CN1916530A - Cold convertor - Google Patents
Cold convertor Download PDFInfo
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- CN1916530A CN1916530A CNA2006100533321A CN200610053332A CN1916530A CN 1916530 A CN1916530 A CN 1916530A CN A2006100533321 A CNA2006100533321 A CN A2006100533321A CN 200610053332 A CN200610053332 A CN 200610053332A CN 1916530 A CN1916530 A CN 1916530A
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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]
- Y02B30/62—Absorption based systems
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- Sorption Type Refrigeration Machines (AREA)
Abstract
An inverter consists of generator, precooling /condensing module, condensing /subcooling module, absorption module, solution pump, the first pressure drop unit, energy recovery module, the second pressure drop unit, compressor and evaporator. It can convert low- level heat such solar energy and underground heat as well as some waste heat to be high-level electric energy being used as power supply of refrigeration unit of air-conditioning system.
Description
Technical field
The present invention relates to a kind of cold convertor, specifically is that the driving cold convertor is closed in a kind of low-grade heat and high-grade Electricity Federation, can be used as air-conditioning refrigeration plant.
Background technology
The energy is the assurance that production development, living standard improve, and good environment is the social development basis, realizes that coordinated development is human inevitable choice between the energy and environment, is necessary to utilize efficiently clean energy resource.Air-conditioning refrigeration system is the big power consumer, realizes economize on electricity in the air conditioner refrigerating field, energy-conservationly has great importance and be worth.The whole world has a large amount of low-grade heat to utilize, and a large amount of reproducible clean solar heat and underground heat are especially arranged, and the feasibility on possessing skills based on the air conditioner refrigerating of absorption refrigeration principle and have a series of advantage.It can be driven by low grade heat energy, is expected to realize effective conversion using of low-grade heat, and then realizes purpose energy-conservation, economize on electricity.Although heat drives exploitation that the absorption refrigeration principle has been used for low-grade heat, utilizes the field, conventional low-grade heat drives the absorption refrigeration technology and exists low-grade hot conversion using efficient low even can't utilize the defective of low-grade heat.This defective has seriously limited hot driving absorption refrigeration technology in the low-grade hot application of developing, utilizing the field, particularly utilizes low-grade heat is produced a large amount of needs in life, the production air conditioner refrigerating.Because the temperature of driving heat source has very large influence to the performance of absorption refrigeration circulation, temperature cross absorption refrigeration that low heat drives circulate its coefficient of performance (COP) can be very low, even can't drive the absorption refrigeration circulation effectively.For example, 80 ℃ of thermals source drive refrigeration system with lithium bromide absorption and produce 7 ℃ cold, and its coefficient of performance can only reach about 0.4; The refrigeration system with lithium bromide absorption of 70 ℃ of thermal source drivings is difficult to produce 7 ℃ cold.On the other hand, low grade heat energy has higher efficient when producing the higher cold of temperature, can not work even then very difficulty or efficient are low when producing the lower cold of temperature.For example, the thermal source of 80 ℃ and 70 ℃ is used to drive the lithium bromide absorption refrigeration system when producing 20 ℃ cold, and its coefficient of refrigerating performance is respectively 0.86 and 0.84.In addition, a large amount of low-grade heat sources often has discontinuous, unsettled characteristics, and for example solar radiation situation can constantly change with meteorological and round the clock conversion.Therefore, conventional low grade heat energy drives the absorption air-conditioning refrigeration plant need be equipped with extra back-up system usually, also can normally move under the situation that does not have to stablize or enough drive heat energy to guarantee air-conditioning refrigeration plant.Conventional low-grade heat drives the absorption type air-conditioner refrigeration system owing to need the driving of higher temperature position thermal source and back-up system and the economy of initial cost height, operation is relatively poor, thereby is difficult to promote the use of.
Summary of the invention
The objective of the invention is to drive the shortcoming that the absorption type air-conditioner refrigerating plant exists, a kind of cold convertor is provided at the low-grade heat of routine.
