2 is "a", the target condensing temperature value TcS increases and the target evaporation temperature value TeS decreases.
- a system condensing temperature value Tc and a system evaporating temperature value Te which are values corresponding to the measured values of the condensing temperature and the evaporating temperature of the entire air conditioning system 1, are calculated.
- the system condensation temperature value Tc and the system evaporation temperature value Te are the suction pressure value of the compression mechanism 61 detected by the suction pressure sensor 66 and the discharge pressure value of the compression mechanism 61 detected by the discharge pressure sensor 67, respectively.
- the operating capacity of the compression mechanism 61 By controlling the operating capacity of the compression mechanism 61 using the operating capacity of the compression mechanism 61 determined in this way, system control for approaching the target relative humidity of indoor air is performed. For example, when the temperature difference ATc force also has a positive value obtained by subtracting the temperature difference ATe, the operating capacity of the compression mechanism 61 is increased, and conversely, when the temperature difference ATc force has a negative value obtained by subtracting the temperature difference ATe. Controls to reduce the operation capacity of the compression mechanism 61.
- the latent heat load (corresponding to the required latent heat treatment capacity, Ah) that must be treated as the entire air conditioning system 1 and the air conditioning system 1 as a whole are treated.
- the sensible heat load (corresponding to the required sensible heat treatment capacity, ⁇ ) is the latent heat load processing system (specifically, the latent heat system utilization units 2 and 3) and the sensible heat load processing system (specifically, It is processed using the sensible heat system utilization unit 4, 5).
- the increase and decrease in the processing capacity of the latent heat load processing system and the increase and decrease in the processing capacity of the sensible heat load processing system are calculated based on the required latent heat treatment capacity value Ah and the required sensible heat treatment capacity value ⁇ , and based on these values.
- the latent heat load processing in the latent heat load processing system having the adsorption heat exchange 23, 32, 33, and the sensible heat load processing system having the air heat exchange 42, 52 And the processing of the sensible heat load at the same time.
- the operation capacity of the compression mechanism constituting the heat source can be controlled well. Can be.
- the required sensible heat treatment capacity value ⁇ T increases (that is, the capacity UP signal K2 becomes “a”), and the required latent heat treatment capacity value A h Is smaller (that is, the capacity UP signal K1 becomes “B”), basically, control for increasing the operation capacity of the compression mechanism 61 is performed.
- the required latent heat treatment capacity value Ah becomes large (that is, the capacity UP signal K1 becomes “A”), control for basically increasing the operation capacity of the compression mechanism 61 is performed.
- the sensible heat treatment is performed together with the latent heat treatment by the adsorption operation or the regeneration operation of the heat transfer exchangers 22, 23, 32, and 33.
- the ratio of the sensible heat treatment capacity to the latent heat treatment capacity changes as the switching time interval is changed, as shown in FIG.
- the sensible heat treatment capacity ratio is increased by increasing the switching time interval.
- the operation of increasing the sensible heat treatment capacity in the latent heat load processing system of the air conditioning system 1 by increasing the switching time interval increases the operating capacity of the compression mechanism 61! ],
- the entire air conditioning system 1 is not wasted, and efficient operation can be performed.
- the required latent heat treatment capacity value Ah becomes large that is, the capacity UP signal K1 is “A”
- the sensible heat treatment capacity ratio is reduced by shortening the switching time interval, and the latent heat load is increased. Can be handled.
- Steps S11-S15 except for steps S16-S19 in FIG. 23 are the same as steps S11-S15 shown in FIG. 22, and thus description thereof will be omitted.
- step S16 the latent heat system utilization side control units 28 and 38 determine whether the switching time intervals of the adsorption heat exchangers 22, 23, 32 and 33 are in the sensible heat priority mode (that is, time D), and determine whether or not the capacity is increased. It is determined whether the signal K1 is "A" (that is, the direction to increase the latent heat treatment capability). Then, when both of these two conditions are satisfied, the switching time interval is changed to the latent heat priority mode (that is, time C) in step S18. Conversely, if at least one of these two conditions is not satisfied, the process moves to step S17.
- step S17 the latent heat system utilization side control units 28 and 38 determine whether the switching time interval of the adsorption heat exchangers 22, 23, 32, and 33 is the latent heat priority mode (that is, time C), and Whether the force UP signal K1 is “B” (that is, the direction to decrease the latent heat treatment capability) and whether the capability UP signal K2 transmitted from the sensible heat system use side control units 48 and 58 through the heat source side control unit 65 is “ a "(that is, in the direction of increasing the sensible heat treatment capability). So Then, when all of these three conditions are satisfied, in step S19, the switching time interval is changed to the sensible heat priority mode (that is, time D). Conversely, if none of these two conditions is satisfied, the process moves to step S12.
- the switching time interval should be extended by such system control (specifically, By changing from time C during normal operation to time D (see Fig. 5), the ratio of the sensible heat treatment capacity can be increased to cope with the increase in sensible heat load.
- the latent heat load increases as in step S16, the system can return to the latent heat priority mode! / It is possible to cope with an increase in the sensible heat load while performing the operation reliably.
- the latent heat load processing system of the air conditioning system 1 performs the cooling operation of the sensible heat load processing system while performing the dehumidifying operation in the full ventilation mode.
- the present invention can be applied to the case where the dehumidification operation is performed in the latent heat load processing system in another mode such as a circulation mode or an air supply mode.
- FIG. 24 and FIG. 25 are schematic refrigerant circuit diagrams illustrating the operation of the air conditioning system 1 during the humidification and heating operation in the full ventilation mode.
- the first adsorption heat exchange becomes a condenser and the second adsorption heat exchanger 23 evaporates, as in the case of the above-described operation of the latent heat load processing system alone.
- the first operation as a heat exchanger and the second operation as the second adsorption heat exchanger 23 as a condenser and the first adsorption heat exchange as an evaporator are alternately repeated.
- the latent heat system utilization unit 3 the first operation in which the first adsorption heat exchange 32 becomes a condenser and the second adsorption heat exchanger 33 becomes an evaporator, and the second adsorption heat exchanger 33 becomes a condenser As a result, the second operation in which the first adsorption heat exchange becomes the evaporator is alternately repeated.
- the operation of the two latent heat system utilization units 2 and 3 will be described together.
- the regeneration operation of the first adsorption heat exchangers 22 and 32 and the adsorption operation of the second adsorption heat exchangers 23 and 33 are performed in parallel. During the first operation, as shown in FIG.
- the four-way switching valves 21 and 31 using the latent heat system are in the first state (see the solid lines of the four-way switching valves 21 and 31 using the latent heat system in FIG. 24). Is set to In this state, the high-pressure gas refrigerant discharged from the compression mechanism 61 flows into the first adsorption heat exchanges 22 and 32 through the discharge gas communication pipe 8 and the latent heat system utilization side four-way switching valves 21 and 31, and It condenses while passing through adsorption heat exchange 22,32.
- the condensed refrigerant is decompressed by the latent heat system use side expansion valves 24 and 34, and then evaporates while passing through the second adsorption heat exchangers 23 and 33, and the latent heat system use side four-way switching valve.
- the refrigerant is sucked again into the compression mechanism 61 through the intake gas communication pipe 9 (see arrows indicated by the refrigerant circuit 10 in FIG. 24).
- the sensible heat system use side expansion valves 41 and 51 of the sensible heat system use units 4 and 5 are different from the case of the operation of only the latent heat load processing system described above. Since it is opened to allow the refrigerant to flow through 42 and 52 and the opening is adjusted, a part of the high-pressure gas refrigerant compressed and discharged by the compression mechanism 61 passes through the latent heat system use units 2 and 3. It will be flowing.
- the first adsorption heat exchangers 22 and 32 water is desorbed from the heated adsorbent by the condensation of the refrigerant, and the desorbed water is discharged to the outdoor air OA sucked from the outside air inlet. Granted.
- the moisture desorbed from the first adsorption heat exchangers 22 and 32 is supplied indoors as supply air SA through an air supply port along with outdoor air OA.
- the moisture in the indoor air RA is adsorbed by the adsorbent to dehumidify the indoor air RA, and the heat of adsorption generated at that time is absorbed by the refrigerant to evaporate the refrigerant.
- the indoor air RA dehumidified by the second adsorption heat exchangers 23 and 33 is discharged outside as exhaust air EA through the exhaust port (both sides of the adsorption heat exchanges 22, 23, 32 and 33 in Fig. 24). (See arrow attached to).
- the latent heat system use side four-way switching valves 21 and 31 are in the second state (see the broken line of the latent heat system use side four-way switching valves 21 and 31 in FIG. 25). Is set to In this state, discharge from the compression mechanism 61 The high-pressure gas refrigerant flows into the second adsorption heat exchangers 23 and 33 through the discharge gas communication pipe 8 and the four-way switching valve 21 and 31 on the latent heat system utilization side, and flows through the second adsorption heat exchangers 23 and 33.
- the condensed refrigerant is decompressed by the latent heat system use side expansion valves 24 and 34, and then evaporates while passing through the first adsorption heat exchangers 22 and 32, and the latent heat system use side four-way switching valve.
- the refrigerant is sucked again into the compression mechanism 61 through the intake gas communication pipe 9 (see the arrows attached to the refrigerant circuit 10 in FIG. 25).
- the second adsorption heat exchanges 23 and 33 moisture is desorbed from the heated adsorbent due to the condensation of the refrigerant, and the desorbed moisture is sucked from the outside air inlet through the outdoor air.
- OA is given to OA.
- the water desorbed from the second adsorption heat exchangers 23 and 33 is supplied indoors as supply air SA through the air supply port together with the outdoor air OA.
- the moisture in the indoor air RA is adsorbed by the adsorbent to dehumidify the indoor air RA, and the heat of adsorption generated at that time is absorbed by the refrigerant to evaporate the refrigerant.
- the indoor air RA dehumidified by the first adsorption heat exchangers 22 and 32 is discharged outside as exhaust air EA through the exhaust port (both sides of the adsorption heat exchanges 22, 23, 32 and 33 in FIG. 25). (See arrow attached to).
- the latent heat system use side control units 28 and 38 of the latent heat system use units 2 and 3 transmit these target temperature values and Along with the target relative humidity value, the RA air intake temperature ⁇ temperature value and relative humidity value of the indoor air sucked into the unit detected by the humidity sensors 25 and 35, and the OA intake temperature ⁇ ⁇ detected by the humidity sensors 26 and 36 The temperature value and the relative humidity value of the outdoor air drawn into the unit are input.
- step S11 the latent heat system utilization side control units 28 and 38 calculate the target value of the entguri or the absolute humidity from the target temperature value and the target relative humidity value of the indoor air, and calculate the RA suction temperature Temperature value and relative humidity value detected by humidity sensors 25, 35 Calculate the current value of entguri or the current value of absolute humidity of air taken into the unit from indoors, and calculate the required latent heat capacity, which is the difference between the two values. Calculate the value Ah. And this The value of Ah is converted to a capability UP signal K1 for notifying the heat source side control unit 65 of whether or not the processing capability of the latent heat system utilization units 2 and 3 needs to be increased.
- the capacity UP signal when the absolute value of Ah is smaller than a predetermined value (that is, when the humidity of the indoor air is close to the target humidity and there is no need to increase or decrease the processing capacity), the capacity UP signal If K1 is set to “0” and the absolute value of ⁇ h must be higher than the predetermined value, the processing capacity must be higher than the specified value. If it is necessary to increase the processing capacity, the capacity UP signal K1 is set to “A”, and the absolute value of A h must be reduced below the predetermined value. If the humidity of indoor air is higher than the target humidity in humidification operation and it is necessary to reduce the processing capacity), the capacity UP signal K1 is set to “B”.
- the capacity UP signal K1 is transmitted from the latent heat system use side control units 28 and 38 to the heat source side control unit 65, and is used in the calculation of the target condensation temperature value TcS and the target evaporation temperature value TeS in step S12. However, this will be described later.
- the operation of the sensible heat load processing system of the air conditioning system 1 will be described.
