GB2076523A - Absorption heat pump - Google Patents

Absorption heat pump Download PDF

Info

Publication number
GB2076523A
GB2076523A GB8017030A GB8017030A GB2076523A GB 2076523 A GB2076523 A GB 2076523A GB 8017030 A GB8017030 A GB 8017030A GB 8017030 A GB8017030 A GB 8017030A GB 2076523 A GB2076523 A GB 2076523A
Authority
GB
United Kingdom
Prior art keywords
fluid
heat
adsorbent
working fluid
valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB8017030A
Other versions
GB2076523B (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ExxonMobil Technology and Engineering Co
Original Assignee
Exxon Research and Engineering Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Exxon Research and Engineering Co filed Critical Exxon Research and Engineering Co
Priority to GB8017030A priority Critical patent/GB2076523B/en
Publication of GB2076523A publication Critical patent/GB2076523A/en
Application granted granted Critical
Publication of GB2076523B publication Critical patent/GB2076523B/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B27/00Machines, plants or systems, using particular sources of energy
    • F25B27/002Machines, plants or systems, using particular sources of energy using solar energy
    • F25B27/007Machines, plants or systems, using particular sources of energy using solar energy in sorption type systems
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B15/00Sorption machines, plants or systems, operating continuously, e.g. absorption type
    • F25B15/02Sorption machines, plants or systems, operating continuously, e.g. absorption type without inert gas
    • F25B15/06Sorption machines, plants or systems, operating continuously, e.g. absorption type without inert gas the refrigerant being water vapour evaporated from a salt solution, e.g. lithium bromide
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B30/00Heat pumps
    • F25B30/04Heat pumps of the sorption type
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00Adapting or protecting infrastructure or their operation
    • Y02A30/27Relating to heating, ventilation or air conditioning [HVAC] technologies
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/62Absorption based systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Sorption Type Refrigeration Machines (AREA)

Abstract

An absorption heat pump operative to provide heat and/or refrigeration and energized by heat from a solar panel (13) (or other source) is maintained in operation when the solar panel is inoperative by the adsorption of working fluid vapour evaporated from the evaporator (18) in adsorbent (27). The heat of adsorption is recovered in heat sink fluid circulated through a heat transfer coil (28) in heat exchange relationship with the adsorbent (27). When the solar panel (13) subsequently operates, the flow of heat sink fluid through the heat transfer coil (28) is interrupted and replaced by a flow of hot fluid from the solar panel (13). Adsorbed working fluid vapour is desorbed from the adsorbent (21) and condensed in the condenser (15) thereby regenerating the adsorbent for further use. Water may be used as the working fluid, aqueous lithium bromide as the absorbent liquid, and the adsorbent (27) may be activated charcoal. <IMAGE>