The generator refrigerant outlet links to each other with precooling/condensation module first refrigerant inlet; Precooling/condensation module first refrigerant outlet links to each other with cold module first refrigerant inlet of condensation/mistake; Cold module first refrigerant outlet of condensation/mistake links to each other with absorption module refrigerant inlet; Absorbing module absorption end of a period taphole links to each other through solution pump and energy recycling module absorption end of a period solution inlet; The energy recycling module absorbs the end of a period taphole and links to each other with generator absorption end of a period solution inlet; Generator generation end of a period taphole links to each other with energy recycling module generation end of a period solution inlet; Energy recycling module generation end of a period taphole links to each other with absorption module generation end of a period solution inlet through first dropping equipment; The compressor refrigerant outlet links to each other with energy recycling module second refrigerant inlet; Energy recycling module second refrigerant outlet links to each other with condensation/precooling module second refrigerant inlet; Condensation/precooling module second refrigerant outlet links to each other with cold module second refrigerant inlet of condensation/mistake; Cold module second refrigerant outlet of condensation/mistake links to each other with the evaporator refrigerant inlet through second dropping equipment; At last, the evaporator refrigerant outlet links to each other with the compressor refrigerant inlet.
Cold convertor of the present invention closes driving by low-grade heat and high-grade Electricity Federation, solved the difficult problem that low-grade heat is difficult to produce the air conditioner refrigerating of needs, make the high-grade electricity have high air conditioner refrigerating efficient simultaneously, finally make the total power conversion utilization ratio of system obtain big raising.It can utilize 60 ℃ of left and right sides low grade heat energies to obtain to need the air conditioner refrigerating of lower temperature efficiently and only need to consume few high-grade electric energy.In addition, it can also effectively utilize instability, discontinuous low grade heat energy, for example solar energy, underground heat and used heat.The present invention also has advantages such as initial cost is low, performance driving economy is good, can better realize the utilization of low-grade heat in the air conditioner refrigerating field, and especially solar energy and underground heat clean like this, regenerative resource is in the utilization in air conditioner refrigerating field.
Description of drawings
Fig. 1 is the cold convertor structural representation;
Fig. 2 is the embodiment of the invention 1 structural representation;
Fig. 3 is the embodiment of the invention 2 structural representations.
The specific embodiment
As shown in Figure 1, cold convertor is made of low-grade refrigeration unit and high-grade refrigeration unit.Generator 1 refrigerant outlet links to each other with precooling/condensation module 2 first refrigerant inlets, then through cold module 3 first refrigerant inlets of condensation/mistake, outlet links to each other with absorption module 4 refrigerant inlets, absorbing module 4 generation end of a period solution inlets links to each other with energy recycling module 7 generation end of a period tapholes through first dropping equipment 6, absorbing module 4 absorption end of a period tapholes links to each other through solution pump 5 and energy recycling module 7 absorption end of a period solution inlets, the absorption end of a period taphole of energy recycling module 7 absorbs end of a period solution inlet with generator 1 respectively with generation end of a period solution inlet and links to each other with generation end of a period taphole, has so just constituted low-grade refrigeration unit.Compressor 8 refrigerant outlets link to each other with second dropping equipment, 9 inlets through second refrigerant inlet, the outlet of energy recycling module 7, precooling/condensation module 2 and the cold module 3 of condensation/mistake, 9 outlets of second dropping equipment link to each other with evaporimeter 10 inlets, evaporimeter 10 outlets link to each other with compressor 8 refrigerant inlets again, have so then constituted the high-grade refrigeration unit.
First cold-producing medium that this cold convertor adopts can be materials such as water, R717, R134a and R22; The absorbent that absorbs first cold-producing medium is respectively water lithium-bromide solution, ammonia spirit and dimethyl formamide or DEF or tetraethylene glycol dimethyl ether etc.Second cold-producing medium can be materials such as R134a, R407C, R410A and R22.