- the three-way switching valve 62 of the heat source unit 6 is in the evaporating operation state (the state where the second port 62b and the third port 62c are connected).
- the cooling / heating switching valves 71, 81 of the connection units 14, 15 are in a heating operation state (a state in which the first ports 71a, 81a are connected to the third ports 71c, 81c).
- the sensible heat system use side expansion valves 41 and 51 of the sensible heat system use units 4 and 5 are adjusted in opening so as to reduce the pressure of the refrigerant.
- the opening of the heat source side expansion valve 64 is adjusted so as to reduce the pressure.
- the high-pressure gas refrigerant discharged from the compression mechanism 61 flows from the discharge side of the compression mechanism 61 and the three-way switching valve 62 to the discharge gas communication pipe 8 and the connection unit 14. , And 15 to the sensible heat system utilization units 4 and 5.
- the high-pressure gas refrigerant sent to the sensible heat system utilization units 4 and 5 is condensed by the heat exchange with the indoor air RA drawn into the units in the air heat exchangers 42 and 52 to become a liquid refrigerant.
- the liquid is sent to the heat source unit 6 through the sensible heat system use side expansion valves 41 and 51 and the liquid communication pipe 7.
- the indoor air RA heated by heat exchange with the refrigerant in the air heat exchangers 42 and 52 is supplied indoors as supply air SA. Then, the liquid cooling sent to the heat source unit 6 The medium passes through the receiver 68 and is decompressed by the heat-source-side expansion valve 64, then evaporated by the heat-source-side heat exchanger 63 to become a low-pressure gas refrigerant, and is again sucked into the compression mechanism 61 through the three-way switching valve 62. Is done.
- the sensible heat system use side expansion valves 41 and 51 are connected to the subcooling degree SC of the air heat exchangers 42 and 52, that is, the air heat exchange 42 detected by the liquid side temperature sensors 43 and 53, respectively.
- the temperature difference between the liquid-side refrigerant temperature value of 52 and the gas-side refrigerant temperature value of the air heat exchangers 42 and 52 detected by the gas-side temperature sensors 44 and 54 is set to the target supercooling degree SCS.
- the opening is controlled.
- the sensible heat system use side control units 48 and 58 of the sensible heat system use units 4 and 5 send these target temperature values together with the RA intake temperature sensor 45, The temperature value of the indoor air sucked into the unit detected by 55 is input.
- step S14 the sensible heat system use side control unit 48, 58 controls the temperature difference between the target temperature value of the indoor air and the temperature value detected by the RA intake temperature sensors 45, 55 (hereinafter, required sensible heat Capacity value ⁇ ) is calculated.
- required sensible heat capacity value ⁇ is the difference between the target indoor air temperature value and the current indoor air temperature value as described above, it must be processed in the air conditioning system 1.
- Nana ⁇ ⁇ Equivalent to sensible heat load is converted into a capacity UP signal K2 for notifying the heat source side control section 65 whether the processing capacity of the sensible heat system utilization units 4 and 5 needs to be increased.
- the capacity UP signal K2 when the absolute value of ⁇ is smaller than a predetermined value (that is, when the indoor air temperature value is close to the target temperature value and there is no need to increase or decrease the processing capacity), the capacity UP signal K2 is set to “ 0, and the absolute value of ⁇ is greater in the direction in which the processing capacity must be higher than the specified value (that is, in the heating operation, the processing capacity where the indoor air temperature value is lower than the target temperature value). If it is necessary to increase the capacity, the capacity UP signal K2 is set to “a”, and the absolute value of ⁇ T must be lower than the predetermined value. In operation, when the temperature of the indoor air is higher than the target temperature and it is necessary to reduce the processing capacity), the capacity UP signal K2 is set to “b”.
- step S15 the sensible heat system utilization side control units 48 and 58 change the value of the target supercooling degree SCS according to the value of the required sensible heat capacity value ⁇ . For example, if it is necessary to reduce the processing capacity of the sensible heat system cuts 4 and 5 (when the capacity UP signal K2 is “b”), the target supercooling degree SHS is increased and the air heat exchange is performed. The openings of the sensible heat system utilization side expansion valves 41 and 51 are controlled so as to reduce the amount of heat exchanged between the refrigerant and the air in 42 and 52.
- the heat source side control unit 65 transmits the capability UP signal K1 of the latent heat system use units 2 and 3 transmitted from the latent heat system use side control units 28 and 38 to the heat source side control unit 65, and the sensible heat
- the target condensation temperature TcS and the target evaporation temperature TeS are calculated using the capacity UP signal K2 of the sensible heat system use units 4 and 5 transmitted from the system use side control units 48 and 58 to the heat source side control unit 65. I do.
- the target condensing temperature value TcS is calculated by adding the current target condensing temperature value to the capacity UP signal K1 of the latent heat system use units 2 and 3 and the capacity UP signal K2 of the sensible heat system use units 4 and 5. Is done.
- the target evaporation temperature TeS is calculated by subtracting the capacity increase signal K1 of the latent heat system use units 2 and 3 and the capacity increase signal K2 of the sensible heat system use units 4 and 5 from the current target evaporation temperature value. You. Thus, when the value of the capacity up signal K1 is "A” or when the value of the capacity up signal K2 is "a", the target condensing temperature value TcS increases and the target evaporation temperature value TeS decreases.
- a system condensing temperature value Tc and a system evaporating temperature value Te which are values corresponding to the actually measured condensing temperature and evaporating temperature of the air conditioning system 1, are calculated.
- the system condensation temperature value Tc and the system evaporation temperature value Te are the suction pressure value of the compression mechanism 61 detected by the suction pressure sensor 66 and the discharge pressure value of the compression mechanism 61 detected by the discharge pressure sensor 67, respectively.
- the temperature difference ATc force is also compressed if the value obtained by subtracting the temperature difference ATe is a positive value.
- the operating capacity of the mechanism 61 is increased, and conversely, the temperature difference ATc force is controlled so as to decrease the operating capacity of the compression mechanism 61 when the value obtained by subtracting the temperature difference ATe is a negative value.
- the same system control as that during the dehumidifying and cooling operation can be performed.
- the required sensible heat treatment capacity value ⁇ increases (that is, the capacity UP signal K2 is “a”).
- the required latent heat treatment capacity value Ah becomes small (that is, the capacity UP signal K1 is “B”)
- control is performed so as to increase the operation capacity of the compression mechanism 61.
- the required latent heat treatment capacity value Ah becomes large (that is, the capacity UP signal K1 is “A”)
- control is basically performed so as to increase the operation capacity of the compression mechanism 61.
- the switching time intervals of the adsorption heat exchangers 22, 23, 32, and 33 are changed according to the control flow shown in FIG.
- Accompanying system control can be performed. That is, as in the case of the dehumidifying and cooling operation, when the required latent heat treatment capacity value Ah is small and the required sensible heat treatment capacity value ⁇ is large, the switching time interval should be extended (specifically, in the normal operation mode).
- the sensible heat treatment capacity ratio can be increased by changing the time from time to time D (see Fig. 5) to cope with an increase in sensible heat load.
- the mode can be returned to the latent heat priority mode. It is possible to cope with an increase in heat load.
- the present invention can be applied to the case where the dehumidification operation is performed in the latent heat load processing system in another mode such as a circulation mode or an air supply mode.
- FIG. 4 is a schematic refrigerant circuit diagram showing an operation during simultaneous operation of dehumidifying cooling and humidifying heating in a full ventilation mode in the present embodiment.
- the pair of the latent heat system use unit 2 and the sensible heat system use unit 4 performs the dehumidifying cooling operation
- the pair of the latent heat system use unit 3 and the sensible heat system use unit 5 performs the humidification heating operation. It is assumed that the operation is to be performed, that the heat source unit 6 as a whole has the three-way switching valve 62 in the condensation operation state, and that the entire system has a large cooling load. Note that the system control of the air conditioning system 1 is the same as that in the above-described dehumidifying cooling operation and humidifying heating operation, and thus the description is omitted.
- the same operation as the dehumidifying operation in the all ventilation mode during the dehumidifying cooling operation described above is performed.
- the latent heat system utilization unit 3 the same operation as the humidification operation in the full ventilation mode during the humidification and heating operation described above is performed.
- the operation of the sensible heat load processing system of the air conditioning system 1 will be described.
- the sensible heat system utilization unit 4 that is operated in pairs with the latent heat system utilization unit 2, the same operation as the cooling operation during the above-described dehumidifying cooling operation is performed.
- the same operation as the heating operation in the above-described humidifying and heating operation is performed.
- the heat source unit 6 since the three-way switching valve 62 is in the condensation operation state, the flow of the refrigerant in the heat source side refrigerant circuit 10e is the same as in the cooling operation.
- FIG. 28 is a schematic refrigerant circuit diagram showing the operation of the air conditioning system 1 when the first system is started.
- FIG. 29 is a schematic refrigerant circuit diagram showing an operation at the time of starting the second system in the air conditioning system 1.
- the first system startup method uses the outdoor air to process the latent heat load of the air conditioning system 1. It is a method of operating without passing through the adsorption heat exchange of the stem ⁇ 22,23,32,33.
- the second system start-up method uses the latent heat load of the outdoor air when switching between the adsorption operation and the regeneration operation of the adsorption heat exchangers 22, 23, 32, and 33 of the latent heat load treatment system of the air conditioning system 1 is stopped.
- the third system starting method is a method of operating the adsorption heat exchangers 22, 23, 32, and 33 with the switching time interval between the adsorption operation and the regeneration operation being longer than in the normal operation.
- the sensible heat load processing system of the air conditioning system 1 (that is, the sensible heat system use units 4 and 5 and the heat source unit 6) is activated to perform the cooling operation.
- the operation during the cooling operation of the sensible heat load processing system is the same as the operation during the above-described dehumidifying cooling operation, and thus the description thereof is omitted.
- the latent heat load processing system of the air conditioning system 1
- outdoor air is sucked into the unit by the operation of the air supply fan, exhaust fan, damper, etc., and the adsorption heat exchangers of the units 2 and 3 using the latent heat system.
- the compression mechanism 61 of the heat source unit 6 is not activated, and the latent heat The latent heat treatment is not performed in the load processing system.
- the operation at the time of starting the system is released after a predetermined condition is satisfied, and the operation is shifted to a normal dehumidifying cooling operation. For example, after a predetermined time (for example, about 30 minutes) elapses, the system startup force is released by the timer provided in the heat source side control unit 65, and the operation at the time of the system startup is canceled, or the input is performed by the remote controllers 11 and 12.
- the difference between the target indoor air temperature measured and the temperature of the indoor air drawn into the unit detected by the RA intake temperature sensors 45 and 55 is a predetermined temperature difference (for example, 3 ° C). ) Release the operation at the time of system startup after the following.
- the air heat exchanged in the air heat exchanges 42 and 52 of the sensible heat system use units 4 and 5 is supplied indoors to mainly perform the sensible heat treatment.
- the air-conditioning capacity of the load processing system is not being exhibited, it is possible to prevent the introduction of a heat load from the outside air, and to quickly reach the target temperature of indoor air.
- a latent heat load processing system having adsorption heat exchanges 22, 23, 32, and 33 and mainly processing indoor latent heat loads
- a latent heat load processing system having air heat exchangers 42 and 52 and mainly processing indoor sensible heat loads.
- cooling can be quickly performed at the time of system startup.
- this system start-up method can be applied also to the case of the power heating operation described in the case of performing the cooling operation of the sensible heat load processing system.
- the sensible heat load processing system of the air conditioning system 1 (that is, the sensible heat system use units 4 and 5 and the heat source unit 6) is activated to perform the cooling operation.
- the operation during the cooling operation of the sensible heat load processing system is the same as that described above, and the description is omitted.
- the switching operation of the four-way switching valves 21 and 31 on the latent heat system utilization side is not performed, and the same air flow path as the circulation mode is operated by the operation of the damper or the like.