Description

SPECIFICATION An absorption heat pump system The present invention relates to an absorption heat pump system.
The present invention provides an absorption heat pump system comprising a generator wherein a rich solution of a working fluid in an absorbent liquid is separated by heating into vapour phase working fluid and a weakened solution, a condenser wherein separated vapour phase working fluid is condensed by heat exchange with a fluid or other heat sink at a temperature below the condensation temperature of the working fluid, an evaporator for receiving condensed working fluid, at a temperature not exceeding the condensation temperature, from the condenser via a pressure-reducing valve and wherein liquid phase working fluid is arranged to be evaporated by receiving heat from a low temperature heat source, an absorber connected for receiving vapourized working fluid from the evaporator and weakened solution from the generator and operable under conditions such that vapourized working fluid received therein dissolves in the weakened solution to form the said rich solution of working fluid in absorbent liquid, circulating means for circulating the said rich solution from the absorber to the generator, a body of adsorbent selected to be capable of adsorbing working fluid with the release of heat of adsorption, a first conduit for conducting vaporized working fluid from the evaporator into contact with the adsorbent via a first valve, a second conduit for conducting desorbed working fluid from the adsorbent to the condenser via a second valve, heating means operable to heat the adsorbent and thereby cause desorption of adsorbed fluid therefrom when the second valve is open and the first valve is closed, and cooling means operable to cool the adsorbent when the first valve is open and the second valve is closed thereby to promote the adsorption of vapourized working fluid in the adsorbent with the release of heat.
The provision of the adsorbent and the various means for heating and cooling same and for causing working fluid to be desorbed from and adsorbed in the adsorbent enable the system to function either four regfrigeration or heating when the heating of the rich solution in the generator is interrupted. The system is preferably so constructed and/or arranged that when there is an interruption in the heating df the rich solution in the generator, the second valve is closed and the first valve is opened whereby working fluid from the evaporator can continue to evaporate therefrom (thereby providing refrigeration, if desired) because it is adsorbed by the adsorbent, and the heat of adsorption thus released is available for heating purposes.
The amount of heat released depends upon the working fluid and the adsorbent. When the former is water and the latter is active charcoal, about 920 kJ of energy are available per kg of charcoal and a temperature rise of the order of up to 500C would occur during adsorption within the temperature range of, e.g., 5 to 400C, the temperature rise being highest at and below the lower end of the said temperature range and being less at, and higher than, the upper end of the said temperature range.
For most systems, the highest coefficient of performance (COP) is likely to be realized when the amount of energy stored per unit weight of adsorbent containing adsorbed working fluid is equal to, or approximately equal to, the latent heat of condensation of the working fluid at the highest gross or apparent adsorption temperature attained during operation of the system when the adsorption of working fluid is the sole source of heat to operate the system.
Preferably, the heating means comprises a heat exchange device and a first control valve arranged for the passage of a hot fluid from a source of hot fluid in heat exchange relationship with the adsorbent, the hot fluid being cooled during said passage when adsorbed working fluid is desorbed from the adsorbent. The cooled hot fluid is preferably returned to the hot fluid source for reheating.
The hot fluid is preferably a portion of a hot fluid which is passed in heat transfer relationship with the rich solution in the generator for heating the said rich solution, and wherein the system comprises a third conduit for conducting a portion of the hot fluid to the heat exchange device via a third valve which is arranged and/or constructed to be open when the second valve is open and the first valve is closed.
The system preferably comprises means for heating the hot fluid, and means for heating the hot fluid may comprise a solar panel or a boiler or an electrical resistance heater or a heat exchanger or any combination of at least two of the foregoing.
