WO2015027570A1 - Appareil de pompe à chaleur intégré composé pour tour source de chaleur - Google Patents

Appareil de pompe à chaleur intégré composé pour tour source de chaleur Download PDF

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Publication number
WO2015027570A1
WO2015027570A1 PCT/CN2013/087176 CN2013087176W WO2015027570A1 WO 2015027570 A1 WO2015027570 A1 WO 2015027570A1 CN 2013087176 W CN2013087176 W CN 2013087176W WO 2015027570 A1 WO2015027570 A1 WO 2015027570A1
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WIPO (PCT)
Prior art keywords
solution
heat exchanger
heat
source tower
heat source
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Application number
PCT/CN2013/087176
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English (en)
Chinese (zh)
Inventor
梁彩华
孙立镖
蒋冬梅
张小松
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东南大学
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Publication of WO2015027570A1 publication Critical patent/WO2015027570A1/fr

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Classifications

    • 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
    • F25B30/00—Heat pumps
    • F25B30/06—Heat pumps characterised by the source of low potential heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H4/00—Fluid heaters characterised by the use of heat pumps
    • F24H4/06—Air heaters
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2200/00—Heat sources or energy sources
    • F24D2200/12—Heat pump
    • F24D2200/123—Compression type heat pumps
    • 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
    • F25B2313/002—Compression machines, plants or systems with reversible cycle not otherwise provided for geothermal
    • 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
    • F25B2313/003—Indoor unit with water as a heat sink or heat source
    • 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
    • F25B2313/025—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units
    • F25B2313/0254—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units in series arrangements
    • 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
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/02—Humidity
    • 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
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures
    • F25B2700/2106—Temperatures of fresh outdoor air

Definitions

  • the invention belongs to the field of design and manufacture of refrigeration air conditioning systems, and relates to a high efficiency heat source tower heat pump device which realizes integration based on solution heat absorption and solution concentration control. Background technique
  • the heat source tower heat pump system has the high efficiency of realizing the water-cooled chiller in summer, avoids the frosting problem of the air source heat pump in winter, and has no geographical limitation of the water/ground source heat pump, and becomes a hot and cold building in the hot summer and cold winter area.
  • a new scheme of the source the principle is that the heat source tower heat pump operates in the summer, the heat source tower is equivalent to the cooling tower of the water-cooled chiller, the heat source tower heat pump system realizes the high efficiency of the water-cooled chiller, and the heat source tower heat pump is used during the winter heating.
  • the solution exchanges heat with the air in the heat source tower, and the solution absorbs heat in the air as a low-level heat source of the heat pump unit, but in the process, the difference between the partial pressure of water vapor in the air and the partial pressure of water vapor on the surface of the solution, the moisture in the air Will enter the solution, make the concentration of the solution thin, resulting in the freezing point of the solution.
  • the main method of controlling the concentration of the solution is to carry out the regeneration of the solution. At the same time, the regeneration process of the solution is a process that needs to absorb heat.
  • the conventional heat source tower heat pump system has a form similar to a water-cooled chiller.
  • the heat absorbed in the heat source tower is transported to the evaporator of the unit by the solution as a transport working medium, and in this process, a large solution pumping pump work is required.
  • the ability to reduce or reduce this part of the pump work is also important to provide overall system energy efficiency.
  • the object of the present invention is to provide an efficient solution to the solution concentration control of a heat source tower heat pump system.
  • the integration of solution heat absorption and solution concentration control makes the heat source tower heat pump system compact and flexible, and ensures the safe and reliable duplex integrated heat source tower heat pump device under various operating conditions.
  • the dual-integrated heat source tower heat pump device of the present invention comprises a refrigerant circuit, a solution circuit, an air circuit and a hot and cold water circuit.
  • the refrigerant circuit includes a compressor, a four-way valve, a first heat exchanger, a first check valve, a second check valve, a first solenoid valve, a second solenoid valve, a second heat exchanger, a reservoir, a filter, an electronic expansion valve, a third check valve and a fourth check valve, a gas-liquid separator, a packed coil heat exchanger and related connecting pipes, wherein the first heat exchanger is also a hot and cold water circuit
  • the component part, the second heat exchanger is also a component of the solution circuit
  • the packed coil heat exchanger is also a component of the air circuit and the solution circuit.
  • the output end of the compressor is connected to the first input end of the four-way valve, the first output end of the four-way valve is connected to the first input end of the first heat exchanger, and the first output end of the first heat exchanger is simultaneously Connected to the inlet of the first one-way valve and the outlet of the third one-way valve, the outlet of the first one-way valve is divided into three paths, one way is connected to the input end of the liquid storage through the first electromagnetic valve, one way and the second one-way The outlet of the valve is connected, the other is connected to the first input end of the second heat exchanger through a second solenoid valve, and the inlet of the second check valve is connected to the third input end of the duplex heat source tower; the second heat exchanger is first The output end is also connected to the input end of the liquid reservoir, and the output end of the liquid storage device is connected to the input end of the electronic expansion valve through a filter, and the output end of the electronic expansion valve is divided into two paths, one way connecting the inlet
  • the solution circuit includes a second heat exchanger, an electric three-way regulating valve, a packed coil heat exchanger, a first liquid discharging device, a packing, a second liquid discharging device, a solution pump, a sump, a duplex heat source tower body, and Its associated connecting pipe, which is also a component of the air circuit.
  • the second output end of the complex heat source tower body is connected to the inlet of the solution pump, and the outlet of the solution pump is connected to the input end of the electric three-way regulating valve, the first output end of the electric three-way regulating valve and the double heat source tower body
  • the second input end is connected, the second input end of the multi-purpose heat source tower body is also connected to the inlet of the first liquid discharging device;
  • the second output end of the electric three-way regulating valve is connected to the second input end of the second heat exchanger, and the second heat exchanger
  • the second output end is connected to the first input end of the duplex heat source tower body, and the first input end of the duplex heat source tower body is also connected to the inlet of the second liquid discharging device, and the filler is located in the second liquid discharging device and the first liquid discharging device
  • the liquid collection tank is located at the bottom of the complex heat source tower body, and the liquid collection tank The outlet is also connected to the second output end of the duplex heat source tower body
  • the air circuit includes a complex heat source tower body and a packed coil heat exchanger, a packing, a liquid trap preventing device, and a fan disposed in the interior of the duplex heat source tower from bottom to top.
  • An air humidity sensor and an air temperature sensor are installed at the air inlet of the duplex heat source tower body
  • the hot and cold water circuit includes a first heat exchanger and an associated connecting line with the hot water return end of the unit and the hot water supply end.
  • the second input end of the first heat exchanger in the hot and cold water circuit is connected to the hot water and hot water return end of the unit, and the second output end of the first heat exchanger is connected to the hot and cold water supply end of the unit.
  • the heat released by cooling the supercooled refrigerant in the second heat exchanger is used as a solution to regenerate heat.
  • the humidity and temperature of the air entering the double heat source tower are respectively measured by the air humidity sensor and the air temperature sensor, and the water vapor partial pressure of the air entering the packed coil heat exchanger is obtained, and the solution temperature sensor and the solution density sensor are passed.
  • air is first cooled and dehumidified via a packed coil heat exchanger, and then heated and humidified by the packing.
  • the solution regeneration method is simpler and more efficient, and the heat pump tower heat pump system can be sprayed with the high temperature solution to the filler and the heat exchanger after the heat exchange in the packed coil heat exchanger.
  • the low-temperature and low-humidity air heat and mass transfer, the partial pressure of water vapor is less than the partial pressure of water vapor on the surface of the solution, the air takes away the moisture in the solution, and is discharged into the surrounding environment by the fan, thereby realizing the solution regeneration.
  • the structure of the multiple heat source tower is highly compact, the entire heat pump system can be highly integrated, the floor space is small, and can be placed on the roof, does not occupy the room area, and the conventional heat source tower heat pump system (ie, the heat source tower is on the roof, Compared with the heat pump unit in the underground machine room, the connection between the heat pump unit and the heat source tower is shortened, thereby saving the pipe material, greatly reducing the lift of the solution pump and reducing the power consumption of the solution pump.
  • the low-temperature low-pressure refrigerant gas is sucked and compressed by the compressor from the gas-liquid separator to become a high-temperature and high-pressure superheated steam, and the refrigerant enters the duplex heat source tower through the four-way valve.
  • the refrigerant exchanges heat with the water in the packed coil heat exchanger, releases heat, and condenses into a liquid, and then passes through the packed coil heat exchanger and then passes through the second
  • the one-way valve and the second electromagnetic valve enter the second heat exchanger, the liquid refrigerant exchanges heat with the cooling water, the refrigerant releases heat, and further subcooling is performed, and the refrigerant is changed from the second
  • the heater flows out, it passes through the accumulator, the filter and the electronic expansion valve, and is throttled into a low-temperature and low-pressure gas-liquid two-phase, and then enters the first heat exchanger through the third one-way valve, and the refrigerant is first changed.
  • the heat is evaporated in the heat to obtain chilled water.
  • the refrigerant After the refrigerant is completely evaporated, it passes through the four-way valve from the first heat exchanger and enters the gas-liquid separator, and is then sucked into the compressor again, and thus circulated to obtain chilled water.
  • the solution circuit is filled with cooling water.
  • the cooling water in the sump is taken out from the second output end of the double heat source tower and then sucked by the solution pump. After the solution pump is pressurized, the cooling water enters.
  • the electric three-way regulating valve the cooling water is divided into two paths in the electric three-way regulating valve, one way flows out from the first output end of the electric three-way regulating valve into the first liquid discharging device, and the other one is from the second output of the electric three-way regulating valve
  • the end flows out into the second heat exchanger, and the cooling water exchanges heat with the liquid refrigerant in the second heat exchanger to absorb heat, and after the temperature rises, flows out from the second heat exchanger into the second liquid discharging device,
  • the cooling water is evenly sprayed into the packing.
  • the cooling water exchanges heat with the air in the packing, part of the cooling water evaporates, and the remaining cooling water temperature decreases.
  • the cooling water flows out of the packing, it is evenly distributed from the first liquid discharging device.
  • the sprayed cooling water is mixed and enters into the packed coil heat exchanger, in which heat is exchanged with the refrigerant in the air and the packed coil heat exchanger, and part of the cooling water is evaporated, and the packed coil is used.
  • the heat of the refrigerant is condensed into a liquid filling the cooling water from the heat exchanger coil formula falls out of the sump, and then again from the double column body heat outflow second output, and so on.
  • the moisture content in the air increases.
  • the air further transfers heat and mass with the cooling water in the packing.
  • the temperature and moisture content of the air are further increased.
  • the air is filled from the packing. After coming out, after passing through the anti-floating device, the liquid water droplets in the air are intercepted, and then the air is taken out from the anti-floating device and then sucked by the fan, and then pressurized to discharge the double heat source tower.
  • the chilled water in the hot and cold water circuit enters the first heat exchanger from the hot water return end of the unit, the chilled water exchanges heat with the refrigerant, and the temperature decreases.
  • the chilled water comes out of the first heat exchanger and is then The hot and cold water supply end flows out of the unit.
  • Heat source tower heat pump winter heating operation is divided into two modes, heating operation mode 1: heat source tower heat pump winter heating operation, when the humidity in the air is small, the partial pressure of water vapor in the air in the double heat source tower is less than or equal to the solution
  • heating operation mode 1 heat source tower heat pump winter heating operation, when the humidity in the air is small, the partial pressure of water vapor in the air in the double heat source tower is less than or equal to the solution
  • the surface water vapor is divided into pressure, that is, when the water enters the air from the solution, the low-temperature low-pressure refrigerant gas in the gas-liquid separator is sucked by the compressor, compressed, and discharged, and enters the first heat exchange through the four-way valve.
  • Refrigerant in the first exchange The heat is released from the heater, condenses itself into a liquid, and the hot water is supplied, and then passes through the first check valve, the first electromagnetic valve (the second electromagnetic valve is closed), and then passes through the accumulator, the filter, and the electron.
  • the refrigerant is throttled and depressurized, and the gas-liquid two-phase enters the packed coil heat exchanger through the fourth one-way valve, and the refrigerant exchanges heat with the solution in the packed coil heat exchanger, and the refrigeration
  • the agent evaporates and absorbs heat. After the refrigerant completely evaporates, it flows out of the packed coil heat exchanger and flows through the four-way valve into the gas-liquid separator.
  • the solution loop is filled with the solution.
  • the solution in the sump flows out from the second output end of the duplex heat source tower and is sucked by the solution pump. After being pressurized by the solution pump, it enters the electric three-way regulating valve, and the solution is all from the electric three-way regulating valve.
  • the output end flows out into the first liquid discharging device (at this time, the second output end of the electric three-way regulating valve is closed, and the outflow flow is zero), and in the first liquid discharging device, the solution is uniformly sprayed to the packed coil heat exchanger
  • the solution flows downward in the form of a uniform liquid film or droplets, and heat and mass transfer with the air in the air circuit, the solution absorbs heat, and the solution also exchanges heat with the refrigerant in the packed coil heat exchanger tube. The heat is transferred to the refrigerant in the packed coil heat exchanger. After the solution flows out of the packed coil heat exchanger, it falls into the sump, and then the solution flows out again from the second output end of the double heat source tower.
  • the hot water in the hot and cold water circuit enters the first heat exchanger from the hot water return end of the unit, and the hot water exchanges heat with the refrigerant therein. After the temperature rises, the hot water is discharged from the first heat exchanger. The hot and cold water supply end flows out of the unit.
  • Heating operation mode 2 When the humidity in the air is large, the partial pressure of water vapor in the air in the double heat source tower is greater than the partial pressure of water vapor on the surface of the solution, that is, when the moisture enters the solution from the air, the refrigerant circuit
  • the low-temperature low-pressure refrigerant gas in the gas-liquid separator is sucked by the compressor, compressed, and discharged, and enters the first heat exchanger through the four-way valve, and the refrigerant releases heat in the first heat exchanger to be condensed into a liquid.
  • heating hot water is prepared, after the refrigerant comes out of the first heat exchanger, passes through the first check valve and the second electromagnetic valve (when the first electromagnetic valve is closed) and then enters the second heat exchanger, In the two heat exchangers, heat is exchanged with the solution, the refrigerant releases heat, and is further supercooled. After exiting the second heat exchanger, it passes through the accumulator, the filter, and the electronic expansion valve, and the refrigerant is throttled and depressurized. The gas-liquid two-phase enters the packed coil heat exchanger through the fourth one-way valve, exchanges heat with the solution in the packed coil heat exchanger, performs evaporation and heat absorption, and the heat exchanger completely evaporates and then transfers heat from the packed coil.
  • the device flows out through the four-way valve Gas-liquid separator, Finally, it is sucked in by the compressor again and recompressed to participate in the cycle. At this time, the solution loop is filled with the solution, and the solution in the sump comes out of the second output end of the double heat source tower and then enters the solution pump. After the solution pump is pressurized, it enters the electric three-way regulating valve, and the solution is adjusted in the electric three-way.
  • the valve is divided into two ways, one from the first output end of the electric three-way regulating valve flows into the first liquid discharging device, and the other one flows out from the second output end of the electric three-way regulating valve into the second heat exchanger, and the solution is in the first
  • the two heat exchangers exchange heat with the liquid refrigerant to absorb heat. After the temperature rises, the second heat exchanger flows out into the second liquid discharge device, and the solution is uniformly sprayed into the filler, and the solution is in the filler.
  • the air undergoes heat and mass exchange, so the solution temperature is higher, the partial pressure of water vapor in the solution is greater than the partial pressure of water vapor in the air, the moisture in the solution enters the air, the concentration of the solution will increase, and the solution is regenerated, and the solution flows out from the filler.
  • the solution after mixing with the solution uniformly distributed from the first liquid discharging device, enters into the packed coil heat exchanger, in which the solution exchanges heat with the air, and the solution is from the air.
  • the solution also exchanges heat with the refrigerant in the packed coil heat exchanger, and the solution releases heat, causing the refrigerant to absorb heat and evaporate, and the temperature of the solution will decrease.
  • the solution exits the packed coil heat exchanger and falls into the sump, and then flows out again from the second output end of the double heat source tower body, thus circulating.
  • the partial pressure is greater than the partial pressure of water vapor on the surface of the solution, and the air temperature is lowered while the moisture content is reduced.
  • the moisture in the solution will enter the air in a large amount, and the concentration of the solution.
  • the temperature and moisture content of the air will rise sharply.
  • the air comes out of the packing and passes through the anti-floating device, the small droplets of the solution in the air are intercepted, and then the air is taken out from the anti-floating device and then sucked in by the fan. After the double heat source tower is discharged.
  • the hot and hot water in the hot and cold water circuit enters the first heat exchanger from the hot water return end of the unit, and the hot water exchanges heat with the refrigerant therein. After the temperature rises, the hot water is discharged from the first heat exchanger. The hot and cold water supply end of the unit flows out of the unit.
  • solution regeneration utilizes the heat released by the liquid refrigerant to achieve supercooling, and by controlling the electric three-way regulating valve, the pair enters the first liquid discharging device and the second cloth respectively.
  • the solution flow rate of the liquid device is adjusted, that is, the amount of the solution regenerated into the packing is adjusted, thereby realizing the control of the solution concentration in the double heat source tower; 2) using the packing and the packed coil heat exchanger in series on the air circuit, thereby realizing
  • the air is supplied to the heat pump system through the packed coil heat exchanger while using the low heat source of the heat pump system.
  • the low temperature and low humidity of the air provide a good environment for solution regeneration, achieve better regeneration of the solution, and enable the system to obtain efficient heating efficiency, and have the best solution regeneration performance to keep the system safe and reliable.
  • the low temperature and low humidity air from the packed coil heat exchanger provides a good environment for solution regeneration, improves the regeneration performance of the system solution, and keeps the system safe and reliable.
  • the device structure of the invention is highly compact, the whole heat pump system can be highly integrated, the floor space is small, and can be placed on the roof, does not occupy the room area, and the conventional heat source tower heat pump system (ie, the heat source tower is on the roof, the heat pump unit is underground) Compared with the machine room, the connection between the heat pump unit and the heat source tower is shortened, thereby saving the pipe material, greatly reducing the lift of the solution pump and reducing the power consumption of the solution pump.
  • the heat released by the supercooling of the refrigerant is used as the solution to regenerate the heat
  • the solution regeneration heat source of the heat source tower heat pump system is efficiently solved
  • the solution heat absorption and solution concentration control are integrated.
  • Figure 1 is a schematic illustration of a dual integrated heat source tower heat pump apparatus of the present invention.
  • the figure includes: compressor 1; four-way valve 2; four-way valve first input end 2a; four-way valve first output end 2b; four-way valve second input end 2c ; four-way valve second output end 2d; First heat exchanger 3; first heat exchanger first input end 3a; first heat exchanger first output end 3b; first heat exchanger second input end 3c; first heat exchanger second output end 3d First check valve 4; second check valve 5; first solenoid valve 6; second solenoid valve 7; second heat exchanger 8; second heat exchanger first input end 8a ; second heat exchanger a first output end 8b ; a second heat exchanger second input end 8c ; a second heat exchanger second output end 8d; a reservoir 9; a filter 10; an electronic expansion valve 11; a third check valve 12; Four-way valve 13; gas-liquid separator 14; electric three-way regulating valve 15; electric three-way regulating valve input end 15a; electric three-way regulating valve first output end 15b; electric three-way regulating
  • the dual integrated heat source tower heat pump device of the present invention comprises a refrigerant circuit, a solution circuit, an air circuit and a hot and cold water circuit.
  • the specific connection method is
  • the output end of the compressor 1 is connected to the first input end 2a of the four-way valve, and the first output end 2b of the four-way valve is connected to the first input end 3a of the first heat exchanger, the first heat exchanger
  • An output end 3b is simultaneously connected to the inlet of the first one-way valve 4 and the outlet of the third one-way valve 12, and the outlet of the first one-way valve 4 is divided into three paths, one way passing through the first electromagnetic valve 6 and the accumulator 9.
  • the input is connected; one is connected to the outlet of the second check valve 5, the other is connected to the second heat exchanger first input 8a through the second solenoid valve 7, the inlet of the second check valve 5 and the complex heat source tower
  • the third input end 24c of the body is connected, the first output end 8b of the second heat exchanger is also connected to the input end of the accumulator 9, and the output end of the accumulator 9 is connected to the input end of the electronic expansion valve 11 through the filter 10.
  • the output end of the electronic expansion valve 11 is divided into two paths, one is connected to the inlet of the third one-way valve 12, the other is connected to the inlet of the fourth one-way valve 13, and the outlet of the fourth one-way valve 13 is also connected with the complex heat source tower
  • the three input terminals 24c are connected, and the third input end 24c of the complex heat source tower body is the same
  • the refrigerant coil output end 17b of the packed coil heat exchanger is connected to the first output end 24d of the double heat source tower, and the first output of the composite heat source tower body is connected to the refrigerant input end 17a of the packed coil heat exchanger.
  • the end 24d is also connected to the fourth input end 2c of the four-way valve, and the second output end 2d of the four-way valve is connected to the input end of the gas-liquid separator 14, the output end of the gas-liquid separator 14 and the input end of the compressor 1. connection.
  • the second heat output tower body second output end 24e is connected to the inlet of the solution pump 23, the outlet of the solution pump 23 is connected to the electric three-way regulating valve input end 15a, and the electric three-way regulating valve first output end 15b and the duplex type
  • the second input end 24b of the heat source tower body is connected, and the second input end 24b of the duplex heat source tower body is also connected to the inlet of the first liquid discharging device 18;
  • the second output end 15c of the electric three-way regulating valve is connected to the second heat exchanger a second input end 8c, a second heat exchanger second output end 8d is connected to the first heat source tower body first input end 24a, and the first heat source tower body first input end 24a is also connected to the second liquid discharge device 20
  • the packing 19 is located between the second liquid discharging device 20 and the first liquid discharging device 18, the liquid collecting tank 16 is located at the bottom of the double heat source tower body 24, and the outlet of the liquid collecting tank 16 is also connected to the second
  • a sump 16 In the air circuit, a sump 16, a packed coil heat exchanger 17, a packing 19, an anti-floating device 21, and a fan 22 are disposed in this order from the bottom to the top of the duplex heat source tower body 24.
  • the air humidity sensor 25 and the air temperature sensor 26 are installed at the air inlet of the duplex heat source tower body 24.
  • the second input end 3c of the first heat exchanger in the hot and cold water circuit is connected to the hot water return end of the unit, and the second output end 3d of the first heat exchanger is connected to the hot and cold water supply end of the unit.
  • the low-temperature low-pressure refrigerant gas is sucked and compressed by the compressor 1 from the gas-liquid separator 14 to become a high-temperature and high-pressure superheated vapor, and the refrigerant passes through the four-way valve 2 to enter the duplex type.
  • the refrigerant exchanges heat with the water in the packed coil heat exchanger 17, releasing heat, and condensing into a liquid, from the packed coil heat exchanger 17
  • the second check valve 5 and the second electromagnetic valve 7 enter the second heat exchanger 8 in turn, and the liquid refrigerant exchanges heat with the cooling water, and the refrigerant releases heat.
  • the refrigerant flows out of the second heat exchanger 8, passes through the accumulator 9, the filter 10, and the electronic expansion valve 11 in turn, and is throttled into a low-temperature and low-pressure gas-liquid two-phase, and then passes through the third.
  • the check valve 12 enters the first heat exchanger 3, and the refrigerant absorbs heat in the first heat exchanger 3 to obtain chilled water.
  • the refrigerant completely evaporates and then exits from the first heat exchanger 3 through the four-way valve 2
  • the gas-liquid separator 14 is then sucked into the compressor 1 again, , Preparation of frozen water. At this time, the solution circuit is filled with cooling water.
  • the cooling water in the sump 16 is taken out from the second output end 24e of the double heat source tower body and then sucked by the solution pump 23, and after being pressurized by the solution pump 23
  • the cooling water enters the electric three-way regulating valve 15, and the cooling water is divided into two paths in the electric three-way regulating valve 15, one of which flows out from the first output end 15b of the electric three-way regulating valve into the first liquid discharging device 18, and the other one is from the other
  • the second output end 15c of the electric three-way regulating valve flows out into the second heat exchanger 8, and the cooling water exchanges heat with the liquid refrigerant in the second heat exchanger 8, absorbs heat, and after the temperature rises, the second exchange
  • the heat exchanger 8 flows out into the second liquid discharging device 20, and the cooling water is uniformly sprayed into the packing 19, and the cooling water exchanges heat with the air in the packing 19, and part of the cooling water evaporates, and the remaining cooling water temperature is lowered, and the cooling water is cooled.
  • the packing 19 After flowing out of the packing 19, it is mixed with the cooling water uniformly discharged from the first liquid discharging device 18 to enter the packed coil heat exchanger 17, in which the air and the coiled coil heat exchanger 17 are cooled.
  • the cooling water comes out of the packed coil heat exchanger 17 and falls into the sump 16, and then again from the double heat source tower body.
  • the two output terminals 24e flow out, and thus circulate.
  • air enters the complex heat source tower from the lower part of the complex heat source tower body 24, and then first enters the packed coil heat exchanger 17, and performs heat and mass exchange with the cooling water in the packed coil heat exchanger 17, partially cooling
  • the water evaporates, the moisture content in the air increases, and the air exits the packed coil heat exchanger 17 and enters the packing 19, and the air further heat and mass transfer with the cooling water in the packing 19, the temperature and moisture content of the air.
  • the air exits the packing 19 and passes through the anti-floating device 21, and the liquid water droplets in the air are intercepted, and then the air is taken out from the anti-floating device 21 and then sucked by the fan 22, and pressurized to discharge the double heat source tower.
  • the chilled water in the hot and cold water circuit enters the first heat exchanger from the hot water return end of the unit In the third, the chilled water exchanges heat with the refrigerant, and the temperature is lowered. After the chilled water comes out of the first heat exchanger 3, the cold water supply end of the unit flows out of the unit.
  • Heat source tower heat pump winter heating operation is divided into two modes, heating operation mode 1: heat source tower heat pump winter heating operation, when the humidity in the air is small, the partial pressure of water vapor in the air in the double heat source tower is less than or equal to the solution
  • heating operation mode 1 heat source tower heat pump winter heating operation, when the humidity in the air is small, the partial pressure of water vapor in the air in the double heat source tower is less than or equal to the solution
  • the water vapor of the surface is divided into pressures, that is, when the water enters the air from the solution, the low-temperature low-pressure refrigerant gas in the gas-liquid separator 14 is sucked by the compressor 1, compressed, and discharged, and enters the fourth through the four-way valve 2.
  • the refrigerant releases heat in the first heat exchanger 3, condenses itself into a liquid, produces hot water, and then passes through the first check valve 4, the first solenoid valve 6 (at this time the second After the solenoid valve 7 is closed, and then sequentially passes through the accumulator 9, the filter 10, and the electronic expansion valve 11, the refrigerant is throttled and depressurized, and the gas-liquid two-phase enters the packed coil heat exchanger through the fourth check valve 13
  • the refrigerant exchanges heat with the solution in the packed coil heat exchanger 17
  • the refrigerant evaporates and absorbs heat
  • the refrigerant completely evaporates and then flows out of the packed coil heat exchanger 17 through the four-way valve 2 to enter the gas.
  • Liquid separator 14 last It is sucked in by the compressor 1 to complete the heating cycle to obtain hot water for heating. At this point the solution loop is filled with the solution.
  • the solution in the sump 16 flows out from the second output end 24e of the duplex heat source tower body and is sucked by the solution pump 23, and after being pressurized by the solution pump 23, enters the electric three-way regulating valve 15, and the solution is all from the electric three.
  • the first output end 15b of the regulating valve flows out into the first liquid discharging device 18 (when the second output end 15c of the electric three-way regulating valve is closed, the outflow flow rate is zero), and in the first liquid discharging device 18, the solution is evenly sprayed Leaving into the packed coil heat exchanger 17, the solution flows downward in the form of a uniform liquid film or droplets, and heat and mass transfer with the air in the air circuit, the solution absorbs heat, and the solution is also exchanged with the packing coil
  • the refrigerant in the heat exchanger 17 exchanges heat, transfers heat to the refrigerant in the packed coil heat exchanger 17, and the solution flows out of the packed coil heat exchanger 17, and then falls into the sump 16, and then The solution again flows out of the second heat output tower body second output end 24e.
  • the moisture content increases, and the air enters the packing 19 after exiting the packing coil heat exchanger 17, because the second liquid discharging device 20 has no solution flowing out, the air will directly enter the anti-floating device 21 through the packing 19, in the air.
  • the small droplets of the solution are intercepted, and then the air exits the anti-floating device 21 and is sucked by the blower 22, and is pressurized to discharge the duplex heat source tower.
  • the hot water in the hot and cold water circuit enters the first heat exchanger 3 from the hot water return end of the unit, and the hot water exchanges heat with the refrigerant therein. After the temperature rises, the hot water is discharged from the first heat exchanger 3, The hot and cold water supply end of the unit flows out of the unit.
  • Heating operation mode 2 When the humidity in the air is large, the partial pressure of water vapor in the air in the double heat source tower is greater than the partial pressure of water vapor on the surface of the solution, that is, when the moisture enters the solution from the air, the refrigerant circuit in,
  • the low-temperature low-pressure refrigerant gas in the gas-liquid separator 14 is sucked by the compressor 1, compressed, and discharged, and enters the first heat exchanger 3 through the four-way valve 2, and the refrigerant releases heat in the first heat exchanger 3, Condensing into a liquid to prepare hot water for heating, after the refrigerant comes out of the first heat exchanger 3, passes through the first check valve 4, the second solenoid valve 7 (when the first solenoid valve 6 is closed), and then enters the first
  • the second heat exchanger 8 exchanges heat with the solution in the second heat exchanger 8, the refrigerant releases heat, and is further supercooled, and then passes through the second heat exchanger 8 and then passes through the accumulator 9, the filter
  • the expansion valve 11 the refrigerant is throttled and depressurized, and the gas-liquid two-phase enters the packed coil heat exchanger 17 through the fourth one-way valve 13, and exchanges heat with the solution in the packed coil heat exchanger 17 Evaporation heat absorption, the refrigerant completely evaporates and then flows out of the packed coil heat exchanger 17 through the four-way valve 2 into the gas-liquid separator 14, and finally is again sucked by the compressor 1, and is recompressed to participate in the cycle.
  • the solution circuit is filled with the solution, and the solution in the sump 16 is discharged from the second output end 24e of the double heat source tower body and then enters the solution pump 23, and is pressurized by the solution pump 23 to enter the electric three-way regulating valve 15, the solution
  • the electric three-way regulating valve 15 is divided into two paths, one way flows out from the first output end 15b of the electric three-way regulating valve into the first liquid discharging device 18, and the other one flows out from the second output end 15c of the electric three-way regulating valve into the first
  • the solution exchanges heat with the liquid refrigerant in the second heat exchanger 8, absorbs heat, and after the temperature rises, flows out of the second heat exchanger 8 into the second liquid discharge device 20, the solution It is evenly sprayed into the filler 19, and the solution exchanges heat with the air in the filler 19.
  • the solution temperature is higher, the partial pressure of water vapor in the solution is greater than the partial pressure of water vapor in the air, and the moisture in the solution enters the air.
  • the solution concentration will be increased to effect solution regeneration.
  • the solution flows out of the packing 19, it is mixed with the solution uniformly distributed from the first liquid discharging device 18, and then enters the packed coil heat exchanger 17, in which the solution is Gas for heat exchange, the solution absorbs heat from the air, the temperature increases, while the vapor pressure of water vapor in the air is larger than the surface of the solution partial pressure, moisture in the air into the solution, this part of the latent heat absorption solution, concentration of the solution will decrease.
  • the solution also exchanges heat with the refrigerant in the packed coil heat exchanger 17, and the solution releases heat, causing the refrigerant to absorb heat and evaporate, and the temperature of the solution will decrease.
  • the solution exits the packed coil heat exchanger 17 and falls into the sump 16, and then flows out of the second output end of the duplex heat source tower 24e again, thus circulating.
  • air enters the complex heat source tower from the lower part of the complex heat source tower body 24, and then first enters the packed coil heat exchanger 17, and performs heat and mass exchange with the solution in the packed coil heat exchanger 17, due to the air.
  • the partial pressure of water vapor is greater than the partial pressure of water vapor on the surface of the solution, and the temperature of the air is lowered while the moisture content is reduced.
  • the surface water vapor partial pressure of the solution in the filler 19 is much larger than the partial pressure of water vapor in the air, and the moisture in the solution at this time. Put a lot of air into the solution The concentration is increased, the temperature and moisture content of the air will rise sharply. After the air comes out of the packing 19 and passes through the anti-floating device 21, the small droplets of the solution in the air are intercepted, and then the air is discharged from the anti-floating device 21 and then blown by the fan. 22 Inhalation, pressurization and discharge the double heat source tower.
  • the hot and hot water in the hot and cold water circuit enters the first heat exchanger 3 from the hot water return end of the unit, and the hot water exchanges heat with the refrigerant therein, and after the temperature rises, the first heat exchanger 3 comes out. , the unit is discharged from the hot and cold water supply end of the unit.
  • the solution regeneration utilizes the heat released by the liquid refrigerant to achieve the supercooling, and the electric three-way regulating valve 15 is controlled to realize the entry into the first liquid discharging device 18 and the first
  • the solution flow rate of the second liquid discharging device 20 is adjusted, that is, the amount of the solution regenerated into the packing 19 is adjusted, thereby realizing the control of the solution concentration in the double heat source tower; 2) using the packing 19 and the packed coil heat exchanger 17 in the air
  • the circuit is connected in series to realize that the air provides a low heat source for the heat pump system through the packed coil heat exchanger 17, and at the same time, the low temperature and low humidity of the air from the packed coil heat exchanger 17 provide good solution regeneration. Environment, to achieve better regeneration of the solution, to achieve efficient heating efficiency of the system, with the best solution regeneration performance, to keep the system safe and reliable.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Other Air-Conditioning Systems (AREA)

Abstract

L'invention concerne un appareil de pompe à chaleur intégré composé pour une tour source de chaleur, comprenant une boucle de réfrigérant, une boucle de solution, une boucle d'air et une boucle d'eau froide et chaude. L'appareil de pompe à chaleur intégré composé pour une tour source de chaleur utilise la chaleur dégagée dans le processus de surfusion d'un réfrigérant en tant que chaleur régénérée pour une solution, intègre l'absorption de chaleur de la solution et la commande de la concentration de la solution, et rend un système de pompe à chaleur de la tour source de chaleur compact et flexible. Le même air est utilisé dans un mode en série dans le processus d'absorption de chaleur de solution et le processus de régénération de solution, de façon à réaliser l'efficacité élevée de régénération de la solution. Lorsqu'un fonctionnement sûr et fiable du système de pompe à chaleur de la tour source de chaleur dans diverses conditions de travail est assuré, un fonctionnement à haute efficacité du système est réalisé.
PCT/CN2013/087176 2013-09-02 2013-11-15 Appareil de pompe à chaleur intégré composé pour tour source de chaleur WO2015027570A1 (fr)

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CN201310389594.5A CN103438613B (zh) 2013-09-02 2013-09-02 复式一体化热源塔热泵装置

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CN105972734A (zh) * 2016-06-16 2016-09-28 杭州滨创能源科技有限公司 热驱动和热泵组合式溶液调湿机组及调湿控制方法
CN106440518A (zh) * 2016-11-02 2017-02-22 江苏海雷德蒙新能源有限公司 一种高效的能源塔溶液热泵机组***
CN106766384A (zh) * 2017-03-31 2017-05-31 中国环境科学研究院 一种可实现水汽转换的低温空气源热泵装置及其方法
CN108112224A (zh) * 2018-01-25 2018-06-01 郑州云海信息技术有限公司 一种液冷换热装置
CN111578301A (zh) * 2019-02-19 2020-08-25 北京热科能源技术研究有限公司 一种烟气余热回收***
DE112020000350T5 (de) 2019-01-07 2021-09-23 Bnnt, Llc Optimierung einer Bornitrid-Nanoröhren-Vibrationsdämpfung
CN114877565A (zh) * 2022-06-02 2022-08-09 江苏海雷德蒙新能源(集团)有限公司 一种具有节能改造结构的水汽能热泵

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CN103940164B (zh) * 2014-05-16 2017-01-04 清华大学 一种溶液喷淋式无霜空气源热泵装置
CN104990305B (zh) * 2015-07-09 2017-08-25 东南大学 一种全工况运行的预凝式热源塔装置
CN109900018B (zh) * 2019-01-31 2021-02-23 浙江理工大学 空气源热泵***
CN110360852B (zh) * 2019-08-06 2024-06-11 浙江英特科技股份有限公司 一种相变能源塔及其换热方法
CN110360769B (zh) * 2019-08-06 2023-11-07 浙江英特科技股份有限公司 一种具有相变能源塔的热泵***及其换热方法
CN111550950B (zh) * 2020-05-18 2021-12-14 南京工程学院 一种溶液喷淋除霜空气源热泵与冰源热泵耦合***
CN116025972B (zh) * 2022-12-13 2024-05-28 福建省建筑设计研究院有限公司 一体式水环路多功能热平衡器

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CN106440518A (zh) * 2016-11-02 2017-02-22 江苏海雷德蒙新能源有限公司 一种高效的能源塔溶液热泵机组***
CN106766384A (zh) * 2017-03-31 2017-05-31 中国环境科学研究院 一种可实现水汽转换的低温空气源热泵装置及其方法
CN108112224A (zh) * 2018-01-25 2018-06-01 郑州云海信息技术有限公司 一种液冷换热装置
DE112020000350T5 (de) 2019-01-07 2021-09-23 Bnnt, Llc Optimierung einer Bornitrid-Nanoröhren-Vibrationsdämpfung
CN111578301A (zh) * 2019-02-19 2020-08-25 北京热科能源技术研究有限公司 一种烟气余热回收***
CN114877565A (zh) * 2022-06-02 2022-08-09 江苏海雷德蒙新能源(集团)有限公司 一种具有节能改造结构的水汽能热泵

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