- the indoor air RA is sucked into the unit through the indoor air intake port and supplied indoors as supply air SA through the air supply port.
- the outdoor air OA is sucked into the unit through the outside air intake port, and the exhaust air EA is exhausted outside through the exhaust port.
- the desorbed moisture is provided to the outdoor air OA sucked from the outside air inlet and discharged to the outside as exhaust air EA through the exhaust port.
- the indoor air is absorbed by the adsorbent RA is dehumidified and supplied indoors as supply air SA through the air supply port.
- the adsorbents of the adsorption heat exchangers 22, 23, 32, and 33 adsorb water to near the water adsorption capacity. Since sensible heat processing is mainly performed, the latent heat load processing system will eventually function as a system for processing sensible heat load.
- the sensible heat treatment capability of the entire air conditioning system 1 can be increased, and indoor sensible heat treatment can be promoted.
- the operation at the time of starting the system is canceled after a predetermined condition is satisfied, and the operation is shifted to a normal dehumidifying cooling operation. For example, after a predetermined time (for example, about 30 minutes) elapses from the start of the system, the operation at the start of the system is canceled by the timer provided in the heat source side control unit 265, or the input by the remote controllers 11 and 12 is performed.
- the difference between the target indoor air temperature and the air intake temperature of the indoor air detected by the humidity sensors 25, 35 detected by the humidity sensor 25, 35 is a predetermined temperature difference (for example, 3 ° C). )
- the operation at system startup is canceled.
- the air heat exchanged in the air heat exchanges 42 and 52 of the sensible heat system use units 4 and 5 is supplied indoors. Passing outdoor air through the adsorption heat exchangers 22, 23, 32, and 33 in a state where the sensible heat treatment is mainly performed and the switching between the adsorption operation and the regeneration operation of the adsorption heat exchangers 22, 23, 32, and 33 is stopped. Since the sensible heat treatment is performed by discharging the gas to the outside after the heat treatment, the sensible heat treatment indoors is promoted at the time of starting the system, so that the target temperature of the indoor air can be quickly reached.
- a latent heat load processing system having adsorption heat exchanges 22, 23, 32, and 33 and mainly processing indoor latent heat loads, and an air heat exchanger 42 and 52 and mainly indoor sensible heat loads
- cooling can be performed quickly when the system is started. Note that, here, the case where the sensible heat load processing system is operated in the cooling mode has been described. However, even in the case of performing the heating operation, the system start-up method can be applied.
- the latent heat load processing system of the air conditioning system 1 performs the dehumidifying operation in the full ventilation mode, and the sensible heat load processing system of the air conditioning system 1 performs the cooling operation.
- the sensible heat load processing system that is, the sensible heat system utilization units 4 and 5 and the heat source unit 6
- the operation during the cooling operation of the sensible heat load processing system is the same as that described above, and thus the description is omitted.
- the latent heat load treatment system of the air conditioning system 1 is similar to the above in that the dehumidifying operation is performed in the full ventilation mode, but the switching time interval between the adsorption operation and the regeneration operation is used in the normal operation.
- the switching time interval D which gives priority to sensible heat treatment, is set longer than the switching time interval C, which gives priority to latent heat treatment.
- the switching operation of the latent heat system utilization side four-way switching valves 21 and 31 of the latent heat system utilization units 2 and 3 is performed only at system startup at a slower cycle than during normal operation.
- the adsorption heat exchangers 22, 23, 32 and 33 mainly perform the sensible heat treatment when the power time D during which the latent heat treatment is mainly performed has elapsed.
- the latent heat load processing system will function mainly as a system for processing sensible heat load.
- the sensible heat treatment capability of the entire air conditioning system 1 can be increased, and indoor sensible heat treatment can be promoted.
- the operation at the time of starting the system is released after a predetermined condition is satisfied, and the operation shifts to a normal dehumidifying and cooling operation.
- a predetermined time for example, about 30 minutes
- the system startup force is canceled by a timer provided in the heat source side control unit 65, or the operation at the time of system startup is canceled, or input is performed by the remote controllers 11 and 12.
- the difference between the measured indoor air target temperature value and the indoor air temperature value sucked into the unit detected by the RA intake temperature 'humidity sensor 25, 35 is a predetermined temperature difference (for example, 3 ° C).
- the switching time intervals in the adsorption heat exchangers 22, 23, 32, and 33 of the units 2 and 3 using the latent heat system are set longer at the time of system startup than during normal operation.
- the target temperature of indoor air can be quickly reached.
- a latent heat load processing system that has adsorption heat exchange ⁇ 22, 23, 32, and 33 and mainly processes indoor latent heat load
- an air heat exchanger 42 and 52 that mainly processes indoor sensible heat load
- Air conditioning system consisting of a sensible heat load treatment system In system 1, cooling can be performed quickly when the system is started.
- the sensible heat load processing system performs the cooling operation has been described.
- the system start-up method can be applied. Also, here, the case where the latent heat load processing system is operated in the full ventilation mode has been described, but the system start-up method can be applied to other modes such as the circulation mode and the air supply mode. It is.
- the value of the temperature of the indoor air at the time of starting the system The target temperature of the air in the house In some cases. In such a case, since it is not necessary to perform the above-described system startup, the operation at the time of system startup may be omitted and the system may be shifted to the normal operation.
- the target temperature of the indoor air and the temperature of the indoor air must be compared with each other before the operation for preferentially processing the indoor sensible heat load as described above is started.
- Determines whether the temperature difference is less than or equal to a predetermined temperature difference e.g., the same as the condition for canceling operation at system startup
- determines the temperature difference between the indoor air target temperature and the indoor air temperature If the temperature difference is equal to or less than the predetermined temperature difference, the operation at the time of starting the system can not be performed.
- the air conditioning system 1 of the present embodiment has the following features.
- the latent heat system use side refrigerant circuit 10a, 10b having the adsorption heat exchangers 22, 23, 32, 33 and the sensible heat system use side refrigerant circuit having the air heat exchangers 42, 52 are provided.
- a latent heat load processing system that mainly processes indoor latent heat loads and a sensible heat load processing system that mainly processes indoor sensible heat loads are provided. Is configured.
- the latent heat load that is, The latent heat treatment capacity
- the sensible heat load ie, the required sensible heat treatment capacity
- the latent heat system use side refrigerant circuits 10a and 10b are the latent heat system use side refrigerant circuits 10a and 10b, and the sensible heat system use side refrigerant circuit. It is processed using a latent heat load processing system and a sensible heat load processing system consisting of 10c, 10d and the heat source side refrigerant circuit 10e. That is, all of the latent heat system use side refrigerant circuits 10a and 10b and the sensible heat system use side refrigerant circuits 10c and 10d are combined into one heat source.
- the latent heat system use side refrigerant circuits 10a and 10b connect the discharge gas communication pipe 8 and the suction gas communication pipe 9 to the discharge side and the suction side of the compression mechanism 61 of the heat source side refrigerant circuit 10e.
- the adsorption heat exchange 22, 23, 32, and 33 can function as an evaporator or as a condenser to perform dehumidification in an indoor air-conditioned space.
- dehumidification or humidification can be performed according to the needs of each indoor air-conditioned space, such as humidification in other air-conditioned spaces.
- the sensible heat system use side refrigerant circuits 10c and 1Od are connected to the liquid side of the heat source side heat exchanger 63 of the heat source side refrigerant circuit 10e via the liquid communication pipe 7.
- the discharge side and the suction side of the compression mechanism 61 are connected via a discharge gas communication pipe 8 and a suction gas communication pipe 9 to constitute a sensible heat load processing system.
- the connection state with the discharge side and the suction side can be switched by the cooling / heating switching valves 71 and 81 of the connection units 14 and 15 as incisions, so that they can be connected via the discharge gas communication pipe 8.
- each of the air-conditioning side refrigerant circuits 10c and 10d performs cooling in an indoor air-conditioned space while performing other air-conditioning. It is possible to configure an air-conditioning system that performs simultaneous cooling and heating according to the needs of each indoor air-conditioned space, such as heating in a space, according to the needs of each indoor air-conditioned space.
- the increase and decrease in the processing capacity of the latent heat load processing system and the increase and decrease in the processing capacity of the sensible heat load processing system are mainly performed by controlling the operating capacity of the common compression mechanism 61.
- the required latent heat treatment capacity value ⁇ h and the required sensible heat treatment capacity value ⁇ T are calculated, and the operating capacity of the compression mechanism 61 is controlled based on these values.
- the processing of the latent heat load in the latent heat load processing system having the adsorption heat exchangers 22, 23, 32, and 33 and the processing of the sensible heat load in the sensible heat load processing system having the air heat exchangers 42 and 52 are described. It can be done both. As a result, even when the heat sources of the latent heat load processing system and the sensible heat load processing system are shared, the operation capacity of the compression mechanism constituting the heat source can be controlled well.
- the target evaporation temperature value and the target condensation temperature value of the entire system are calculated,
- the suction pressure force of the compression mechanism 61 is also calculated from the evaporation temperature value as a value corresponding to the evaporation temperature of the entire system and the condensation temperature value as a value corresponding to the condensation temperature of the entire system from the discharge pressure value of the compression mechanism. Further, the temperature difference between these values and the target evaporation temperature and the target condensation temperature is calculated, and based on these temperature differences, the operation capacity of the compression mechanism constituting the heat source is controlled. .
- the required sensible heat treatment capacity value ⁇ is increased, and the sensible heat treatment capacity in the sensible heat system utilization side refrigerant circuits 10c and 10d needs to be increased.
- the switching time interval between the adsorption operation and the regeneration operation of adsorption heat exchange 22, 23, 32, 33 Adsorption heat exchange by lengthening By increasing the ratio of the sensible heat treatment capacity of the heat exchangers 22, 23, 32, and 33, the sensible heat treatment capacity of the latent heat load processing system can be increased.
- the adsorption heat exchanger 22 , 23, 32, 33 by reducing the switching time interval between the adsorption operation and the regeneration operation, the adsorption heat exchange 22, 23, 32, 33 reduces the sensible heat treatment capacity ratio, and the latent heat treatment capacity in the latent heat load treatment system.
- the switching time interval between the adsorption operation and the regeneration operation of the adsorption heat exchangers 22, 23, 32, and 33 is changed.
- the ratio of the sensible heat treatment capacity of the adsorption heat exchangers 22, 23, 32, and 33 can be changed without increasing the operating capacity of the compression mechanism. Driving Will be able to do.
- the sensible heat treatment is mainly performed by supplying the air heat exchanged in the air heat exchanges 42 and 52 of the sensible heat system utilization units 4 and 5 indoors, and
- the latent heat load processing system The air-conditioning capability of the present invention can be exerted to prevent the introduction of a heat load from the outside air in a certain state, and the target temperature of indoor air can be quickly reached.
- the latent heat load processing system having the adsorption heat exchange 23, 32, 33 and mainly processing the indoor latent heat load, and the sensible heat having the air heat exchangers 42 and 52 and mainly processing the indoor sensible heat load
- the air conditioning system 1 including the load processing system cooling and heating can be performed quickly when the system is started.
- the air heat-exchanged in the air heat exchangers 42 and 52 of the sensible heat system utilization units 4 and 5 is supplied indoors mainly to supply air.
- the sensible heat treatment can be performed by allowing the outdoor air to pass through the adsorption heat exchangers 22, 23, 32, and 33 and then discharging the air outside. Therefore, when the system is started, the indoor sensible heat treatment is promoted, and the target temperature of the indoor air can be quickly reached.
- a latent heat load processing system having adsorption heat exchanges 22, 23, 32, 33 and mainly processing indoor latent heat loads, and an air heat exchanger 42, 52 mainly processing indoor sensible heat loads.
- the air conditioning system 1 including the sensible heat load processing system cooling and heating can be performed quickly when the system is started.
- the switching time intervals in the adsorption heat exchangers 22, 23, 32, and 33 of the latent heat system utilization units 2 and 3 at the time of system startup are longer than those at the time of normal operation.