The cooling means may comprise a heat exchange device arranged for the passage of a cool fluid from a source of cool fluid in heat exchange relationship with the adsorbent, the cool fluid being heated during said passage when vapourized working fluid is being adsorbed by said adsorbent. The heated cool fluid is available for use as a source of heat, particularly when the said means for heating the hot fluid is not operating or is operating to such an inadequate extent that it does not furnish heat at a required rate and/or temperature.
The said cool fluid is preferably a portion of a fluid which is passed in heat transfer relationship with the heat sink or with working fluid in the condenser for removing at least the latent heat of condensation thereof, and wherein the system comprises a fourth conduit for conducting a portion of said cool fluid to the heat exchange device via a fourth valve which is arranged and/or constructed to be open when the first valve is open and the second valve is closed and the heating means is not operating.
A common heat exchange device may be provided for the passage of hot and cool fluids in heat exchange relationship with the adsorbent.
This is convenient in many instances where the hot and cool fluids have substantially the same composition.
The invention further provides a system comprising hot and cool fluids which have substantially the same composition. The said hot and cool fluids may comprise a mineral or synthetic oil or oil composition which is stable and liquid over the range of temperature and pressure conditions of the system during operation.
The working fluid may be water, and in one embodiment, the rich and weakened solutions comprise lithium bromide and water. A suitable adsorbent for this embodiment is activated charcoal.
The invention is now further described with reference to a non-limitative embodiment thereof, given by way of example only, and with reference to the accompanying drawing which is a flow sheet of a heat pump system according to the invention. In the drawing, only those items which are relevant for an understanding of the system are indicated.
Referring to the drawing, the system 10 comprises a generator 11 wherein a rich solution of water, constituting the working fluid, in aqueous lithium bromide constituting the absorbent liquid, is heated by the passage of a hot fluid through heating coil 12 in contact with the rich solution to separate water vapour and leave a water-depleted absorbent liquid. The hot fluid is furnished, in this embodiment, from a solar panel 13, although it will be appreciated that any other source of heat could be used instead.
The water vapour passes from the generator 11 via a conduit 14 to a condenser 1 5 wherein it is condensed substantially isobarically by the abstraction of at least its heat of condensation by a heat sink fluid passing through a heat transfer coil 16 in the condenser 15, the heat sink fluid thereby being heated.
Condensed water passes via a throttle valve 1 7 to an evaporator 1 8 maintained at a lower pressure than the condenser 1 5, whereby the water temperature is further reduced. The water in the evaporator contacts a heat transfer coil 19 through which circulates a fluid from a low temperature heat source such as atmospheric air or water from a lake, river or other extensive heat source.The temperature and pressure of the water in the evaporator 1 8 are such that water evaporates by abstracting its latent heat of evaporation from the fluid in the heat transfer coil 19, and the thus vaporized water passes via a conduit 20 and via a regulating valve 21 into an absorber 22 operating at about the same pressure as the evaporator 1 9. Water-depleted absorbent liquid passes from the generator 11 to the absorber 22 via a regulating valve 23 under the influence of the pressure difference between the generator 11 and the absorber 22. The absorber is so constructed and/or arranged to facilitate the absorption of water vapour in the water depleted liquid thereby forming a water-rich solution of substantially the same composition as that in the generator 11.The absorption is facilitated by abstracting heat from the solution in the absorber 22 by circulating a cooling fluid through a cooling coil 24. The cooling fluid abstracts sensible heat and heat of dissolution. It will be seen that the cooling fluid employed in coil 24 is a portion of the heat sink fluid circulated in parallel thereto via heat transfer coil 1 6 in the condenser 1 5. It is not essential to abstract heat from the absorber 22 using the same fluid as that employed in the coil 1 6 of the condenser, and if necessary or desirable, separately circulated fluids (which may be the same or different) may be passed through the coils 16 and 24.
