CN102705920A - Double-cold-source heat pump total heat recovery humidity regulating and temperature controlling fresh air unit and control method thereof - Google Patents
Double-cold-source heat pump total heat recovery humidity regulating and temperature controlling fresh air unit and control method thereof Download PDFInfo
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- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/56—Heat recovery units
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Abstract
The invention discloses a double-cold-source heat pump total heat recovery humidity regulating and temperature controlling fresh air unit and a control method thereof, and belongs to the fields of energy utilization technology and air conditioning. The fresh air unit comprises an air exhaust part, a fresh air treatment part, a surface heat exchanger and a heat pump system, wherein the heat pump system comprises a compressor, a condenser, a condensation heat recoverer, an evaporator and a throttling component. The fresh air unit utilizes indoor low-temperature and low-humidity exhausted air to exhaust condensation heat of a refrigeration system in summer, and utilizes indoor high-temperature and high-humidity exhausted air to exhaust evaporation cold energy of the refrigeration system in winter. The surface heat exchanger aims at performing pre-cooling and pre-dehumidification to high-temperature and high-humidity fresh air through chilled water dew point temperature. The heat pump system provides required cold energy and heat as well as the lower dew point temperature that the chilled water is unaccessible to for the fresh air treatment part.
Description
Technical field
The present invention relates to a kind of heat pump full heat recovery fresh air and handle unit, particularly
New blower fan group of the full recuperation of heat damping of double-cold source heat pump temperature control and control mode thereof..
Background technology
China's civil buildings air-conditioning system mostly adopts new return air mixed mode, because most of air is in indoor circulation, being discharged to of making that pollutant can not be very fast is outdoor, and harm humans is healthy.Strengthen the resh air requirement method of operation of brand-new wind (or adopt), can indoor harmful substance dilute and discharge outdoorly, obviously improve indoor air quality.But then, the increase of resh air requirement makes new wind handle energy consumption increases greatly.To the at present dehumidification modes that adopt chilled water or directly evaporate of processing mode of air, there is the drawback of the following aspects in this air conditioning mode: one, the condensation temperature of air cooling refrigeration machine is higher, and Energy Efficiency Ratio is low more in addition; Two, the chilled water temperature that provides of central cooling-water machine certain (being that dew-point temperature is certain), intractable is to the requirement of humiture autonomous system to new wind water capacity; Three, be difficult to adapt to the variation of heat moisture ratio.Only through evaporation mode air is cooled off and dehumidify, the sensible heat of its absorption and latent heat are than can only changing in certain scope, and the heat moisture ratio of building actual needs changes in the larger context.Generally be the control of sacrificing relative humidity, compromise, cause the too high or too low phenomenon of indoor relative humidity through the requirement of only satisfying indoor temperature; Four, because of the low excessively existence that causes condensed water of leaving air temp, the surface of coil pipe has formed the hotbed that grows various moulds, has worsened indoor air quality, causes multiple Cure of Sick Building Syndrome.Thereby humiture was independently located erection system and had been obtained utilization more and more widely in recent years.
This
New blower fan group of the full recuperation of heat damping of double-cold source heat pump temperature control and control mode thereof.; Except being applied to general central air-conditioning cooling-water machine and ice-storage system; And be more suitable for being used for the humiture autonomous system, so-called humiture independence control air conditioner system adopts temperature and humidity two to overlap independently air-conditioner control system; Control respectively, interior temperature and the humidity of conditioning chamber, thus the loss that the wet Combined Treatment of heat is brought in the conventional air-conditioning system avoided.Independently control system because temperature, humidity adopt, can satisfy the not constantly requirement of variation of chummery heat moisture ratio, overcome the requirement that is difficult to satisfy simultaneously temperature, humidity parameter in the conventional air-conditioning system, avoided the phenomenon of indoor humidity too high (or low excessively).
It has utilized the combination of central air-conditioning chilled water and heat pump full heat recovery fresh air unit, and the dew-point temperature of having avoided the conventional central air-conditioning to handle new wind receives the influence of chilled water temperature, does not reach the requirement of humiture autonomous system to new wind water capacity; Its basic function is: the system that handles sensible heat and latent heat can interior temperature and the humidity of while conditioning chamber.The ultralow dew-point temperature of the direct vaporation-type evaporimeter control room air of surface-type heat exchanger through chilled water and heat pump is handled latent heat and part sensible heat; Heat up through the condensation heat recover again; Utilize the heat pump condensation heat to heat up and reduce the relative humidity of new wind air-out, thereby do not exist leaving air temp to cross the danger of low dewfall.The fresh air processor group is also born simultaneously and is removed indoor CO2, peculiar smell, to guarantee the task of IAQ.
In the humiture independence control air conditioner system, need the fresh air processor group that dry outdoor new wind is provided, to satisfy hydrofuge, row CO2, to arrange the demand of distinguishing the flavor of and fresh air being provided.Adopting the conventional rotor dehumidification mode, is a kind of possible solution route, promptly is attached to the wheel surface that aglite is made with hygroscopic materials such as silica gel, molecular sieves.But the essence that the rotary dehumidifier utilization efficiency of heat energy is low is dehumidifying all is constant-enthalpy process and non-isothermal process with these two processes of regeneration; Psychrometric difference between wheel surface and air and temperature difference are all very inhomogeneous; Cause very big irreversible loss, also have the situation of new wind and air draft cross pollution simultaneously.Another dehumidification mode is that air dehumidifies through the surface-type heat exchanger of chilled water earlier in advance; And then the refrigerant evaporator of direct and low temperature carries out heat exchange (through lower dew-point temperature); Airborne steam is condensed into behind the condensed water intensification through auxiliary condenser; Thereby realize the superpower dehumidifying purpose of air, thereby realize moisture absorption process near isothermal; Low temperature and low humidity air draft simultaneously helps to reduce condensation temperature through condenser, thereby has improved the Energy Efficiency Ratio of unit greatly.Adopt surface-type heat exchanger to combine the processing of heat pump dehumidifying technology air conditioner fresh air, particularly chilled water to be beyond one's reach and hang down the dew point evaporating temperature; New air draft is two tunnel autonomous channels, has stopped cross pollution, has improved indoor air quality; The energy of system recoveries indoor exhaust wind has reduced new wind and has handled energy consumption; Improve the heat pump Energy Efficiency Ratio, make low taste thermal source be able to utilize because heat pump can obtain the heat of Duo than drive energy, help energy-conservation with improve the environmental situation that causes because of fire coal, fuel oil.
Summary of the invention
The object of the invention aim to provide a kind of simple and reasonable, operate steadily, energy consumption is low
New blower fan group of the full recuperation of heat damping of double-cold source heat pump temperature control and control mode thereof, to overcome and to improve weak point of the prior art.
Design by this purpose
The new blower fan group of the full recuperation of heat damping of double-cold source heat pump temperature control, form by air draft part, new wind processing section, surface-type heat exchanger and heat pump.Solid line is represented the refrigeration working medium flow duct among the figure, and dotted line is represented new wind and air draft treatment channel.
Described
The new blower fan group of the full recuperation of heat damping of double-cold source heat pump temperature control, it is characterized in that the c interface of said four-way change-over valve is connected with an end of condenser, a interface is connected with the exhaust outlet of compressor, and the b interface is connected with the air entry of compressor, and the d interface is connected with an end of evaporimeter; The other end of condenser is connected with the other end of evaporimeter through throttle part.
Also be connected with magnetic valve a between said condenser and the throttle part, magnetic valve a two ends are parallel with the condensation heat recover, wherein, the end that magnetic valve a is connected with condenser be connected with the condensation heat recover through magnetic valve b; The condensation heat recover is arranged on new wind air outlet place.
Said surface-type heat exchanger is arranged on new wind air inlet place.
Said new wind processing section contains new blower fan and humidifier, and humidifier is arranged between evaporimeter and the condensation heat recover.
When outdoor air is the high temperature humid air, compressor and starting, a of cross valve reversal valve, c interface are communicated with, and b, d interface are communicated with, and outdoor new wind through the surface-type heat exchanger of chilled water operation, dehumidifies successively in advance; Through further cooling and degree of depth dehumidifying of evaporator, send into indoor after heating up through the condensation heat recover then again.The purpose of surface-type heat exchanger is to utilize the chilled water dew-point temperature that hot and humid new wind is carried out precooling and dehumidifying in advance; The purpose of evaporimeter is to reach the chilled water lower dew-point temperature that is beyond one's reach through refrigerant evaporation, further removes surface-type heat exchanger and can't handle the moisture in the new wind; Heating up through the condensation heat recover reduces its relative humidity again, to reach required air-out humiture.The air draft of indoor low temperature low humidity is discharged outdoor through condenser, help cooler condenser to strengthen its heat-sinking capability, reaches to reduce power consumption raising Energy Efficiency Ratio.When outdoor air is the low temperature drying air, compressor and starting, a of cross valve reversal valve, d interface are communicated with, and b, c interface are communicated with, and realize the mutual conversion of evaporimeter and condenser through the cross valve switching-over.The new wind of open-air seasoning, low temperature after the surface-type heat exchanger preheating of superheated water operation, passes through condenser and humidifier successively again, by the humidification that further heats up, new wind be heated send into behind the humidification indoor; The heat exhaust of condenser is used for further promoting new wind leaving air temp; The surface-type heat exchanger of hot water operation helps the stable operation of heat pump simultaneously to the preheating of new wind.Indoor hot and humid air is discharged from outdoor through evaporator after the cooling; Magnetic valve a opens, and magnetic valve b closes, and the condensation heat recover is not worked.
Xia Qiu changes according to the season, and when the outdoor air humiture is fit to, under central air-conditioning cooling-water machine ruuning situation, preferentially closes the compressor of heat pump, and new wind overcomes new wind load through the surface-type heat exchanger of chilled water operation; Under central air-conditioning cooling-water machine shutdown situation; New wind overcomes new wind and indoor load through the operation of heat pump; Cross when low when indoor temperature and humidity, close the compressor of heat pump, air and the air from outdoor inlet chamber in outdoor from indoor discharge carry out ventilation;
Changing according to the season in the Winter-Spring, when outside air temperature is fit to, under central hot water machine ruuning situation, preferentially closes the compressor of heat pump, and new wind overcomes new wind load through the surface-type heat exchanger of hot water operation; Under central hot water machine shutdown situation; New wind overcomes new wind and indoor load through the operation of heat pump; When indoor temperature and humidity is too high, close the compressor of heat pump, air and the air from outdoor inlet chamber in outdoor from indoor discharge carry out ventilation.
Said condensation heat recover and condenser are connected in series, and are used to reclaim the condensation heat of refrigeration system, and new wind leaving air temp and reduction relative humidity raise; If new wind leaving air temp is low excessively, need magnetic valve b is opened, magnetic valve a closes; If new wind leaving air temp is too high, then need magnetic valve a is opened, magnetic valve b closes, and the condensation heat recover is not worked.
The present invention has utilized the central air-conditioning chilled water and has adopted the heat pump techniques incompatible processing air conditioner fresh air that joins; Also can be through removing the dust and the bacterium of carrying secretly in the air in partly additional filtration of new wind and sterilizing unit; Play the effect that purifies air, improved indoor air quality; System can reclaim the energy of indoor exhaust wind, has reduced new wind and has handled energy consumption; Utilize heat pump that the dehumidifying heat is provided, make low taste thermal source be able to utilize because heat pump can obtain the heat of Duo than drive energy, help energy-conservation with improve the environmental situation that causes because of fire coal, fuel oil.
Description of drawings
Fig. 1 is one embodiment of the invention operation principle sketch map-summer operation sketch map.
Fig. 2 is another embodiment of the present invention operation principle sketch map-winter operation sketch map.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further described.
Referring to Fig. 1, this
The new blower fan group of the full recuperation of heat damping of double-cold source heat pump temperature control, form by air draft part, new wind processing section, surface-type heat exchanger and heat pump.Heat pump comprises compressor 1, cross valve reversal valve 10, condenser 2, evaporimeter 4, condensation heat recover 5 and throttle part 9, and condensation heat recover 5 is arranged on new wind air outlet place; The air draft part is carried out by exhaust blower 3; Surface-type heat exchanger is arranged on new wind air inlet place; New wind processing section contains new blower fan 6 and humidifier 12 is formed.
The c interface of four-way change-over valve 10 is connected with an end of condenser 2, and a interface is connected with the exhaust outlet of compressor 1, and the b interface is connected with the air entry of compressor 1, and the d interface is connected with an end of evaporimeter 4; The other end of condenser 2 is connected with the other end of evaporimeter 4 through throttle part 9.
Also be connected with magnetic valve a8 between condenser 2 and the throttle part 9, magnetic valve a8 two ends are parallel with condensation heat recover 5, wherein, the end that magnetic valve a8 is connected with condenser 2 be connected with condensation heat recover 5 through magnetic valve b7; Condensation heat recover 5 is arranged on new wind air outlet place.
The new blower fan 6 of new wind processing section is arranged on new wind air outlet place, and humidifier 12 is arranged between evaporimeter 4 and the condensation heat recover 5.
The exhaust blower 3 of air draft part is arranged on indoor exhaust wind air outlet place, discharges condenser heat.
Surface-type heat exchanger 11 is arranged on new wind air inlet place, and new wind is carried out precooling.
Below the present invention is done a detailed description, in sum, be merely one of the present invention preferred embodiment, when can not limiting practical range of the present invention, promptly allly do impartially to change and modify, all should still belong in the covering scope of the present invention according to the application's scope.
Its operation principle is:
One, summer operation
Referring to Fig. 1, when outdoor air is the high temperature humid air, compressor and starting 1, a of cross valve reversal valve 10, c interface are communicated with, and b, d interface are communicated with, and the surface-type heat exchanger 11 that the outdoor new wind that high temperature is moist moves through chilled water successively dehumidifies in advance; Through further cooling and degree of depth dehumidifying of evaporator 4, send into indoor after heating up through condensation heat recover 5 then again.The purpose of evaporimeter 4 is to reach the chilled water lower dew-point temperature that is beyond one's reach through refrigerant evaporation, further removes surface-type heat exchanger and can't handle the moisture in the new wind; Heating up through condensation heat recover 5 reduces its relative humidity again, to reach required air-out humiture.The air draft of indoor low temperature low humidity is discharged outdoor through condenser 2, help cooler condenser to strengthen its heat-sinking capability, reaches to reduce power consumption raising Energy Efficiency Ratio.If new wind leaving air temp is low excessively, need magnetic valve b7 is opened, magnetic valve a8 closes, the condensation heat of condensation heat recover 5 be used to raise new wind leaving air temp and reduce relative humidity; If new wind leaving air temp is too high, then need magnetic valve a8 is opened, magnetic valve b7 closes, and condensation heat recover 5 is not worked.
Two, winter operation
Referring to Fig. 2, when outdoor air is the low temperature drying air, compressor and starting 1, a of cross valve reversal valve 10, d interface are communicated with, and b, c interface are communicated with, and realize the mutual conversion of evaporimeter and condenser through the cross valve switching-over.The new wind of open-air seasoning, low temperature after surface-type heat exchanger 11 preheatings of superheated water operation, passes through condenser 4 and humidifier 12 successively again, by the humidification that further heats up, new wind be heated send into behind the humidification indoor; The heat exhaust of condenser 4 is used for further promoting new wind leaving air temp; The preheating of 11 pairs of new wind of surface-type heat exchanger of hot water operation helps the stable operation of heat pump simultaneously.Indoor hot and humid air is discharged from outdoor through evaporator 2 after the cooling; Magnetic valve a8 opens, and magnetic valve b7 closes, and condensation heat recover 5 is not worked.
Three, the new blower fan group operation of transition season explanation
Xia Qiu changes according to the season, and when the outdoor air humiture is fit to, under central air-conditioning cooling-water machine ruuning situation, preferentially closes the compressor 1 of heat pump, and new wind overcomes new wind load through the surface-type heat exchanger 11 of chilled water operation; Under central air-conditioning cooling-water machine shutdown situation; New wind overcomes new wind and indoor load through the operation of heat pump; Cross when low when indoor temperature and humidity, close the compressor 1 of heat pump, air and the air from outdoor inlet chamber in outdoor from indoor discharge carry out ventilation;
Changing according to the season in the Winter-Spring, when outside air temperature is fit to, under central hot water machine ruuning situation, preferentially closes the compressor 1 of heat pump, and new wind overcomes new wind load through the surface-type heat exchanger 11 of hot water operation; Under central hot water machine shutdown situation; New wind overcomes new wind and indoor load through the operation of heat pump; When indoor temperature and humidity is too high, close the compressor 1 of heat pump, air and the air from outdoor inlet chamber in outdoor from indoor discharge carry out ventilation.
Claims (7)
1.
The new blower fan group of the full recuperation of heat damping of double-cold source heat pump temperature control, form by air draft part, new wind processing section, surface-type heat exchanger and heat pump; Heat pump comprises compressor 1, cross valve reversal valve 10, condenser 2, evaporimeter 4, condensation heat recover 5 and throttle part 9, and condensation heat recover 5 is arranged on new wind air outlet place; The air draft part is carried out by exhaust blower 3; Surface-type heat exchanger is arranged on new wind air inlet place; New wind processing section contains new blower fan 6 and humidifier 12 is formed.
2.
The new blower fan group of the full recuperation of heat damping of double-cold source heat pump temperature control is characterized in that saidThe c interface of four-way change-over valve 10 is connected with an end of condenser 2, and a interface is connected with the exhaust outlet of compressor 1, and the b interface is connected with the air entry of compressor 1, and the d interface is connected with an end of evaporimeter 4; The other end of condenser 2 is connected with the other end of evaporimeter 4 through throttle part 9.
3.
The new blower fan group of the full recuperation of heat damping of double-cold source heat pump temperature control is characterized in that saidAlso be connected with magnetic valve a8 between condenser 2 and the throttle part 9, magnetic valve a8 two ends are parallel with condensation heat recover 5, wherein, the end that magnetic valve a8 is connected with condenser 2 be connected with condensation heat recover 5 through magnetic valve b7; Condensation heat recover 5 is arranged on new wind air outlet place.
4.
The new blower fan group of the full recuperation of heat damping of double-cold source heat pump temperature control is characterized in that saidThe new blower fan 6 of new wind processing section is arranged on new wind air outlet place, and humidifier 12 is arranged between evaporimeter 4 and the condensation heat recover 5.
5.
The new blower fan group of the full recuperation of heat damping of double-cold source heat pump temperature control is characterized in that saidThe exhaust blower 3 of air draft part is arranged on indoor exhaust wind air outlet place, discharges condenser heat.
6.
The new blower fan group of the full recuperation of heat damping of double-cold source heat pump temperature control is characterized in that saidSurface-type heat exchanger 11 is arranged on new wind air inlet place, and new wind is carried out precooling;
When outdoor air is the high temperature humid air, compressor and starting 1, a of cross valve reversal valve 10, c interface are communicated with, and b, d interface are communicated with, and the surface-type heat exchanger 11 that the outdoor new wind that high temperature is moist moves through chilled water successively dehumidifies in advance; Through further cooling and degree of depth dehumidifying of evaporator 4, send into indoor after heating up through condensation heat recover 5 then again; The purpose of evaporimeter 4 is to reach the chilled water lower dew-point temperature that is beyond one's reach through refrigerant evaporation, further removes surface-type heat exchanger and can't handle the moisture in the new wind; Heating up through condensation heat recover 5 reduces its relative humidity again, to reach required air-out humiture; The air draft of indoor low temperature low humidity is discharged outdoor through condenser 2, help cooler condenser to strengthen its heat-sinking capability, reaches to reduce power consumption raising Energy Efficiency Ratio; If new wind leaving air temp is low excessively, need magnetic valve b7 is opened, magnetic valve a8 closes, the condensation heat of condensation heat recover 5 be used to raise new wind leaving air temp and reduce relative humidity; If new wind leaving air temp is too high, then need magnetic valve a8 is opened, magnetic valve b7 closes, and condensation heat recover 5 is not worked;
When outdoor air is the low temperature drying air, compressor and starting 1, a of cross valve reversal valve 10, d interface are communicated with, and b, c interface are communicated with, and realize the mutual conversion of evaporimeter and condenser through the cross valve switching-over; The new wind of open-air seasoning, low temperature after surface-type heat exchanger 11 preheatings of superheated water operation, passes through condenser 4 and humidifier 12 successively again, by the humidification that further heats up, new wind be heated send into behind the humidification indoor; The heat exhaust of condenser 4 is used for further promoting new wind leaving air temp; The preheating of 11 pairs of new wind of surface-type heat exchanger of hot water operation helps the stable operation of heat pump simultaneously; Indoor hot and humid air is discharged from outdoor through evaporator 2 after the cooling; Magnetic valve a8 opens, and magnetic valve b7 closes, and condensation heat recover 5 is not worked;
Xia Qiu changes according to the season, and when the outdoor air humiture is fit to, under central air-conditioning cooling-water machine ruuning situation, preferentially closes the compressor 1 of heat pump, and new wind overcomes new wind load through the surface-type heat exchanger 11 of chilled water operation; Under central air-conditioning cooling-water machine shutdown situation; New wind overcomes new wind and indoor load through the operation of heat pump; Cross when low when indoor temperature and humidity, close the compressor 1 of heat pump, air and the air from outdoor inlet chamber in outdoor from indoor discharge carry out ventilation;
Changing according to the season in the Winter-Spring, when outside air temperature is fit to, under central hot water machine ruuning situation, preferentially closes the compressor 1 of heat pump, and new wind overcomes new wind load through the surface-type heat exchanger 11 of hot water operation; Under central hot water machine shutdown situation; New wind overcomes new wind and indoor load through the operation of heat pump; When indoor temperature and humidity is too high, close the compressor 1 of heat pump, air and the air from outdoor inlet chamber in outdoor from indoor discharge carry out ventilation.
7.
The new blower fan group of the full recuperation of heat damping of double-cold source heat pump according to claim 3 temperature control is characterized in that saidCondensation heat recover 5 is connected in series with condenser 2, is used to reclaim the condensation heat of refrigeration system, and new wind leaving air temp and reduction relative humidity raise; If new wind leaving air temp is low excessively, need magnetic valve 7b is opened, magnetic valve a8 closes; If new wind leaving air temp is too high, then need magnetic valve a8 is opened, magnetic valve b7 closes, and condensation heat recover 5 is not worked.
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