- the target temperature of indoor air can be quickly reached.
- a latent heat load processing system that has adsorption heat exchanges 22, 23, 32, and 33 and mainly processes indoor latent heat loads, and an air heat exchanger 42 and 52 that mainly processes indoor sensible heat loads
- cooling and heating can be performed quickly when the system is started.
- the operation at the start of the system can be canceled after a sufficient time has elapsed since the start of the system, and the difference between the target indoor air temperature and the indoor air temperature value can be released. Is released after the temperature becomes equal to or less than the predetermined temperature difference, it is possible to promptly shift to the normal operation for processing the latent heat load and the sensible heat load.
- the sensible heat system utilization units 4 and 5 and the connection units 14 and 15 that constitute the sensible heat load processing system are separate units.
- the cooling / heating switching valves 71, 81 of the connection units 14, 15 may be built in the sensible heat system utilization units 4, 5.
- the connection units 14 and 15 The connection unit control units 72 and 82 are omitted, and the sensible heat system use side control units 48 and 58 also have the functions of the connection unit control units 72 and 82.
- the latent heat system use side refrigerant circuits 10a and 10b constituting the latent heat load treatment system are built in the latent heat system use units 2 and 3, and constitute the sensible heat load treatment system.
- the sensible heat system use side refrigerant circuits 10c and 10d are built in the sensible heat system use units 4 and 5 and the connection units 14 and 15, and the latent heat system use units 2 and 3, the sensible heat system use units 4 and 5 and the connection unit
- the air conditioning system 101 of the present modified example has the latent heat system use side refrigerant circuits 110a and 110b and the sensible heat load, which constitute the latent heat load processing system.
- the sensible heat system use side refrigerant circuits 110c and 110d constituting the processing system may form integral use units 102 and 103.
- the latent heat system use units 2 and 3 including the latent heat system use side refrigerant circuits 10a and 10b indoors and the sensible heat system use side refrigerant circuit 10c
- the RA suction temperature sensors 45 and 55 provided in the sensible heat system use units 4 and 5 and the connection units 14 and 15 of the air conditioning system 1 of the above embodiment, and the sensible heat system use side control units 48 and 58.
- the connection unit control units 72 and 82 are omitted, and the latent heat system use side control units 128 and 138 also have the functions of the sensible heat system use side control units 48 and 58 and the connection unit control units 72 and 82.
- the dehumidification or humidification is performed in the adsorption heat exchangers 122, 123, 132, and 133, that is, in the latent heat system use side refrigerant circuits 10a and 10b.
- the operation of supplying the indoor (ie, the latent heat-treated) air can be performed.
- the latent heat system use side refrigerant circuits 110a and 110b and the sensible heat system use side refrigerant circuit 110c which constitutes the sensible heat load processing system, and the lOd and the power integrated use unit Since it is built in 102 and 103, as shown in Fig. 32, In the heat exchange exchangers 122, 123, 132, 133, that is, in the refrigerant circuits 10a, 10b on the latent heat system use side!
- air that has been dehumidified or humidified can be further cooled or heated (ie, sensible heat treatment) (see the adsorption heat exchangers 122, 123, 132, 133 in FIG. 32).
- Sensible heat load along with the processing of latent heat load by adsorption heat exchangers 122, 123, 132, 133, for example, to be suitable for the indoor target air temperature. Even if the temperature changes, this air is not blown into the room as it is, but it is further sensible heat-treated by air heat exchange ⁇ 142, 152 to reach a temperature suitable for the target indoor air temperature. Later, driving to blow indoors can be performed.
- the configuration of the refrigerant circuit 110 of the air-conditioning system 101 of the present modification is the same as the configuration of the refrigerant circuit 10 of the air-conditioning system 1 described above.
- the reference numerals are changed to those in the hundreds, and the description of each part is omitted.
- the sensible heat system use side refrigerant circuits 10c and 1Od are connected to the liquid communication pipe 7 connected to the liquid side of the heat source side heat exchanger 63 of the heat source side refrigerant circuit lOe. Connected to the discharge gas communication pipe 8 and the suction gas communication pipe 9 via the cooling / heating switching valves 71 and 81 so that the two refrigerant circuits 10c and 10d use the sensible heat system, respectively.
- the air heat exchangers 42 and 52 function as evaporators and condensers, air conditioning is performed in one indoor air-conditioned space while heating is performed in another air-conditioned space.
- the air-conditioning system that performs cooling or heating simultaneously that is, the so-called air-conditioning system capable of simultaneous operation of cooling and heating is configured as in the air-conditioning system 201 of the present embodiment shown in FIG.
- Sensible heat system The refrigerant circuits 210c and 210d are connected to the liquid side of the heat source side heat exchanger 263 of the heat source side refrigerant circuit 210e via the liquid communication pipe 207, and are connected to the suction side of the compression mechanism 261 of the heat source side refrigerant circuit 210e.
- the sensible heat system use side refrigerant circuits 210c and 210d may be configured to be used only for indoor cooling.
- the three-way switching valve 62 of the heat source side refrigerant circuit 10e provided in the air conditioning system 1 of the first embodiment has Connection unit Point power in which 14 and 15 are omitted Force different from the configuration of the refrigerant circuit 10 of the air conditioning system 1 of the first embodiment
- the configuration of the refrigerant circuit 10 of the air conditioning system 1 of the first embodiment Therefore, the reference numerals excluding the reference numerals of the respective parts of the latent heat system use side refrigerant circuits 210a and 210b of the air conditioning system 201 of the present embodiment are changed to the reference numbers in the 200s, and the description of the respective parts is omitted. I do.
- the latent heat system use side refrigerant circuits 210a and 210b constituting the latent heat load treatment system are incorporated in the latent heat system use units 2 and 3, and the sensible heat load treatment system is used.
- the constituent sensible heat system use side refrigerant circuits 210c and 210d are built in the sensible heat system use units 204 and 205, and the latent heat system use units 2 and 3 and the sensible heat system use units 204 and 205 are installed separately.
- the refrigerant circuits 310a and 310b on the latent heat system constituting the latent heat load processing system and the sensible heat system constituting the sensible heat load processing system are used.
- the side IJ units 302 and 303 may be integrated with the refrigerant circuits 310c and 310d.
- the latent heat system use units 2 and 3 including the latent heat system use side refrigerant circuits 210a and 210b indoors and the sensible heat system use side refrigerant Compared to the case where the sensible heat system utilization units 204 and 205 having the circuits 210c and 210d are separately installed, the installation work of the unit size compact dangling unit can be saved.
- the RA suction temperature sensors 245 and 255 and the sensible heat system use side control units 248 and 258 provided in the sensible heat system use units 204 and 205 of the air conditioning system 201 of the second embodiment described above are omitted.
- the latent heat system use side control units 328 and 338 also have the function of the sensible heat system use side control units 248 and 258.
- the adsorption heat exchangers 322, 323, 332, 333 that is, the dehumidification or humidification in the latent heat system use side refrigerant circuits 310a, 310b. Only the operation of supplying the air (ie, latent heat-treated) to the room can be performed.
- the heat exchangers 322, 323, 332, 333 that is, the dehumidification or dehumidification in the latent heat system use side refrigerant circuits 310a, 310b, are incorporated in the integrated use units 302, 303.
- the humidified (ie, latently heat-treated) air can be further cooled or heated (ie, sensible heat-treated) (see arrows on both sides of adsorption heat exchange 322, 323, 332, 333 in FIG.
- the configuration of the refrigerant circuit 310 of the air-conditioning system 301 of the present modification is the same as the configuration of the refrigerant circuit 210 of the air-conditioning system 201 described above. Change the reference code to 300-series code and omit the explanation of each part
- FIG. 36 is a schematic refrigerant circuit diagram of an air conditioning system 401 according to a third embodiment of the present invention.
- the air conditioning system 401 is an air conditioning system that processes a latent heat load and a sensible heat load inside a building or the like by performing a vapor compression refrigeration cycle operation.
- the air conditioning system 401 is a so-called separate type multi-air conditioning system, and mainly includes a plurality of (two in the present embodiment) latent heat system use units 2 and 3 connected to each other in parallel.
- connection pipes 407, 408, and 409 for connecting the heat source unit 406 to the heat source unit 406.
- the heat source unit 406 functions as a common heat source for the latent heat system use units 2 and 3 and the sensible heat system use units 404 and 405.
- the latent heat system utilization units 2 and 3 have the same configuration as the latent heat system utilization units 2 and 3 of the first embodiment, the description of each unit is omitted here.
- the sensible heat system use units 404 and 405 are provided with the condensation sensors 446 and 456.
- RA intake temperature and humidity sensors 445 and 455 are different from the sensible heat system use units 4 and 5 of the first embodiment, but the other configurations are the sensible heat system use units of the first embodiment. Since the configuration is the same as that of 4 and 5, only the reference numerals indicating the respective parts of the sensible heat system utilization units 4 and 5 of the first embodiment are changed to the 400s, and the description of the respective parts is omitted here. I do.
- the dew condensation sensors 446 and 456 are provided so as to function as a dew detection mechanism that detects the presence or absence of dew in the air heat exchangers 442 and 452.
- the force using the dew sensors 446 and 456 is not limited to this.
- the float switch may be provided in place of the dew sensor, as long as it functions as a dew detection mechanism.
- the RA suction temperature / humidity sensors 445 and 455 are temperature / humidity sensors that detect the temperature and relative humidity of the indoor air RA drawn into the unit.
- the heat source unit 406 has the same configuration as the heat source unit 6 of the first embodiment, all the symbols indicating the respective parts of the heat source unit 6 of the first embodiment are merely changed to symbols of the 400s. Description of each part is omitted.
- the sensible heat system use units 404 and 405 are the same as the sensible heat system use units 4 and 5 of the first embodiment, and the gas side of the air heat exchangers 442 and 452 is discharged via the connection units 414 and 415.
- the connection pipe 408 and the suction gas connection pipe 409 are switchably connected.
- the connection units 414 and 415 are mainly connected to control the operation of the cooling / heating switching valves 471 and 481, the evaporating pressure regulating valves 473 and 483, the evaporating pressure sensors 474 and 484, and the components of the connecting units 414 and 415. And unit control sections 472 and 482.
- the cooling / heating switching valves 471 and 481 and the connection unit control units 472 and 482 are the same as the cooling / heating switching valves 71 and 81 and the connection unit control units 72 and 82 of the first embodiment, and thus the description is omitted.
- the evaporating pressure control valves 473 and 483 are the evaporating pressures of the refrigerant in the air heat exchangers 442 and 452 when the air heat exchangers 442 and 452 of the sensible heat exchangers 404 and 405 function as refrigerant evaporators. This is an electric expansion valve provided so as to function as a pressure adjusting mechanism for controlling pressure.
- the evaporating pressure sensors 474 and 484 are pressure sensors provided to function as a pressure detecting mechanism for detecting the pressure of the refrigerant in the air heat exchangers 442 and 452.
- the sensible heat system utilization units 404 and 405 include dehumidifying and cooling units as described below.
- the air heat exchangers 442 and 452 are controlled to perform a cooling operation so that dew condensation does not occur, that is, a so-called sensible heat cooling operation. Therefore, the drain piping is not connected to the sensible heat system units 404 and 405.
- the latent heat system utilization units 2 and 3 used in the latent heat load processing system of the air conditioning system 401 use the latent heat generated by the adsorption and regeneration operations of the adsorption heat exchangers 22, 23, 32, and 33. Since it can be processed, the drain pipe is not connected as in the sensible heat system use units 404 and 405. That is, a drainless system is realized as the entire air conditioning system 401 of the present embodiment!
- the air-conditioning system 401 can process an indoor latent heat load with a latent heat load processing system, and can process an indoor sensible heat load mainly with a sensible heat load processing system. Also in the air conditioning system 401 of the present embodiment, the latent heat load processing system 401 can be operated independently, similarly to the air conditioning system 1 of the first embodiment. Note that this operation is the same as the operation of the air-conditioning system 1 of the first embodiment, and a description thereof will be omitted.