Water-rich liquid is circulated from the absorber 22 to the generator 11 by a mechanical pump 25 (or other effective liquid-circulating means).
It will be appreciated that when heat is available from heating coil 1 2 as a result of the capture of solar energy by the solar panel 1 3, the system 10 as thus far described will discharge heat to the heat sink fluid circulating through coil 1 5 in the condenser 1 6 and abstract heat at a lower temperature from the low temperature fluid passing through the coil 1 9 in the evaporator 18, provided that power is available to circulate the fluids. However, the system as so far described would be inoperative when no solar energy is captured by the solar panel 1 3 (e.g. at night or when the sun is excessively obscured by cloud, mist or fog).The system 10 therefore includes means for ensuring continues operation at least for some time after the solar panel 13 fails to provide hot fluid in the heating coil 1 2. These means comprise an adsorber 26 containing a body or bed 27 of activated charcoal or other suitable adsorbent, a valve V1 for controlling the passage out of the adsorber 26 of desorbed water vapour into conduit 14 and a valve V4 for controlling the passage into adsorber 26 of water vapour from conduit 20. A heating and cooling coil 28 extends through the adsorber 26 in a suitable manner for heating and cooling the adsorbent 27 relatively efficiently to cause desorption and adsorption of water from the adsorbent 27.
A conduit 29 connects one end of the coil 28 to the exit sides of two valves V2 and V5 and a conduit 30 connects the opposite end of the coil 28 to the exit sides of two valves V2 and Ve.
When heat is available at the heating coil 12 as a result of acceptable normal operation of the solar panel 13, valves V5 and V6 are closed and valves V2 and V3 are open so that some of the hot fluid from the solar panel 1 3 passes through the coil 28 and heats the adsorbent 27 in the adsorber 26. Adsorbed water vapour is desorbed from the adsorbent and with valve V, open at one end of the adsorber and valve V4 closed at the other end, the desorbed water vapour passes into conduit 14 and thence to the condenser 15 where it surrenders its latent heat of condensation thereby adding to the heat already available at the condenser.
When no heat is provided at the heat coil 12 because the panel 1 3 is inoperative or receiving an inadequate amount of solar energy, valves V2 and V3 are closed and valves V5 and V8 are opened to permit the passage of some of the heat sink fluid through the coil 28 to cool the adsorbent 27 in the adsorber 26. The valve V, is closed and the valve V4 is open thereby permitting water vapour generated in the evaporator 1 8 tp pass into the adsorber 26 wherein it is adsorbed in the adsorbent 27 with the generation of its heat of adsorption at the adsorption temperature.This would cause a temperature rise of approximately 45 to 500C if the adsorbent temperature is about 20 to 25"C under optimum practical operating conditions, and the heat liberated at the temperatures of 65 and 750C is recovered in the heat sink fluid passing through the coil 28. Thus, until the adsorbent 27 attains equilibrium with the water vapour evaporating from evaporator 18, the system 10 can operate without energy from the solar panel 1 3 to provide refrigeration in the fluid passing through the coil 1 9 of the evaporator 1 8 or heat in the heat sink fluid passing through the coil 1 6 of the condenser 1 5 or both regrigeration and heat depending upon the design of the system 10, as will be appreciated by those skilled in the art.When the solar panel 13 is inoperative, it may be desirable and/or preferred in most circumstances to close valves 21 and 17 and to stop the pump 25.
When the solar panel 1 3 again becomes operative, the valves V4, V5 and V6 are closed and the valves V,, V2 and V3 are opened so that the heat pump operates in the normal way and additionally, water is desorbed from the adsorbent 27 by the passage of some of the hot fluid, generated by the solar panel, through the coil 28 in heat exchange contact with the adsorbent.
It will be appreciated from the foregoing that the system 10 of the invention comprises a potential energy store which is operable when the adsorbent 27 contains less than the equilibrium amount of water due to a reduction of the entropy of the adsorbent-water vapour system. The potential energy involves no phase change, or overt chemical reaction or elevated temperature requiring thermal insulation.