Above-mentioned precooling/condensation module 2 has precooling/condenser 12, the second cold-producing medium storage tank 20 and control valve 21; Precooling/condenser 12 first refrigerant inlets are exactly precooling/condensation module first refrigerant inlet; Precooling/condenser 12 first refrigerant outlets are exactly precooling/condensation module first refrigerant outlet; Precooling/condenser 12 second refrigerant inlets are exactly precooling/condensation module second refrigerant inlet; Precooling/condenser 12 second refrigerant outlets link to each other with the second cold-producing medium storage tank, 20 inlets, first outlet of the second cold-producing medium storage tank, 20 bottoms links to each other with control valve 21 inlet, and the outlet that second of the second cold-producing medium storage tank, 20 tops export then with control valve 21 converges common formation precooling/condensation module 2 second refrigerant outlets.
The cold module 3 of condensation/mistake has the 3rd dropping equipment 13, condensation/subcooler 14; The inlet of the 3rd dropping equipment 13 is exactly cold module 3 first refrigerant inlets of condensation/mistake; 13 outlets of the 3rd dropping equipment link to each other with condensation/subcooler 14 low-pressure sides inlet, and the outlet of condensation/subcooler 14 low-pressure sides is exactly first refrigerant outlet of the cold module 3 of condensation/mistake; Condensation/subcooler 14 high-pressure sides inlet is exactly cold module 3 second refrigerant inlets of condensation/mistake; The outlet of condensation/subcooler 14 high-pressure sides is exactly cold module 3 second refrigerant outlets of condensation/mistake.
The cold module 3 of condensation/mistake has the first cold-producing medium storage tank 26, the 3rd dropping equipment 27 and condensation/subcooler 28; The first cold-producing medium storage tank, 26 inlets are exactly cold module 3 first refrigerant inlets of condensation/mistake; 26 outlets of the first cold-producing medium storage tank link to each other with condensation/subcooler 28 low-pressure sides inlet through the 3rd dropping equipment 27 inlets, outlet, and the outlet of condensation/subcooler 28 low-pressure sides is exactly cold module 3 first refrigerant outlets of condensation/mistake; Condensation/subcooler 28 high-pressure sides inlet is exactly cold module 3 second refrigerant inlets of condensation/mistake; The outlet of condensation/subcooler 28 high-pressure sides is exactly cold module 3 second refrigerant outlets of condensation/mistake.
As shown in Figure 2, it is the cold-producing medium of high-grade refrigeration unit that embodiment 1 adopts R407C, and water is the cold-producing medium of low-grade refrigeration unit, and lithium bromide water solution is as absorbent.Precooling/condensation module 2 is made up of precooling/condenser 12, R407C storage tank 20 and control valve 21 in this embodiment; The cold module 3 of condensation/mistake is made up of the 3rd dropping equipment 13 and condensation/subcooler 14; Absorbing module 4 is made up of absorber 15; Energy recycling module 7 reclaims heat exchanger 18 by energy and forms.
Present embodiment mainly is made up of three loops: low-grade refrigeration unit refrigerating circuit, low-grade refrigeration unit absorption circuit, the refrigerating circuit of high-grade refrigeration unit.
In the low-grade refrigeration unit refrigerating circuit, water vapour is heated effusion in generator 11, and high-temperature water vapor enters in precooling/condenser 12 and is condensed with the cooling medium heat exchange.Condensed cold-producing medium water enters condensation/subcooler 14 after dropping equipment 13 throttlings low temperature side carries out sweat cooling, is used for condensation or cross cold-producing medium R407C in the cold high-grade refrigeration unit.Absorbed by bromize lithium concentrated solution in the water vapour inflow absorber 15 after the evaporation, so far finished the circulation of low-grade refrigeration unit refrigerating circuit.
In the low-grade refrigeration unit absorption circuit, the concentrated solution that has absorbed water vapour becomes weak solution, after solution pump 16 boosts, flow into energy then and reclaim heat exchanger 18 and carry out heat exchange with concentrated solution that flows out from generator and the high temperature R407C steam the high-grade refrigeration unit respectively, flow into again at last and be heated in the generator 11 and finish the circulation of its absorption circuit.
In the refrigerating circuit of high-grade refrigeration unit, from the high temperature R407C steam that compressor 19 flows out, be introduced into energy and reclaim the heat energy that heat exchanger 18 is recovered high temperature section, then enter precooling/condenser 12 by precooling or condensation.According to the refrigerating capacity of the operating condition and the needs of refrigeration system, guarantee that by the adjusting of R407C storage tank 20 and control valve 21 R407C is condensed still by precooling in precooling/condenser.If low-grade refrigeration unit can provide enough refrigerating capacitys to come the condenser heat that R407C discharged in absorption condensation/subcooler, R407C is only removed the part sensible heat by precooling in precooling/condenser so, the state that flows into R407C storage tank 20 then and export with gas phase from first of its bottom flows out, and enters condensation/subcooler again and is condensed; If low-grade refrigeration unit can't provide enough refrigerating capacitys to come the condenser heat that R407C discharged in absorption condensation/subcooler, then closed control valve 21 gathers liquid phase R407C cold-producing medium in the R407C storage tank, R407C is condensed in precooling/condenser, the state that exports with liquid phase from second of R407C storage tank top flows out then, enters condensation/subcooler again and is further cooled.The R407C that flows through condensation/subcooler 14 enters evaporimeter 23 sweat coolings after 22 throttlings of second dropping equipment, the refrigerant vapour of generation is inhaled into by the inlet of compressor 19 and finishes the circulation of whole refrigerating circuit.
Above-mentioned said generator and absorber all are heat exchanger, and they can be shell and tubes, can be immersion or fountain, also can be other form heat exchangers, and its heat exchanger tube can be a common tube, also can be intensify heat transfer pipe.
Precooling/condenser is a heat exchanger, and they can be single channel, two passages or multichannel shell and tube, also can be other form heat exchanger, and its heat exchanger tube can be a common tube, also can be intensify heat transfer pipe.Cooling medium can be water or air, also can be other material.
Condensation/subcooler is a heat exchanger, and that its high-pressure side is flow through is R407C, and it can be gas phase or liquid phase fluid, and what its low-pressure side flow through is water, and it is sweat cooling inside.Condensation/subcooler also can be other form heat exchanger to be shell and tube or shell-and-tube exchanger, and its heat exchanger tube can be a common tube, also can be intensify heat transfer pipe, also can be immersion, fountain or dripping type.
It is a heat exchanger that energy reclaims heat exchanger, and they can be two passages or multichannel shell and tube or shell-and-tube exchanger, also can be other form heat exchangers, and its heat exchanger tube can be a common tube, also can be intensify heat transfer pipe.
Evaporimeter is a heat exchanger, and what its low-pressure side flow through is R407C steam, and it can be gas phase or liquid phase fluid, and it is sweat cooling inside; An other side flow be the refrigerating medium or the medium that need be cooled.Evaporimeter can be shell and tube, shell-and-tube exchanger, also can be other form heat exchanger, and its heat exchanger tube can be a common tube, also can be intensify heat transfer pipe, can be immersion, fountain or dripping type.
Compressor can be to decide frequency or frequency-changeable compressor, can be positive displacement or centrifugal compressor.
Dropping equipment can be U type pipe, capillary, choke valve, also can be other dropping equipment.
The effect that solution pump plays and promotes fluid pressure, carries liquid, it can be canned motor pump, magnetic force driving pump and membrane pump, also can be centrifugal pump or gear pump.
Control valve is used for controlling flowing of R407C storage tank fluid, thus the state of R407C outflow precooling/condenser in the control high-grade refrigeration unit, and control valve can be that automatic valve also can be a hand-operated valve.
Because the cold that the high-grade refrigeration unit is produced low-grade refrigeration unit by the energy coupling energy of condensation/subcooler in this device is converted to the high-grade cold that needs effectively, also can reclaim simultaneously the elevated temperature heat that cold-producing medium discharges in the high-grade refrigeration unit, therefore has very high COP, and can more effectively utilize low-grade heat energy, be very suitable for the occasion of stable low-grade heat source supply.
As shown in Figure 3, it is the cold-producing medium of high-grade refrigeration unit that embodiment 2 adopts R407C, and water is low-grade refrigeration unit cold-producing medium, and lithium bromide water solution is as its absorbent.Precooling/condensation module 2 is made up of precooling/condenser 25, R407C storage tank 36 and control valve 37 in this embodiment, the cold module 3 of condensation/mistake is made up of water storage tank 26, the 3rd dropping equipment 27 and condensation/subcooler 28, absorb module 4 and be made up of absorber 29, control valve 30 and weak solution storage tank 31, energy recycling module 7 reclaims heat exchanger 34 by energy and forms.
Three loops of present embodiment: low-grade refrigeration unit refrigerating circuit, low-grade refrigeration unit absorption circuit, the loop that is different from embodiment 1 in the refrigerating circuit of high-grade refrigeration unit is respectively described below.
In the low-grade refrigeration unit refrigerating circuit, water vapour is heated in generator 24 and overflows, and high-temperature water vapor enters in precooling/condenser 25 and is condensed with the cooling medium heat exchange, then enters water storage tank 26.According to the supply of system drive thermal source and the situation of cooling load, realize that through water storage tank 26 surplus of the cold-producing mediums refrigerant flow that makes the 3rd dropping equipment 27 of flowing through of filling a vacancy can guarantee that refrigeration system obtains stable and enough refrigeration.If the cooling load that refrigeration system needs is bigger, then transfer the discharge of the 3rd dropping equipment 27 of flowing through greatly; On the contrary, if the cooling load of refrigeration system is smaller, then turn the discharge of the 3rd dropping equipment 27 of flowing through down, unnecessary refrigerant liquid then is stored in the water storage tank 26.Condensed cold-producing medium water enters the low-pressure side of condensation/subcooler 28 and carries out sweat cooling after 27 throttlings of the 3rd dropping equipment, be used for condensation or cross the cold-producing medium R407C of cold high-grade refrigeration unit.Absorbed by bromize lithium concentrated solution in the water vapour inflow absorber 29 after the evaporation, so far finished the circulation of low-grade refrigeration unit refrigerating circuit.
In the low-grade refrigeration unit absorption circuit, the bromize lithium concentrated solution that has absorbed water vapour becomes weak solution, flowing into weak solution storage tank 31 through control valve 30 then mixes with the already present weak solution in the inside, mixed weak solution flows into energy and reclaims heat exchanger 34 and carry out heat exchange with concentrated solution that flows out from generator and the high temperature R407C the high-grade refrigeration unit respectively after solution pump 31 boosts, flow into that generator 24 is heated at last again and the circulation of finishing its absorption circuit.
Control valve is used for controlling the flow of R407C storage tank or solution storage tank fluid in the present embodiment, thereby R407C flows out flowing of weak solution in the state of precooling/condenser or the absorber in the control high-grade refrigeration unit, and control valve can be that automatic valve also can be a hand-operated valve.
Other content of present embodiment is identical with embodiment 1.
Because low-grade refrigeration unit has water storage tank 26, control valve 30 and bromize lithium dilute solution storage tank 31, the function that can store, regulate low-grade refrigeration unit cooling load, like this and then can guarantee the stable refrigeration of whole refrigeration system acquisition.Therefore, discontinuous, the unsettled occasion of the low-grade heat source that present embodiment is very suitable for driving, for example solar energy, underground heat and used heat.
Claims (7)
1. a cold convertor is characterized in that generator (1) refrigerant outlet links to each other with precooling/condensation module (2) first refrigerant inlets; Precooling/condensation module (2) first refrigerant outlets link to each other with cold module (3) first refrigerant inlets of condensation/mistake; Cold module (3) first refrigerant outlets of condensation/mistake link to each other with absorption module (4) refrigerant inlet; Absorbing module (4) absorption end of a period taphole links to each other through solution pump (6) and energy recycling module (7) absorption end of a period solution inlet; Energy recycling module (7) absorbs the end of a period taphole and links to each other with generator (1) absorption end of a period solution inlet; The end of a period taphole takes place and links to each other with energy recycling module (7) generation end of a period solution inlet in generator (1); The end of a period taphole takes place and links to each other through first dropping equipment (5) and absorption module (4) generation end of a period solution inlet in energy recycling module (7); Compressor (8) refrigerant outlet links to each other with energy recycling module (7) second refrigerant inlets; Energy recycling module (7) second refrigerant outlets link to each other with condensation/precooling module (2) second refrigerant inlets; Condensation/precooling module (2) second refrigerant outlets link to each other with cold module (3) second refrigerant inlets of condensation/mistake; Cold module (3) second refrigerant outlets of condensation/mistake link to each other with evaporimeter (10) refrigerant inlet through second dropping equipment (9); At last, evaporimeter (10) refrigerant outlet links to each other with compressor (8) refrigerant inlet.
2. a kind of cold convertor according to claim 1 is characterized in that said precooling/condensation module (2) has precooling/condenser (12), the second cold-producing medium storage tank (20) and control valve (21); Precooling/condenser (12) second refrigerant outlets link to each other with the second cold-producing medium storage tank (20) inlet, and first outlet of the second cold-producing medium storage tank (20) bottom links to each other with control valve (21) inlet.
3. a kind of cold convertor according to claim 1 is characterized in that said condensation/cold module of mistake (3) has the 3rd dropping equipment (13) and condensation/subcooler (14); The 3rd dropping equipment (13) outlet links to each other with condensation/subcooler (14) first refrigerant inlets.
4. a kind of cold convertor according to claim 1 is characterized in that said condensation/cold module of mistake (3) has the first cold-producing medium storage tank (26), the 3rd dropping equipment (27) and condensation/subcooler (28); The outlet of the first cold-producing medium storage tank (26) links to each other with the 3rd dropping equipment (27) inlet, and the 3rd dropping equipment (27) outlet links to each other with condensation/subcooler (28) first refrigerant inlets.
5. a kind of cold convertor according to claim 1 is characterized in that said absorption module (4) has absorber (29), control valve (30), solution storage tank (31); Absorber (29) absorbs the end of a period taphole and links to each other with solution storage tank (31) inlet through control valve (30).
6. a kind of cold convertor according to claim 1 is characterized in that said first cold-producing medium and second cold-producing medium are monobasic or polynary cold-producing medium.
7. a kind of cold convertor according to claim 1 is characterized in that said solution is for absorbing the material of first cold-producing medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100533321A CN1916530A (en) | 2006-09-11 | 2006-09-11 | Cold convertor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100533321A CN1916530A (en) | 2006-09-11 | 2006-09-11 | Cold convertor |
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| Publication Number | Publication Date |
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| CN1916530A true CN1916530A (en) | 2007-02-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2006100533321A Pending CN1916530A (en) | 2006-09-11 | 2006-09-11 | Cold convertor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101900437A (en) * | 2010-07-16 | 2010-12-01 | 浙江大学 | Solar water heating system for using summer residual heat to dehumidify solution |
| US10458685B2 (en) * | 2016-11-08 | 2019-10-29 | Heatcraft Refrigeration Products Llc | Absorption subcooler for a refrigeration system |
-
2006
- 2006-09-11 CN CNA2006100533321A patent/CN1916530A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101900437A (en) * | 2010-07-16 | 2010-12-01 | 浙江大学 | Solar water heating system for using summer residual heat to dehumidify solution |
| CN101900437B (en) * | 2010-07-16 | 2012-12-26 | 浙江大学 | Solar water heating system for using summer residual heat to dehumidify solution |
| US10458685B2 (en) * | 2016-11-08 | 2019-10-29 | Heatcraft Refrigeration Products Llc | Absorption subcooler for a refrigeration system |
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