- the air-conditioning system 401 can process the indoor latent heat load mainly by the latent heat load processing system, and can process the indoor sensible heat load mainly by the sensible heat load processing system.
- various driving operations will be described.
- FIG. 37 and FIG. 38 are schematic refrigerant circuit diagrams showing the operation of the air-conditioning system 401 during the drainless dehumidifying / cooling operation in the full ventilation mode.
- FIG. 39 is a control flow chart in the first drainless dehumidifying / cooling operation in the air conditioning system 401.
- FIG. 40 is a control flowchart of the air conditioning system 401 during the second drainless cooling operation.
- the operation of the air-conditioning system 1 during the drainless dehumidifying / cooling operation includes the following two operation methods.
- the first drainless dehumidifying / cooling operation method uses the evaporation pressure control valves 473 and 483 of the connection units 414 and 415 to adjust the evaporation pressure of the refrigerant in the air heat exchangers 442 and 452 to a minimum evaporation temperature value Te3 or more.
- the minimum evaporating temperature value Te3 is defined as the value within the air heat exchangers 442 and 452 such that air does not condense in the air heat exchangers 442 and 452, that is, at least the indoor air dew point.
- the second drain / dehumidifying / cooling operation method uses the refrigerant in the air heat exchangers 442 and 452 by using the evaporation pressure control valves 473 and 483 of the connection units 414 and 415. While controlling the evaporating pressure to be equal to or higher than the minimum evaporating temperature value Te3, the adsorbing operation and re-operation of the adsorbing heat exchangers 22, 32, 23, 33 of the This is an operation method that controls to change the switching time interval of the live operation.
- the operation of the latent heat load processing system of the air conditioning system 401 will be described.
- the operation required to realize the sensible heat cooling operation of the sensible heat load processing system will be described later, and the basic operation of the latent heat load processing system will be described first.
- the first operation in which the first adsorption heat exchange 22 becomes a condenser and the second adsorption heat exchange becomes an evaporator, and the second adsorption heat exchanger 23 The second operation, in which the first adsorption heat exchange becomes a condenser and the first adsorption heat exchange becomes an evaporator, is alternately repeated.
- the regeneration operation of the first adsorption heat exchangers 22 and 32 and the adsorption operation of the second adsorption heat exchangers 23 and 33 are performed in parallel.
- the four-way switching valves 21 and 31 using the latent heat system are in the first state (see the solid lines of the four-way switching valves 21 and 31 using the latent heat system in FIG. 37). Is set to In this state, the high-pressure gas refrigerant discharged from the compression mechanism 461 flows into the first adsorption heat exchangers 22 and 32 through the discharge gas communication pipe 408 and the latent heat system use side four-way switching valves 21 and 31.
- the sensible heat system use side expansion valves 441 and 451 of the sensible heat system use units 404 and 405 are different from those in the operation of only the latent heat load processing system described above in that the air heat exchanger is used to perform the cooling operation. Since the opening is adjusted to allow the refrigerant to flow through 442 and 452, a part of the high-pressure gas refrigerant compressed and discharged by the compression mechanism 461 is used by the latent heat system use units 2 and 3. /!
- the first adsorption heat exchangers 22 and 32 the heat of the adsorbent heated by the condensation of the refrigerant is desorbed, and the desorbed water is sucked into the indoor air sucked by the indoor air. Granted to RA.
- the moisture desorbed from the first adsorption heat exchangers 22, 32 is discharged to the outside as exhaust air EA through the exhaust port along with the indoor air RA.
- the moisture in the outdoor air OA is adsorbed by the adsorbent to dehumidify the outdoor air OA, and the heat of adsorption generated at that time is absorbed by the refrigerant to evaporate the refrigerant.
- the outdoor air OA dehumidified by the second adsorption heat exchangers 23 and 33 is supplied into the house through the air supply port as supply air SA (see FIG. 37, adsorption heat exchanges 22, 23, 32, and 33). See arrows on both sides).
- the latent heat system use side four-way switching valves 21 and 31 are set to the second state (see the broken line of the latent heat system use side four-way switching valves 21 and 31 in FIG. 38). In this state, the high-pressure gas refrigerant discharged from the compression mechanism 461 is supplied to the discharge gas communication pipe 408 and the latent heat system utilization side four-way switching valve 2.
- steps 2 and 32 the moisture in the outdoor air OA is adsorbed by the adsorbent to dehumidify the outdoor air OA, and the heat of adsorption generated at that time is absorbed by the refrigerant to evaporate the refrigerant. Then, the outdoor air OA dehumidified by the first adsorption heat exchangers 22 and 32 is supplied into the house through the air supply port as supply air SA (see FIG. 38, adsorption heat exchanges 22, 23, 32, and 33). See arrows on both sides).
- the target temperature value and the target temperature are set to the latent heat system use side control units 28 and 38 of the latent heat system use units 2 and 3.
- the temperature value and relative humidity value of the indoor air sucked into the unit detected by the RA intake temperature and humidity sensors 25 and 35, and the OA intake temperature and humidity sensors 26 and 36 The temperature value and the relative humidity value of the outdoor air sucked into the unit are input.
- step S41 the latent heat system use side control units 28 and 38 calculate the target value of the entguri or the absolute humidity from the target temperature value and the target relative humidity value of the indoor air, and calculate the RA suction temperature Temperature value and phase detected by humidity sensors 25 and 35 Calculates the current value of entguri or the current value of absolute humidity of air taken into the unit from indoors, and calculates the required latent heat capacity value Ah, which is the difference between the two values. Then, the value of Ah is converted into a capacity UP signal K1 for notifying the heat source side control unit 465 of whether or not the processing capacity of the latent heat system using units 2 and 3 needs to be increased.
- the capacity UP signal K1 when the absolute value of Ah is smaller than a predetermined value (that is, when the humidity of indoor air is close to the target humidity and there is no need to increase or decrease the processing capacity), the capacity UP signal If K1 is set to “0” and the absolute value of ⁇ h must be higher than the predetermined value, the processing capacity must be increased in the direction!
- the capacity UP signal K1 is set to “A”
- the absolute value of Ah is larger than the specified value in the direction in which the processing capacity must be reduced (that is, dehumidifying operation). In this case, if the indoor air humidity is lower than the target humidity and the processing capacity needs to be reduced, the capacity UP signal K1 is set to “B”.
- the three-way switching valve 462 of the heat source unit 406 is in a condensation operation state (a state in which the first port 462a and the third port 462c are connected).
- the cooling / heating switching valves 471 and 481 of the connection units 414 and 415 are in a cooling operation state (a state in which the first ports 471a and 481a are connected to the second ports 471b and 48 lb).
- the sensible heat system use side expansion valves 441 and 451 of the sensible heat system use units 404 and 405 are adjusted in opening so as to reduce the pressure of the refrigerant.
- the heat source side expansion valve 464 is open.
- the high-pressure gas refrigerant discharged from the compression mechanism 461 passes through the three-way switching valve 462, flows into the heat source side heat exchange 463, is condensed, and becomes a liquid refrigerant.
- This liquid refrigerant is sent to the sensible heat system use units 404 and 405 through the heat source side expansion valve 464, the receiver 468, and the liquid communication pipe 407. Then, the liquid refrigerant sent to the sensible heat system use units 404 and 405 is decompressed by the sensible heat system use side expansion valves 441 and 451, and then is cooled by the air heat exchangers ⁇ 442 and 452 into the unit.
- the indoor air RA cooled by heat exchange with the refrigerant in the air heat exchangers 442 and 452 is supplied indoors as supply air SA.
- the sensible heat system use side expansion valves 441 and 451 are connected to the superheat degree SH in the air heat exchangers 442 and 452, that is, the air heat exchange 442 detected by the liquid side temperature sensors 443 and 453. , 452 and the gas-side refrigerant temperature value of the air heat exchangers 442, 452 detected by the gas-side temperature sensors 454, 455 so as to reach the target superheat degree SHS.
- the opening is controlled.
- the sensible heat system use side control units 448 and 458 of the sensible heat system use units 404 and 405 send the RA intake temperature together with these target temperature values.
- the temperature value of indoor air drawn into the unit detected by the humidity sensors 445 and 455 is input.
- step S44 the control unit 448, 458 on the sensible heat system side uses the temperature difference between the target temperature value of the indoor air and the temperature value detected by the RA intake temperature sensors 445, 455 (hereinafter, the required sensible heat capacity).
- Value ⁇ the required sensible heat capacity value
- the required sensible heat capacity value ⁇ is the difference between the target indoor air temperature value and the current indoor air temperature value as described above, it must be processed by the air conditioning system 401. Must be equivalent to sensible heat load.
- the value of the required sensible heat capacity value ⁇ is converted into a capacity UP signal K2 for notifying the heat source side control unit 465 whether the processing capacity of the sensible heat system use units 404, 405 needs to be increased.
- the capacity UP signal K2 when the absolute value of ⁇ is smaller than a predetermined value (that is, when the indoor air temperature value is close to the target temperature value and there is no need to increase or decrease the processing capacity), the capacity UP signal K2 is set to “ 0, and the absolute value of ⁇ ⁇ must be higher than the predetermined value. If the processing capacity is greater in the direction! / (That is, in cooling operation!), The indoor air temperature value is equal to the target temperature. If it is necessary to increase the processing capacity higher than the value), the capacity UP signal K2 must be set to “a” and the absolute value of ⁇ must be lower than the specified value. If it is larger in the direction (that is, if the indoor air temperature value is lower than the target temperature value in cooling operation and the processing capacity needs to be reduced), the capacity UP signal K2 is set to “b”.
- step S45 the sensible heat system utilization side control units 448 and 458 change the value of the target superheat degree SHS according to the value of the required sensible heat capacity value ⁇ .
- the target superheat degree SHS is increased and the air heat exchanger 442
- the degree of opening of the sensible heat system utilization side expansion valves 441 and 451 is controlled so as to reduce the amount of heat exchanged between the refrigerant and air in 452.
- the heat source side control unit 465 transmits the capability UP signal K1 of the latent heat system use units 2 and 3 transmitted from the latent heat system use side control units 28 and 38 to the heat source side control unit 465, and the sensible heat
- the target condensation temperature TcS and the target evaporation temperature TeS are calculated using the capacity UP signal K2 of the sensible heat system utilization units 404 and 405 transmitted from the system utilization side control units 448 and 458 to the heat source side control unit 465. I do.
- the target condensation temperature value TcS is obtained by adding the capacity increase signal K1 of the latent heat system use units 2 and 3 and the capacity increase signal K2 of the sensible heat system use units 404 and 405 to the current target condensation temperature value.
- the target evaporation temperature TeS is calculated by subtracting the capacity increase signal K1 of the latent heat system use units 2 and 3 and the capacity increase signal K2 of the sensible heat system use units 404 and 405 from the current target evaporation temperature value. Is calculated. As a result, when the value of the capacity-up signal K1 is "A" or when the value of the capacity-up signal K2 is "a", the target condensing temperature TcS increases and the target evaporation temperature TeS decreases.
- a system condensing temperature value Tc and a system evaporating temperature value Te which are values corresponding to the measured values of the condensing temperature and the evaporating temperature of the entire air conditioning system 1, are calculated.
- the system condensation temperature value Tc and the system evaporation temperature value Te are the suction pressure value of the compression mechanism 461 detected by the suction pressure sensor 466 and the discharge pressure value of the compression mechanism 461 detected by the discharge pressure sensor 467, respectively. It is calculated by converting to the saturation temperature of the refrigerant at these pressure values.
- the temperature difference ATc of the target condensation temperature value TcS with respect to the system condensation temperature value Tc and the target The temperature difference ATe of the evaporation temperature value TeS is calculated, and these temperature differences are divided to determine whether the operating capacity of the compression mechanism 461 needs to be increased or decreased and the width of the increase or decrease.
- the operating capacity of the compression mechanism 461 is controlled to perform system control to approach the target relative humidity of indoor air. For example, when the temperature difference ATc force is also a positive value obtained by subtracting the temperature difference ATe, the operating capacity of the compression mechanism 461 is increased. Conversely, when the value obtained by subtracting the temperature difference ATe from the temperature difference ATc is a negative value. Is controlled to reduce the operating capacity of the compression mechanism 461.
- the latent heat load (required latent heat treatment capacity, equivalent to Ah) that must be treated as the entire air conditioning system 401 and the air conditioning system 1 as a whole must be treated.
- the sensible heat load (corresponding to the required sensible heat treatment capacity, ⁇ T) must be a latent heat load processing system (specifically, units 2 and 3 using the latent heat system) and a sensible heat load processing system (specifically, Is processed using the sensible heat system utilization units 404, 405).
- the increase / decrease in the processing capacity of the latent heat load processing system and the increase / decrease in the processing capacity of the sensible heat load processing system are calculated by calculating the required latent heat treatment capacity value ⁇ h and the required sensible heat treatment capacity value ⁇ T. Since the operating capacity of the compression mechanism 461 is controlled on the basis of this, the processing of the latent heat load in the latent heat load processing system having the adsorption heat exchangers 22, 23, 32, and 33 and the control of the latent heat load in the air heat exchangers 442 and 452 are performed. It is possible to perform both the processing of the sensible heat load and the processing of the heat load processing system. Thereby, even when the heat source of the latent heat load processing system and the heat source of the sensible heat load processing system are shared as in the air conditioning system 401 of the present embodiment, the operation capacity of the compression mechanism constituting the heat source is controlled well. be able to.
- the latent heat treatment for mainly processing the indoor latent heat load is performed in the latent heat load processing system (that is, the latent heat system use units 2 and 3).
- the heat load processing system that is, the sensible heat system use units 404 and 405
- a sensible heat cooling operation for processing only the indoor sensible heat load is performed.
- the sensible heat cooling operation of the sensible heat load processing system is realized by performing the following system control using the evaporation pressure control valves 473 and 483 of the connection units 414 and 415. Te ru.
- step S46 the sensible heat system utilization side control units 448 and 458 • Calculate the dew point temperature from the temperature value and relative humidity value of the indoor air drawn into the unit detected by the humidity sensors 445 and 455 so that the air heat exchangers 442 and 452 do not condense air. That is, the lowest evaporation temperature value Te3 of the refrigerant flowing through the air heat exchangers 442 and 452 is calculated so as to be at least equal to or higher than the dew point temperature.
- step S47 the minimum evaporation temperature value Te3 transmitted from the sensible heat system utilization side control units 448, 458 to the connection unit control units 472, 482 is the saturation pressure corresponding to this temperature value Te3. Convert to the minimum evaporation pressure value P3. Then, in step S48, the minimum evaporation pressure value P3 is compared with the refrigerant pressure value in the air heat exchangers 442, 452 detected by the evaporation pressure sensors 474, 484. The openings of the evaporation pressure control valves 473 and 483 are adjusted so that the detected refrigerant pressure value in the air heat exchangers 442 and 452 becomes equal to or higher than the minimum evaporation pressure value P3.
- the refrigerant pressure in the air heat exchangers 442, 452 detected by the evaporation pressure sensors 474, 484 The value is adjusted by the evaporating pressure control valves 473 and 483 so that the value is equal to or higher than the minimum evaporating pressure value P3 corresponding to the dew point temperature of indoor air, so that sensible heat cooling operation can be realized.
- the evaporation temperature of the air heat exchangers 442 and 452 of the sensible heat load treatment system of the air conditioning system 401 is lower than the dew point temperature (ie, lower than the minimum vaporization temperature Te3).
- the connection unit controls 414 and 415 set the minimum evaporation pressure to a value higher than the minimum evaporation pressure value P3 when the condensation was detected.
- the pressure value P3 is corrected, the sensible heat system use side control units 448 and 458 close the sensible heat system use side expansion valves 441 and 451, and the sensible heat system use side control units 448 and 458 control the heat source side.
- FIG. 37, 38, and 40 the operation during the second drainless dehumidifying / cooling operation will be described with reference to FIGS. 37, 38, and 40.
- FIG. 37, 38, and 40 the operation during the second drainless dehumidifying / cooling operation will be described with reference to FIGS. 37, 38, and 40.
- the processing of the indoor latent heat load A sensible heat cooling operation is performed in the sensible heat load processing system, in which only the indoor sensible heat load is processed using the evaporation pressure control valves 473 and 483.
- the latent heat treatment capacity (necessary latent heat treatment capacity, equivalent to Ah) that must be processed by the latent heat load processing system and the sensible heat load processing system, and the latent heat load processing system and the sensible heat load processing system must process the latent heat.
- the sensible heat treatment capacity (required sensible heat treatment capacity, equivalent to ⁇ ⁇ ) is processed using the latent heat load processing system and the sensible heat load processing system.
- the increase or decrease in the processing capacity of the latent heat load processing system and the sensible heat load processing system is mainly performed by controlling the operating capacity of the compression mechanism 461.
- the latent heat load processing by the latent heat load processing system of the air conditioning system 1 as shown in FIG. 5, the first adsorption heat exchangers 22 and 32 and the second adsorption heat exchanger 23 constituting the latent heat load processing system are used. Since the sensible heat treatment is performed not only by the latent heat treatment but also by the adsorption operation or the regeneration operation of 33, the sensible heat treatment is performed together with the latent heat treatment.
- the processing capacity of the sensible heat treatment performed together with the latent heat treatment in the latent heat load processing system is the generated sensible heat treatment capacity
- the sensible heat load that must be processed by the sensible heat load processing system is calculated from the required latent heat treatment capacity. That's the amount you deducted.
- the second drainless dehumidifying / cooling operation method the following system control is performed in consideration of the fact that the latent heat load processing system of the air conditioning system 401 performs processing of the sensible heat load. It is carried out.
- the method of the second drainless dehumidifying / cooling operation is the same as the control flow in the first operation method except for steps S49-S52 which are specific to this operation method (that is, steps S41-S48). Therefore, the description is omitted.
- step S49 the switching time interval between the adsorption operation and the regeneration operation in the adsorption heat exchangers 22 and 23 and the adsorption heat exchangers 32 and 33 is set to the sensible heat priority mode (for example, If time D) in FIG. 5 and the capability UP signal K2 is “b” (when the required sensible heat treatment capability in the sensible heat system utilization side units 404 and 405 decreases), in step S51, Change the switching time interval to latent heat priority (for example, time C in Fig. 5). Conversely, in the case of other conditions, the process proceeds to step S50.
- the sensible heat priority mode for example, If time D) in FIG. 5 and the capability UP signal K2 is “b” (when the required sensible heat treatment capability in the sensible heat system utilization side units 404 and 405 decreases
- step S51 Change the switching time interval to latent heat priority (for example, time C in Fig. 5). Conversely, in the case of other conditions, the process proceeds to step S50.
- step S50 the switching time interval between the adsorption operation and the regeneration operation in the adsorption heat exchangers 22 and 23 and the adsorption heat exchangers 32 and 33 is the latent heat priority (for example, time C in Fig. 5), and If the capacity UP signal K2 is “a” (when the required sensible heat treatment capacity in the sensible heat system use side units 404 and 405 increases), in step S52, the switching time interval is given priority to sensible heat ( For example, by changing to the time D) in FIG. 5, the sensible heat treatment capacity of the latent heat load processing system can be increased.
- the latent heat priority for example, time C in Fig. 5
- the required sensible heat treatment capacity value ⁇ increases, and if it is necessary to increase the sensible heat treatment capacity in the sensible heat load treatment system of the air conditioning system 1, the latent heat system utilization unit 2, Latent heat treatment performed in the adsorption heat exchangers 22, 32, 23, and 33 by increasing the switching time interval between the adsorption and regeneration operations of the adsorption heat exchangers 22, 32, 23, and 33
- the sensible heat treatment capacity of the latent heat load treatment system is increased by reducing the capacity and increasing the sensible heat treatment capacity. In other words, the sensible heat treatment capacity ratio can be increased. Even if the air temperature increases, the air heat exchangers 42 and 52 of the sensible heat load processing system are operated so that moisture in the air does not condense, and only the indoor sensible heat load is processed. It is possible to follow the change of power.
- the evaporation temperature of the air heat exchangers 442 and 452 of the sensible heat load processing system of the air conditioning system 401 is lower than the dew point temperature.
- the connection unit control units 472 and 482 determine the minimum evaporating pressure value P3 when the dew is detected.
- the value of the minimum evaporating pressure value P3 is corrected so that the pressure value becomes higher, or the sensible heat system use side control units 448 and 458 close the sensible heat system use side expansion valves 441 and 451, or
- the heat-system-side control units 448 and 458 transmit a signal to the heat-source-side control unit 465 to notify that the dew has been detected, and the heat-source-side control unit 465 stops the compression mechanism 461, whereby the air heat exchange 442 is performed. , 452 can be reliably prevented.
- FIG. 41 is a schematic refrigerant circuit diagram showing the operation of the air conditioning system 401 when the first drainless system is started.
- FIG. 42 is an air line diagram showing the state of indoor air when the drainless system of the air conditioning system 401 is started.
- FIG. 43 and FIG. 44 are schematic refrigerant circuit diagrams showing the operation of the air conditioning system 401 when the second drainless system is started.
- the first drainless system activation method is an operation method in which processing of the indoor latent heat load by the latent heat load processing system is given priority over processing of the indoor sensible heat load by the sensible heat load processing system of the air conditioning system 401.
- the second method of starting the drainless system is similar to the first method of starting the drainless system.
- the processing of the indoor latent heat load by the latent heat load processing system is more effective than the processing of the indoor sensible heat load by the sensible heat load processing system.
- the sensible heat load processing system of the air conditioning system 401 is stopped (that is, the sensible heat use side expansion valves 441 and 451 of the sensible heat use units 404 and 405 are activated).
- the latent heat load processing system starts up and dehumidification operation is performed.
- the operation during the dehumidifying operation of the latent heat load processing system is the same as the operation during the drainless dehumidifying cooling operation described above (however, the switching time interval is fixed to the time C of the latent heat priority mode), and therefore the description thereof is omitted. I do.
- the sensible heat load processing system uses the sensible heat system use side control units 448 and 458 to determine the indoor air temperature value and relative humidity value (specifically, the RA value of the latent heat system use units 2 and 3).
- Inhalation temperature ⁇ Humidity sensor 25 35 ° RA inhalation of sensible heat system use unit 404, 405 (The temperature and relative humidity values detected by the temperature and humidity sensors 445 and 455) are used to calculate the indoor air dew point temperature or absolute humidity value, and the actual measured value of the indoor air dew point temperature or absolute humidity is shown in Fig. 25.
- the indoor air dew point Maintain the stop state until the temperature value or the absolute humidity value falls below the target dew point temperature value or the target absolute humidity value to prevent moisture in the air from condensing in the air heat exchangers 442 and 452 immediately after startup. I have to.
- the dew point temperature or absolute humidity value calculated from the target temperature value and target humidity value input to the remote controllers 411 and 412, and the RA suction temperature of the latent heat system utilization units 2 and 3 detected at system startup and the humidity Sensor 25, 35 RA RA suction temperature of sensible heat system unit 404, 405 'Temperature value and relative humidity value detected by humidity sensor 445, 455 Force is also about halfway between calculated dew point temperature value or absolute humidity value An appropriate dew point temperature value or absolute humidity value is set.
- the sensible heat load processing system is started (specifically, the sensible heat system of the sensible heat system use units 404 and 405).
- the use-side expansion valves 441 and 451 are controlled), and the above-described drainless dehumidifying / cooling operation is performed to cool the indoor air temperature to the target temperature.
- the latent heat load processing system since the processing of the indoor latent heat load by the latent heat load processing system is given priority over the processing of the indoor sensible heat load by the sensible heat load processing system, the latent heat load processing system
- the sensible heat load treatment system allows the sensible heat treatment to be performed after the indoor air humidity is sufficiently reduced by performing the latent heat treatment.
- a latent heat load processing system including latent heat system utilization units 2 and 3 having adsorption heat exchanges 22, 23, 32, and 33 for mainly processing indoor latent heat loads, and air heat exchangers 442 and 452 are provided.
- the latent heat load processing system When an operation command is issued from the remote controllers 411 and 412, the latent heat load processing system is started and the dehumidification operation is performed with the sensible heat load processing system stopped in the same manner as when the first drainless system is started.
- the dehumidifying operation is performed in the circulation mode instead of the full ventilation mode.
- the control of the latent heat system refrigerant circuit 410 of the latent heat load processing system is the same as the operation during the drainless dehumidifying / cooling operation (however, the switching time interval is fixed to the time C of the latent heat priority mode).
- the flow of air in the latent heat system use units 2 and 3 of the latent heat load processing system is controlled by operating the latent heat system use side four-way switching valves 21 and 31, the air supply fan, exhaust fan, damper, etc.
- RA is sucked into the unit through the inside air inlet and is supplied indoors as supply air SA through the air inlet
- outdoor air OA is sucked into the unit through the outside air inlet and discharged outside as EA through the outlet. Operation is performed.
- the outdoor air is dehumidified while circulating the indoor air (that is, the dehumidifying operation in the circulation mode), whereby the outdoor air is reduced.
- the indoor humidity may increase when outdoor air is supplied, such as in a humid condition
- dehumidification can be performed while circulating indoor air.
- the absolute humidity value can be reached, and the sensible heat load can be processed by the sensible heat load processing system.
- the values of the dew point temperature and the absolute humidity of the indoor air are determined by the indoor temperature. It may be close to the target air dew point temperature or target absolute humidity value. In such a case, since it is not necessary to start the drainless system, the operation at the time of starting the drainless system may be omitted and the operation may be shifted to the normal operation!
- the value of the target dew point temperature of the indoor air is set before starting the operation for preferentially processing the indoor latent heat load as described above.
- the dew point temperature difference between the dew point temperature of Judgment whether the temperature is below the target temperature (e.g., whether the target dew point temperature has been reached) and the dew point temperature difference between the indoor air target dew point temperature and the indoor air dew point temperature is equal to or less than the predetermined dew point temperature difference In such a case, the operation at the time of starting the drainless system can be prevented from being performed.
- the indoor latent heat load as described above is preferentially processed when the drainless system is started.
- the specified absolute humidity difference for example, If the absolute humidity difference between the target absolute humidity of indoor air and the absolute humidity of indoor air is less than or equal to the specified absolute humidity difference, do not perform the operation when the drainless system starts. What should I do?
- the air conditioning system 401 of the present embodiment has the following features in addition to the features of the air conditioning system 1 of the first embodiment.
- the air conditioning system 401 of the present embodiment includes a latent heat system use side refrigerant circuit 410a, which can be discharged outdoors by absorbing or desorbing moisture in the air in the adsorption heat exchangers 22, 23, 32, and 33.
- a latent heat load processing system that mainly processes indoor latent heat loads including 410b, and a sensible heat system that can perform heat exchange between refrigerant and air so that moisture in the air does not dew in the air heat exchangers 442 and 452
- the system includes a sensible heat load processing system including only the use side refrigerant circuits 410c and 41 Od and processing only the indoor sensible heat load.
- the air conditioning system 401 is a latent heat system use unit 2 having latent heat system use side refrigerant circuits 410a, 410b, and a sensible heat system use unit 404, 405 having sensible heat system use side refrigerant circuits 410c, 410d.
- the drainless system does not require a drain pipe inside.
- the sensible heat load processing system Even when the heat treatment capacity value ⁇ increases and the sensible heat treatment system needs to increase the sensible heat treatment capacity, the evaporation temperature of the air heat exchangers 442 and 452 is limited by the dew point temperature of the indoor air. Therefore, the sensible heat treatment capacity cannot be increased.
- the latent heat load processing system when the required sensible heat treatment capacity value ⁇ becomes large and the sensible heat treatment capacity of the sensible heat load treatment system needs to be increased, the latent heat load processing system is configured.
- the latent heat treatment capacity of the adsorption heat exchangers 22, 23, 32, 33 by increasing the switching time interval between the adsorption and regeneration operations of the adsorption heat exchangers 22, 23, 32, 33
- the sensible heat treatment capacity is increased, that is, the ratio of the sensible heat treatment capacity of the latent heat load processing system is increased, so that the sensible heat treatment capacity of the latent heat load processing system can be increased.
- the sensible heat load treatment system is operated so that moisture in the air does not condense, and only the indoor sensible heat load is processed. While following the fluctuation of the sensible heat treatment capacity
- the evaporation pressure is set based on the dew point temperature of the indoor air, for example, so that the evaporation temperature of the refrigerant in the air heat exchangers 442 and 452 does not become lower than the dew point temperature of the indoor air.
- the control valves 473 and 483 it is possible to prevent moisture in the air from condensing on the surfaces of the air heat exchangers 442 and 452, thereby suppressing the generation of drain water in the air heat exchangers 442 and 452.
- the control value of the refrigerant evaporation pressure in the air heat exchange 442, 452 by the evaporation pressure control valves 473, 483 is not the dew point temperature but the air heat measured by the evaporation pressure sensors 474, 484. Since the evaporating pressure of the refrigerant in the exchangers 442 and 452 is used, control responsiveness can be improved as compared with the case where the evaporating pressure of the refrigerant is controlled using the dew point temperature. [0158] (C)
- the dew sensors 446 and 456 reliably detect the dew condensation in the air heat exchangers 442 and 452, and when the dew is detected, the dew-point temperature is calculated as the minimum evaporation pressure value.
- P3 it is possible to change the evaporation pressure of the refrigerant in the air heat exchange 442, 452, to stop the compression mechanism 461, to use the sensible heat system use side expansion valves of the sensible heat system use units 404, 405. Since the 441 and 451 are closed, dew condensation in the air heat exchangers 442 and 452 can be reliably prevented.
- the processing of the indoor latent heat load by the latent heat load processing system is given priority over the processing of the indoor sensible heat load by the sensible heat load processing system.
- the sensible heat load processing system can perform the sensible heat treatment.
- the temperature is kept constant until the dew point temperature of the indoor air falls below the target dew point temperature value or until the absolute humidity of the indoor air falls below the target absolute humidity value. Stop processing the indoor sensible heat load by the heat load processing system, and perform only the latent heat treatment by the latent heat load processing system, so as to shift to the sensible heat load processing by the sensible heat load processing system as soon as possible. Can be.
- the latent heat load processing system having the adsorption heat exchangers 22, 23, 32, and 33 mainly for processing the indoor latent heat load, and the air heat exchangers 442, 452 having the air heat exchangers 442, 452,
- the air conditioning system 1 combined with a sensible heat load processing system that operates only to treat indoor sensible heat load by operating as if moisture in the air did not condense, the dew point temperature of indoor air Even when the system is started under high conditions, the sensible heat load can be promptly processed while preventing dew condensation in the air heat exchangers 442 and 452.
- the air conditioning system 401 of the present embodiment when the system is Of the adsorption heat exchangers 22, 23, 32, and 33 are discharged outside after passing through the adsorption heat exchanger performing the regeneration operation, and the indoor air is absorbed by the adsorption heat exchangers 22, 23, 32, and 33.
- the indoor air temperature and relative humidity detected by the RA intake temperature of the sensible heat system utilization units 404 and 405 and the humidity sensors 445 and 455 determine the indoor air temperature.
- the dew point temperature of the air heat exchangers 442 and 452 is used to calculate the minimum evaporation temperature Te3 of the refrigerant, which is used for system control.As shown in Figure 45, the sensible heat system IJ
- the dew point sensors 447 and 457 are provided in the units 404 and 405, and the dew point temperature detected by the dew point sensors 447 and 457 is used for system control.
- the sensible heat system use units 404 and 405 and the connection units 414 and 415 that constitute the sensible heat load processing system are separate units, and are shown in FIG.
- the cooling / heating switching valves 471 and 481 of the connection units 414 and 415, the evaporating pressure control valves 473 and 483, and the evaporating pressure sensors 474 and 484 may be incorporated in the sensible heat system utilization units 404 and 405.
- the connection unit control units 472 and 482 provided in the connection units 414 and 415 are omitted, and the sensible heat system use side control units 488 and 458 also have the function of the connection unit control units 472 and 482. Become.
- a latent heat load processing system is configured.
- the latent heat system use side refrigerant circuits 410a and 410b are built in the latent heat system use units 2 and 3, and the sensible heat system use side refrigerant circuits 410c and 410d constituting the sensible heat load processing system are used in the sensible heat system use unit 404.
- 405 and the connection units 414, 415, and the latent heat system use units 2, 3 and the sensible heat system use units 404, 405 and the connection units 414, 415 are installed separately.
- the latent heat system use side refrigerant circuits 510a and 51 Ob forming the latent heat load processing system and the sensible heat system use side refrigerant circuits 510c and 510d forming the sensible heat load processing system. And, make up the unit IJ units 502 and 503 together!
- the latent heat system use units 2 and 3 having the latent heat system use side refrigerant circuits 410a and 410b indoors and the sensible heat system use side refrigerant are provided.
- the installation work of the unit-size compact drier unit can be saved. Can be planned.
- the RA suction temperature sensors 445 and 455 provided in the sensible heat system use units 404 and 405 and the connection units 414 and 415 of the air conditioning system 401 of the third embodiment described above, and the sensible heat system use side control are used.
- the units 448 and 458 and the connection unit control units 472 and 482 are omitted, and the latent heat system use side control units 528 and 538 also have the functions of the sensible heat system use side control units 448 and 458 and the connection unit control units 472 and 482. Will be done.
- the latent heat system use side refrigerant circuits 510a and 510b and the sensible heat system use side refrigerant circuits 510c and 510d constituting the sensible heat load processing system and the power integrated use units 502 and 503 are provided.
- it is dehumidified or humidified in the adsorption heat exchangers 522, 523, 532, 533, that is, the latent heat system use side refrigerant circuits 510a, 51 Ob as shown in Fig. 48 (that is, latent heat treatment).
- Air can be further cooled or heated (ie, sensible heat treatment) (adsorption heat exchange 522, 52 in FIG. 48).
- FIG. 49 is a schematic refrigerant circuit diagram of an air-conditioning system 601 according to a fourth embodiment of the present invention.
- the air conditioning system 601 is an air conditioning system that processes a latent heat load and a sensible heat load inside a building or the like by performing a vapor compression refrigeration cycle operation.
- the air conditioning system 601 is a so-called separate type multi-air conditioning system, and mainly includes a plurality of (two in the present embodiment) latent heat system utilization units 2 and 3 connected to each other in parallel.
- connection pipes 607, 608, and 609 for connecting the heat source unit 606 with the heat source unit 606.
- the heat source unit 606 functions as a common heat source for the latent heat system use units 2 and 3 and the sensible heat system use units 604 and 605.
- latent heat system use units 2 and 3 have the same configuration as the latent heat system use units 2 and 3 of the first embodiment, description of each unit is omitted here.
- the sensible heat system use units 604 and 605 are provided with the dew condensation sensors 646 and 656 and the RA suction temperature / humidity sensors 645 and 655, respectively. Although different from 304 and 305, the other configuration is the same as that of the sensible heat system use units 304 and 305 of the second embodiment. Only the reference numerals indicating the units of the units 304 and 305 are changed to those in the 600s, and the description of the units is omitted here.
- the dew condensation sensors 646 and 656 are provided so as to function as a dew detection mechanism for detecting the presence or absence of dew in the air heat exchangers 642 and 652. Note that, in the embodiment, the force using the dew sensors 646 and 656 is not limited to this.
- the float switch may be provided in place of the dew sensor, as long as it functions as a dew detection mechanism.
- the RA intake temperature / humidity sensors 645 and 655 are temperature / humidity sensors that detect the temperature and relative humidity of the indoor air RA sucked into the unit.
- the heat source unit 606 has the same configuration as the heat source unit 306 of the second embodiment, all the symbols indicating the respective parts of the heat source unit 306 of the second embodiment are changed only to symbols of the 600s. Description of each part is omitted.
- connection units 614 and 615 mainly include evaporating pressure control valves 673 and 683, evaporating pressure sensors 674 and 684, and connection unit control units 672 and 682 that control the operation of each unit constituting the connection units 614 and 615.
- the evaporating pressure control valves 673 and 683 control the evaporating pressure of the refrigerant in the air heat exchange 644 and 652 when the air heat exchange 642 and 652 of the sensible heat system utilization unit 604 and 605 function as a refrigerant evaporator. It is an electric expansion valve provided to function as a pressure adjustment mechanism.
- the evaporation pressure sensors 674 and 684 are pressure sensors provided to function as pressure detection mechanisms for detecting the pressure of the refrigerant in the air heat exchangers 642 and 652.
- the sensible heat system utilization units 604 and 605 of the present embodiment are similar to the sensible heat system utilization units 504 and 604 of the third embodiment in that the air heat exchange 642 and 652 are used when performing the dehumidifying and cooling operation. Is controlled to perform cooling operation so that dew condensation does not occur, that is, so-called sensible heat cooling operation. Therefore, the drain piping is not connected to the sensible heat system utilization units 604 and 605.
- the latent heat system utilization units 2 and 3 used in the latent heat load treatment system of the air conditioning system 601 operate as the adsorption operation of the adsorption heat exchangers 22, 23, 32, and 33. Since the latent heat treatment can be performed by the regenerating operation, the drain pipe is not connected as in the case of the sensible heat system utilization units 404 and 405. That is, a drainless system is realized as the entire air conditioning system 401 of the present embodiment!
- the operation of the air-conditioning system 601 according to the present embodiment is the same as the operation of the air-conditioning system 601 according to the third embodiment.
- the 601 also has the same features as those of the air conditioning system 401 of the third embodiment.
- the indoor air temperature and relative humidity detected by the RA intake temperature of the sensible heat system utilization units 604 and 605 and the humidity sensors 645 and 655 are used to determine the indoor air temperature.
- the dew-point temperature of the air heat exchangers 642 and 652 is used to calculate the minimum evaporation temperature Te3 of the refrigerant, which is used for system control.
- the sensible heat system IJ Units 604 and 605 are provided with dew point sensors 647 and 657, and the dew point temperature detected by the dew point sensors 647 and 657 is used for system control.
- the sensible heat system use units 604 and 605 and the connection units 614 and 615 constituting the sensible heat load processing system are separate units.
- the evaporation pressure control valves 673 and 683 and the evaporation pressure sensors 674 and 684 of the connection units 614 and 615 may be incorporated in the units 604 and 605 for the S sensible heat system IJ.
- the connection cut control units 672 and 682 provided in the connection units 614 and 615 are omitted, and the sensible heat system use side control units 648 and 658 also have the functions of the connection unit control units 672 and 682. It will be.
- the latent heat system use side refrigerant circuits 610a and 610b constituting the latent heat load treatment system are built in the latent heat system use units 2 and 3, and the sensible heat load treatment system is used.
- the constituent sensible heat system use side refrigerant circuits 610c and 610d are built in the sensible heat system use units 604 and 605 and the connection units 614 and 615, although the latent heat system use units 2 and 3 and the sensible heat system use units 604 and 605 and the connection units 614 and 615 are separately installed, as in the air conditioning system 7001 of this modification shown in FIG.
- the latent heat system use units 2 and 3 having the latent heat system use side refrigerant circuits 610a and 610b indoors and the sensible heat system use side refrigerant are provided.
- the installation work of the unit size compact shunting unit can be saved. Can be planned.
- the RA suction temperature sensors 645 and 655 provided in the sensible heat system use units 604 and 605 and the connection units 614 and 615 of the air conditioning system 601 of the fourth embodiment described above, and the sensible heat system use side control Units 648 and 658 and connection unit control units 672 and 682 are omitted, and latent heat system use side control units 728 and 738 have the functions of sensible heat system use side control units 648 and 658 and connection unit control units 672 and 682. Will be done.
- the adsorption heat exchange 722, 723, 732, 733 that is, the latent heat system utilization side refrigerant circuits 710a, 710b Only operations that supply dehumidified or humidified (ie, latent heat-treated) air indoors may be performed.
- the latent heat system use side refrigerant circuits 710a and 710b and the sensible heat system use side refrigerant circuits 710c and 710d that constitute the sensible heat load processing system and the 1S integrated use units 702 and 703 are provided.
- it is dehumidified or humidified in the adsorption heat exchangers 722, 723, 732, 733, that is, the latent heat system use side refrigerant circuits 710a, 71 Ob, as shown in Fig. 53 (that is, latent heat treatment).
- Air can be further cooled or heated (ie, sensible heat treatment) (see arrows on both sides of adsorption heat exchange 722, 723, 732, 733 in FIG. 53), for example,
- sensible heat treatment along with the latent heat load by the adsorption heat exchange 722, 723, 732, 733, even if the temperature is changed to a temperature suitable for the indoor target air temperature after some treatment, Leave the air indoors Instead of blowing out, it is also possible to perform sensible heat treatment with the air heat exchangers 742 and 752 to reach a temperature suitable for the target indoor air temperature, and then to blow out indoors.
- FIG. 54 is a schematic refrigerant circuit diagram of an air-conditioning system 801 according to a fifth embodiment of the present invention.
- the air conditioning system 801 is an air conditioning system that processes a latent heat load and a sensible heat load inside a building or the like by performing a vapor compression refrigeration cycle operation.
- the air conditioning system 801 is a so-called separate type multi-air conditioning system, and includes a latent heat load processing system 901 mainly for processing indoor latent heat loads, and a sensible heat load processing system 1001 for mainly processing indoor sensible heat loads. It has.
- the latent heat load processing system 901 is a so-called separate type multi-air conditioning system, and mainly includes a plurality (two in the present embodiment) of latent heat system use units 902 and 903 and a latent heat system heat source unit 906. And latent heat system communication pipes 907 and 908 for connecting the latent heat system use units 902 and 903 and the latent heat system heat source unit 906.
- the latent heat system use units 902 and 903 mainly constitute a part of the latent heat system refrigerant circuit 910, and are the same as the latent heat system use side refrigerant circuits 910a and 910a of the first embodiment. , 910b.
- reference numerals of the 920s and 930s are attached instead of the reference numerals of the 20s and 30s indicating the parts of the latent heat system utilization units 2 and 3 of the first embodiment. Explanation of each part is omitted.
- the latent heat system heat source unit 906 mainly forms a part of the latent heat system refrigerant circuit 910, and includes a latent heat system heat source side refrigerant circuit 910c.
- the latent heat system heat source side refrigerant circuit 910c mainly includes a latent heat system compression mechanism 961 and a latent heat system accumulator 962 connected to the suction side of the latent heat system compression mechanism 961.
- the latent heat system utilization units 902 and 903 are connected in parallel via 8.
- the sensible heat load processing system 1001 is a so-called separate type multi-air conditioning system, and mainly includes a plurality of (two in this embodiment) sensible heat system use units 1002 and 1003 and a sensible heat 1006, sensible heat system connecting pipes 1007, 1008 connecting the sensible heat system IJ units 1002, 1003 and the sensible heat system heat source unit 1006
- the sensible heat system utilization units 1002 and 1003 mainly constitute a part of the sensible heat system refrigerant circuit 1010, and are similar to the sensible heat system utilization side refrigerant circuits 10c and 10d of the first embodiment. It is provided with a system use side refrigerant circuit 1010a, 1010b.
- the reference numerals of the 1020s and 1030s are attached instead of the reference numerals of the 40s and 50s indicating the parts of the sensible heat system utilization units 4 and 5 of the first embodiment. The description of each part is omitted.
- the sensible heat system heat source unit 1006 mainly forms a part of the sensible heat system refrigerant circuit 1010, and includes a sensible heat system heat source side refrigerant circuit 1010c.
- This sensible heat system heat source side refrigerant circuit 1010c mainly includes a sensible heat system compression mechanism 1061 and a sensible heat system accumulator 1062 connected to the suction side of the sensible heat system compression mechanism 1061.
- Sensible heat system utilization units 1002 and 1003 are connected in parallel via pipes 1007 and 1008.
- the air-conditioning system 801 of the present embodiment includes a heat source in each of the latent heat load processing system 901 and the sensible heat load processing system 1001. (Specifically, the latent heat system heat source unit 906 and the sensible heat system heat source unit 1006) are provided, so the number of heat sources increases compared to the air conditioning system of the first to fourth embodiments.
- Latent heat load processing system including adsorption heat exchange 922, 923, 932, 933 Since one heat source can be integrated, the cost increase and maintenance that occur when installing multiple air conditioners using adsorption heat exchange The number of locations can be suppressed.
- the dew condensation sensor is provided in the sensible heat system using unit, but the sensible heat cooling operation of the sensible heat load processing system must be performed reliably. If it can be done, it is not always necessary to provide it.
- an air conditioner using an adsorption heat exchanger is combined with an air conditioner using an air heat exchanger. It is possible to suppress the cost increase and the increase in the number of maintenance points, which occur when installing by installing.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Human Computer Interaction (AREA)
- Central Air Conditioning (AREA)
- Air Conditioning Control Device (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05727189.2A EP1739366B1 (en) | 2004-03-31 | 2005-03-23 | Air conditioning system |
AU2005230498A AU2005230498B2 (en) | 2004-03-31 | 2005-03-23 | Air conditioning system |
US10/591,060 US7886556B2 (en) | 2004-03-31 | 2005-03-23 | Air conditioning system |
ES05727189.2T ES2636539T3 (es) | 2004-03-31 | 2005-03-23 | Sistema de acondicionamiento de aire |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004-105173 | 2004-03-31 | ||
JP2004105173 | 2004-03-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005098320A1 true WO2005098320A1 (ja) | 2005-10-20 |
Family
ID=35125160
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/005235 WO2005098320A1 (ja) | 2004-03-31 | 2005-03-23 | 空気調和システム |
Country Status (7)
Country | Link |
---|---|
US (1) | US7886556B2 (ja) |
EP (1) | EP1739366B1 (ja) |
KR (1) | KR100720811B1 (ja) |
CN (1) | CN100445652C (ja) |
AU (1) | AU2005230498B2 (ja) |
ES (1) | ES2636539T3 (ja) |
WO (1) | WO2005098320A1 (ja) |
Cited By (1)
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CN102261764A (zh) * | 2011-05-13 | 2011-11-30 | 山东大学 | 一种复合制冷*** |
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- 2005-03-23 AU AU2005230498A patent/AU2005230498B2/en not_active Ceased
- 2005-03-23 EP EP05727189.2A patent/EP1739366B1/en not_active Not-in-force
- 2005-03-23 CN CNB2005800061841A patent/CN100445652C/zh not_active Expired - Fee Related
- 2005-03-23 WO PCT/JP2005/005235 patent/WO2005098320A1/ja active Application Filing
- 2005-03-23 US US10/591,060 patent/US7886556B2/en not_active Expired - Fee Related
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Also Published As
Publication number | Publication date |
---|---|
US7886556B2 (en) | 2011-02-15 |
KR20060132916A (ko) | 2006-12-22 |
AU2005230498A1 (en) | 2005-10-20 |
EP1739366A4 (en) | 2009-08-12 |
AU2005230498B2 (en) | 2008-08-14 |
US20070180851A1 (en) | 2007-08-09 |
CN1926387A (zh) | 2007-03-07 |
CN100445652C (zh) | 2008-12-24 |
ES2636539T3 (es) | 2017-10-06 |
EP1739366B1 (en) | 2017-07-05 |
KR100720811B1 (ko) | 2007-05-21 |
EP1739366A1 (en) | 2007-01-03 |
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