Claims (14)

1. An absorption heat pump system comprising a generator wherein a rich solution of a working fluid in an absorbent liquid is separated by heating into vapour phase working fluid and a weakened solution, a condenser wherein separated vapour phase working fluid is condensed by heat exchange with a fluid or other heat sink at a temperature below the condensation temperature of the working fluid, an evaporator for receiving condensed working fluid, at a temperature not exceeding the condensation temperature, from the condenser via a pressure-reducing valve and wherein liquid phase working fluid is arranged to be evaporated by receiving heat from a low temperature heat source, an absorber connected for receiving vapourized working fluid from the evaporator and weakened solution from the generator and operable under conditions such that vapourized working fluid received therein dissolves in the weakened solution to form the said rich solution of working fluid in absorbent liquid, circulating means for circulating the said rich solution from the absorber to the generator, a body of adsorbent selected to be capable of adsorbing working fluid with the release of heat of adsorption, a first conduit for conducting vaporized working fluid from the evaporator into contact with the adsorbent via a first valve, a second conduit for conducting desorbed working fluid from the adsorbent to the condenser via a second valve, heating means operable to heat the adsorbent and thereby cause desorption of adsorbed fluid therefrom when the second valve is open and the first valve is closed, and cooling means operable to cool the adsorbent when the first valve is open and the second valve is closed thereby to promote the adsorption of vapourized working fluid in the adsorbent with the release of heat.
2. A system according to claim 1 in which the heating means comprises a heat exchange device and a first control valve arranged for the passage of a hot fluid from a source of hot fluid in heat exchange relationship with the adsorbent, the hot fluid being cooled during said passage when adsorbed working fluid is desorbed from the adsorbent.
3. A system according to claim 2 in which the hot fluid is a portion of a hot fluid which is passed in heat transfer relationship with the rich solution in the generator for heating the said rich solution, and wherein the system comprises a third conduit for conducting a portion of the hot fluid to the heat exchange device via a third valve which is arranged and/or constructed to be open when the second valve is open and the first valve is closed.
4. A system according to claim 2 or claim 3 comprising means for heating the hot fluid.
5. A system according to the claim 4 in which the means for heating the hot fluid comprises a solar panel or a boiler or an electrical resistance heater or a heat exchanger or any combination of at least two of the foregoing.
6. A system according to any one of claims 1 to 5 in which the cooling means comprises a heat exchange device arranged for the passage of a cool fluid from a source of cool fluid in heat exchange relationship with the adsorbent, the cool fluid being heated during said passage when vapourized working fluid is being adsorbed by said adsorbent.
7. A system according to claim 6 in which the cool fluid is a portion of a fluid which is passed in heat transfer relationship with working fluid in the condenser for removing at least the latent heat of condensation thereof, and wherein the system comprises a fourth conduit for conducting a portion of said cool fluid to the heat exchange device via a fourth valve which is arranged and/or constructed to be open when the first valve is open and the second valve is closed and the heating means is not operating.
8. A system according to any one of claims 2 to 5 in combination with claim 6 or claim 7 as appended to claim 6 in which a common heat exchange device is provided for the passage of hot and cool fluids in heat exchange relationship with the adsorbent.
9. A system according to claim 8 comprising hot and cool fluids which have substantially the same composition.
10. A system according to claim 9 in which the hot and cool fluids comprise a mineral or synthetic oil or oil composition which is stable and liquid over the range of temperature and pressure conditions of the system during operation.
11. A system according to any one of claims 1 to 10 in which the working fluid is water.
1 2. A system according to any one of claims 1 to 11 in which the rich and weakened solution comprises lithium bromide and water.
1 3. A system according to any one of claims 1 to 12 in which the adsorbent is activated charcoal.
14. An adsorption heat pump system substantially as hereinbefore described.
1 5. An adsorption heat pump system substantially as described with reference to the drawing.
GB8017030A 1980-05-22 1980-05-22 Absorption heat pump Expired GB2076523B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8017030A GB2076523B (en) 1980-05-22 1980-05-22 Absorption heat pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8017030A GB2076523B (en) 1980-05-22 1980-05-22 Absorption heat pump

Publications (2)

Publication Number Publication Date
GB2076523A true GB2076523A (en) 1981-12-02
GB2076523B GB2076523B (en) 1984-12-05

Family

ID=10513620

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8017030A Expired GB2076523B (en) 1980-05-22 1980-05-22 Absorption heat pump

Country Status (1)

Country Link
GB (1) GB2076523B (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0061888A2 (en) * 1981-03-27 1982-10-06 Exxon Research And Engineering Company Staged adsorption/resorption heat pump
EP0105603A2 (en) * 1982-09-03 1984-04-18 Exxon Research And Engineering Company A tandem heat pump
NL1013802C2 (en) * 1999-12-09 2001-06-12 Legerlede Holding B V Method for cooling gas-form, liquid or solid medium using solar energy employs absorption cooling system and properties of absorption fluid, drive gas as cooling gas and auxiliary gas to improve evaporation properties of drive gas
FR2878940A1 (en) * 2004-12-06 2006-06-09 Guy Karsenti AIR CONDITIONING DEVICE OF THE ABSORPTION HEAT PUMP TYPE, ESPECIALLY FOR LOW VOLUME SPEAKERS, AND SPEAKER HAVING THE SAME
WO2009094723A1 (en) * 2008-02-01 2009-08-06 Frigrite Refrigeration Pty Ltd A physical adsorption based refrigeration system
US10066856B2 (en) 2015-11-17 2018-09-04 King Fahd University Of Petroleum And Minerals Integrated solar absorption heat pump system
CN112013564A (en) * 2019-09-04 2020-12-01 青岛华世洁环保科技有限公司 Comprehensive utilization system and method for adsorption recovery waste heat
US20210262738A1 (en) * 2013-07-11 2021-08-26 Eos Energy Storage, Llc Mechanical-chemical energy storage

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106595120B (en) * 2016-12-21 2019-10-29 上海理工大学 Greenhouse heating plant

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0061888A2 (en) * 1981-03-27 1982-10-06 Exxon Research And Engineering Company Staged adsorption/resorption heat pump
EP0061888A3 (en) * 1981-03-27 1983-05-04 Exxon Research And Engineering Company Staged adsorption/resorption heat pump
EP0105603A2 (en) * 1982-09-03 1984-04-18 Exxon Research And Engineering Company A tandem heat pump
EP0105603A3 (en) * 1982-09-03 1985-08-07 Exxon Research And Engineering Company A tandem heat pump
NL1013802C2 (en) * 1999-12-09 2001-06-12 Legerlede Holding B V Method for cooling gas-form, liquid or solid medium using solar energy employs absorption cooling system and properties of absorption fluid, drive gas as cooling gas and auxiliary gas to improve evaporation properties of drive gas
WO2006061483A1 (en) * 2004-12-06 2006-06-15 Guy Karsenti Absorption heat-pump air-conditioning device, particularly for low-volume enclosures and enclosure comprising said device
FR2878940A1 (en) * 2004-12-06 2006-06-09 Guy Karsenti AIR CONDITIONING DEVICE OF THE ABSORPTION HEAT PUMP TYPE, ESPECIALLY FOR LOW VOLUME SPEAKERS, AND SPEAKER HAVING THE SAME
WO2009094723A1 (en) * 2008-02-01 2009-08-06 Frigrite Refrigeration Pty Ltd A physical adsorption based refrigeration system
US20210262738A1 (en) * 2013-07-11 2021-08-26 Eos Energy Storage, Llc Mechanical-chemical energy storage
US11624560B2 (en) * 2013-07-11 2023-04-11 EOS Energy Technology Holdings, LLC Mechanical-chemical energy storage
US10066856B2 (en) 2015-11-17 2018-09-04 King Fahd University Of Petroleum And Minerals Integrated solar absorption heat pump system
US10845101B2 (en) 2015-11-17 2020-11-24 King Fahd University Of Petroleum And Minerals Integrated solar absorption heat pump system with evacuated tube solar collector
US10845102B2 (en) 2015-11-17 2020-11-24 King Fahd University Of Petroleum And Minerals Heat pump system with chilled water tank and photovoltaic thermal collector
CN112013564A (en) * 2019-09-04 2020-12-01 青岛华世洁环保科技有限公司 Comprehensive utilization system and method for adsorption recovery waste heat

Also Published As

Publication number Publication date
GB2076523B (en) 1984-12-05

Similar Documents

Publication Publication Date Title
US4183227A (en) Heat pump
JPS611933A (en) Adsorber for electric heat accumulator and operation method thereof
US3270512A (en) Intermittent type silica gel adsorption refrigerator
JP2000283588A (en) Absorption heat pump and control thereof
GB2076523A (en) Absorption heat pump
US5018368A (en) Multi-staged desiccant refrigeration device
US5934101A (en) Compression absorption heat pump
US4448030A (en) Combined staged air conditioner and heat store
JPS61122464A (en) Adsorption re-adsorption heat pump
JPH05172437A (en) Method and device for cooling fluid, particularly air by two separated absorption cooling system
JPH074775A (en) Cooling device using solar heat
JP2014532160A (en) Dehumidifier and method of using the same
GB2088548A (en) Thermal storage heating system
JP4779260B2 (en) Heat supply device and water heater
JP2678211B2 (en) Heat storage type cold / heat generator
US5911746A (en) Gax absorption cycle with secondary refrigerant
JP4186354B2 (en) Thermal management device
JPS6475862A (en) Heat accumulation type air conditioner
US2017471A (en) Absorption refrigerating machine with heat recovery
Gutkowski et al. Solar absorption system for air conditioning
JP3785743B2 (en) Absorption refrigeration system
KR20170125184A (en) Hybrid cooling and heating system using solar heat with thermochemical heat storage tank and a method of cooling and heating using the same
JPS59167663A (en) Recovery device for waste heat from heat pump
JPH0355741B2 (en)
JPH11223415A (en) Refrigerating device

Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee