CN111238080A - Ammonia water absorption-compression type composite heat pump driven by solar energy and fuel gas double heat sources - Google Patents

Ammonia water absorption-compression type composite heat pump driven by solar energy and fuel gas double heat sources Download PDF

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Publication number
CN111238080A
CN111238080A CN202010023317.2A CN202010023317A CN111238080A CN 111238080 A CN111238080 A CN 111238080A CN 202010023317 A CN202010023317 A CN 202010023317A CN 111238080 A CN111238080 A CN 111238080A
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China
Prior art keywords
heat
ammonia
generator
temperature section
solar
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Pending
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CN202010023317.2A
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Chinese (zh)
Inventor
贾腾
代彦军
储鹏
窦蓬勃
赵耀
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Shanghai Jiaotong University
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Shanghai Jiaotong University
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Priority to CN202010023317.2A priority Critical patent/CN111238080A/en
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    • 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
    • F25B25/00Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00
    • F25B25/02Compression-sorption machines, plants, or systems
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24DDOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00Details
    • F24D19/10Arrangement or mounting of control or safety devices
    • F24D19/1006Arrangement or mounting of control or safety devices for water heating systems
    • F24D19/1009Arrangement or mounting of control or safety devices for water heating systems for central heating
    • F24D19/1045Arrangement or mounting of control or safety devices for water heating systems for central heating the system uses a heat pump and solar energy
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24DDOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D3/00Hot-water central heating systems
    • F24D3/18Hot-water central heating systems using heat pumps
    • 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
    • F25B30/06Heat pumps characterised by the source of low potential heat
    • 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
    • F25B41/00Fluid-circulation arrangements
    • F25B41/20Disposition of valves, e.g. of on-off valves or flow control valves
    • 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
    • F25B49/00Arrangement or mounting of control or safety devices
    • F25B49/02Arrangement or mounting of control or safety devices for compression type machines, plants or 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
    • F25B49/00Arrangement or mounting of control or safety devices
    • F25B49/04Arrangement or mounting of control or safety devices for sorption type machines, plants or systems
    • 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
    • Y02B10/00Integration of renewable energy sources in buildings
    • Y02B10/20Solar thermal
    • 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
    • Y02B10/00Integration of renewable energy sources in buildings
    • Y02B10/70Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies

Abstract

The invention discloses an ammonia water absorption-compression type composite heat pump driven by solar energy and fuel gas double heat sources. Belongs to the field of solar heat utilization and heat pump air conditioning. The invention comprises a high-temperature section of a generator, a medium-temperature section of the generator, a low-temperature section of the generator, a rectifier, a condenser, a subcooler, a throttle valve A, an evaporator, a three-way valve A, a compressor, a solution cooling absorber, a water cooling absorber, a throttle valve B, a solution circulating pump, a gas furnace, a three-way valve B, a solar heat collector, a heat collector working medium circulating pump, a heat collector working medium circulating pipeline, a heating water return port, a heating water outlet, a compressor bypass pipe and a heat collector working medium bypass pipe. The invention is applied to heating in winter in the north, improves a winter heating structure mainly based on coal burning, and adopts clean energy to improve the environment.

Description

Ammonia water absorption-compression type composite heat pump driven by solar energy and fuel gas double heat sources
Technical Field
The invention relates to the field of solar heat utilization and heat pump air conditioning, in particular to an ammonia water absorption-compression type composite heat pump driven by solar energy and fuel gas double heat sources.
Background
With the aggravation of energy crisis and the improvement of environmental protection requirements, energy-saving and emission-reducing technologies become a worldwide research topic. China is energy consumption and CO2The emission countries face increasingly severe pressure on energy conservation and emission reduction. Meanwhile, haze issues, which are closely related to the energy consumption model mainly of coal, are receiving increasing attention.
In cold areas in northern China, the heating energy consumption of buildings accounts for more than 50% of the total energy consumption of the buildings, and the serious haze problem is mainly caused by a non-clean heating mode mainly based on direct combustion of coal. Meanwhile, the increasing demand of heat supply in hot summer and cold winter areas such as the middle and lower reaches of Yangtze river and the like, and the problem to be solved urgently is solved by utilizing solar energy to perform efficient and stable heating in winter along with the successive emergence of series policies such as 'coal limitation' and 'coal-to-electricity' for heating in winter in the north of China.
At present, a large amount of electric energy is consumed for heating by a steam compression type heat pump, and ozone layer damage and greenhouse effect can be caused by refrigerants such as freon and the like used for heating of a household air conditioner. Compared with a vapor compression heat pump, the absorption heat pump adopts an environment-friendly working medium such as ammonia water (NH)3-H2O), etc., and can be driven by renewable energy, waste heat, etc., and fossil fuel consumption can be effectively reduced. However, the absorption heat pump has a lower heat supply efficiency, requires more installation area under the same heat load condition, and is difficult to efficiently operate at an ambient temperature lower than-20 ℃, compared to the vapor compression heat pump.
By taking reference to the traditional steam compression heat pump, the ammonia compressor is introduced into the outlet of the evaporator of the traditional ammonia water absorption heat pump based on GAX, and the air suction process of the compressor is utilized to ensure that certain negative pressure is achieved in the evaporator and the evaporation pressure is reduced, so that the evaporation temperature is reduced, the adaptability of the heat pump unit to the cold environment is enhanced, and the region range suitable for adopting the heat pump for heating in winter in China is enlarged.
Therefore, those skilled in the art have endeavored to develop a new device for using solar energy to reduce energy consumption.
Disclosure of Invention
In view of the defects of the prior art, the invention aims to solve the technical problem of comprehensive utilization of various energy sources and solve the problem that the ammonia water absorption-compression type composite heat pump driven by double heat sources of solar energy and fuel gas is applied to heating in winter in the north.
In order to achieve the purpose, the invention provides an ammonia water absorption-compression type compound heat pump driven by double heat sources of solar energy and fuel gas, which comprises a high-temperature section of a generator, a medium-temperature section of the generator, a low-temperature section of the generator, a rectifier, a condenser, a subcooler, a throttle valve A, an evaporator, a three-way valve A, a compressor, a solution cooling absorber, a water cooling absorber, a throttle valve B, a solution circulating pump, a gas furnace, a three-way valve B, a solar heat collector, a heat collector working medium circulating pump, a heat collector working medium circulating pipeline, a heating water return port, a heating water outlet, a compressor bypass pipe and a heat collector working medium bypass pipe.
Further, it is characterized in that the heating water is preheated in the water cooling absorber, and absorbs a large amount of heat in the condenser to be heated.
Furthermore, the working medium of the heat collector absorbs heat in the solar heat collector, and the heat is released in the middle temperature section of the generator to heat the ammonia water solution.
Further, the gas furnace heats the ammonia water solution at the high-temperature section of the generator.
Further, the saturated ammonia water solution from the high-temperature section of the generator sequentially flows through the low-temperature section of the generator and the throttle valve B to enter the solution cooling absorber.
Further, ammonia gas generated in the high-temperature section of the generator, the medium-temperature section of the generator and the low-temperature section of the generator sequentially flows into the rectifier for purification.
Further, the ammonia gas purified from the rectifier enters the condenser to exchange heat with heating water.
Further, gas-liquid two-phase ammonia enters the evaporator, absorbs ambient air heat to form gas-phase ammonia, namely ammonia gas, and the gas-phase ammonia is discharged from an outlet of the evaporator.
Further, the solar collector is a small trough solar collector.
Further, the compressor is an oil-free scroll compressor.
Further, the solution at the outlet of the high-temperature section of the generator is saturated solution under the corresponding temperature and pressure conditions.
Further, the ammonia at the inlet of the evaporator is in a gas-liquid two-phase state, and the dryness of the ammonia depends on the opening degree of the throttle valve A and the evaporation temperature requirement.
Compared with the prior art, the ammonia water absorption-compression type composite heat pump driven by the solar energy and gas dual heat source has the advantages that:
(1) by adopting the ammonia-water working medium, the established cycle is more suitable for heat pump heating in cold environments in winter in cold areas in northern China, and a winter heating structure mainly based on coal is improved;
(2) the solar energy can be partially or completely utilized for driving, so that the consumption of fossil fuel can be reduced, and the problem of haze caused by heating in the north can be relieved;
(3) whether the compressor is connected to the heat pump loop or not can be adjusted through the three-way valve A, and the working requirements under different environmental temperatures can be met more efficiently;
(4) the three-way valve B is used for adjusting whether a heat collection loop of the trough type heat collector is connected with a heat pump loop or not, when the solar radiation condition is good, solar heat is used as much as possible to drive the heat pump, and when the solar radiation condition is insufficient, gas is used for combustion, so that the normal operation of the heat pump is ensured.
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.
Drawings
FIG. 1 is a flow chart of an ammonia absorption-compression type compound heat pump system driven by a solar energy and fuel gas dual heat source according to a first embodiment of the invention;
FIG. 2 is a system flow diagram of a second embodiment of the present invention;
FIG. 3 is a system flow diagram of a third embodiment of the present invention;
FIG. 4 is a system flow diagram of a fourth embodiment of the present invention;
the system comprises a generator 1, a generator high-temperature section, a generator 2, a generator medium-temperature section, a generator 3, a generator low-temperature section, a rectifier 4, a condenser 5, a subcooler 6, a throttle valve A7, an evaporator 8, a three-way valve A9, a compressor 10, a solution cooling absorber 11, a water cooling absorber 12, a throttle valve B13, a solution circulating pump 14, a gas furnace 15, a three-way valve B16, a small-sized trough solar heat collector 17, a heat collector working medium circulating pump 18, a heat collector bypass working medium circulating pipeline 19, a heating water return port 20, a heating water outlet 21, a compressor pipe 22 and a heat collector working medium pipe 23.
Detailed Description
The technical contents of the preferred embodiments of the present invention will be more clearly and easily understood by referring to the drawings attached to the specification. The present invention may be embodied in many different forms of embodiments and the scope of the invention is not limited to the embodiments set forth herein.
In the drawings, structurally identical elements are represented by like reference numerals, and structurally or functionally similar elements are represented by like reference numerals throughout the several views. The size and thickness of each component shown in the drawings are arbitrarily illustrated, and the present invention is not limited to the size and thickness of each component. The thickness of the components may be exaggerated where appropriate in the figures to improve clarity.
As shown in fig. 1, the ammonia water absorption-compression type compound heat pump driven by the solar energy and gas dual heat source of the first embodiment comprises a generator high temperature section 1, a generator medium temperature section 2, a generator low temperature section 3, a rectifier 4, a condenser 5, a subcooler 6, a throttle valve a7, an evaporator 8, a three-way valve a9, a compressor 10, a solution cooling absorber 11, a water cooling absorber 12, a throttle valve B13, a solution circulating pump 14, a gas furnace 15, a three-way valve B16, a solar heat collector 17, a heat collector bypass circulating pump 18, a heat collector working medium circulating pipeline 19, a heating water return port 20, a heating water outlet 21, a compressor bypass pipe 22 and a heat collector working medium pipe 23.
A solar heat supply loop, a heat collection working medium is arranged in a solar heat supply loop pipe 19 and is sent to a heat collection pipe of a solar heat collector 17 through a heat collection working medium circulating pump 18, the heat collection working medium in the pipe absorbs the heat of the solar heat collector 17, the heat collection working medium enters a generator middle temperature section 2 through a three-way valve B16 and exchanges heat with a heat pump working medium ammonia water solution at the position, the ammonia water solution is heated and heated, the heat collection working medium is cooled, and the heat collection working medium is sent to the solar heat collector 17 through the heat collection working medium circulating pump 18 so as to circulate continuously. The solar heat supply loop is also provided with a bypass pipe 23 which is controlled by a three-way valve B16 and cuts off or communicates the heat collection working medium entering the middle temperature section 2 of the generator according to the situation. The solar collector 17 is a small trough solar collector.
The heating water loop, the heating water flowing back from the indoor heating enters the loop through the heating water return port 20, enters the water cooling absorber 12, the ammonia water solution absorbs ammonia gas at the loop, the absorption heat is released, the heating water exchanges heat with the ammonia water solution through the heat exchange tube, and the heating water obtains the absorption heat to be heated; and the heating water enters a condenser 5, the ammonia gas is condensed at the position to release condensation heat, the heating water in the pipeline exchanges heat with the ammonia working medium, the heating water obtains a large amount of heat to continue heating, and then the heating water enters an indoor heating system for use. The heating water flow returns to the heating water return port 20 and then enters the loop, and the process is circulated.
In the heat pump working medium loop, the ammonia water solution in the high-temperature section 1 of the generator is heated by the gas furnace 14 to generate, the generated ammonia water solution enters the medium-temperature section 2 of the generator, the solar heat is received to continue the generation process, the generated ammonia water solution flows into the low-temperature section 3 of the generator, the regenerative sensible heat is received to continue the generation process, and the finally generated dilute ammonia water solution flows through the throttle valve B13 and enters the solution cooling absorber 11. All ammonia steam generated in three generation processes of the high-temperature section 1, the medium-temperature section 2 and the low-temperature section 3 of the generator enters a rectifier 4 for purification, the purified ammonia gas enters a condenser 5, and the purified ammonia gas exchanges heat with heating water of an indoor heating loop at the condenser to release a large amount of heat and is fully condensed to become liquid-phase ammonia; the heat is released by the subcooler 6, becomes gas-liquid two-phase low-temperature ammonia through the throttle valve A7, then flows into the evaporator 8, absorbs the heat of the ambient air at the evaporator 8 and evaporates into gas-phase ammonia; the ammonia gas from the evaporator 8 flows through the subcooler 6, receives the sensible heat of ammonia subcooling from the condenser 5, realizes superheating, and then enters the compressor 10 through the three-way valve A9 to be compressed, and enters the solution cooling absorber 11. The small amount of ammonia solution refluxed from the rectifier 4 enters the low-temperature section 3 of the generator. The ammonia solution entering the solution cooling absorber 11 absorbs a part of the high temperature ammonia vapor coming out of the compressor 10, and releases the heat of absorption for preheating the internal solution. And then passes through a water cooling absorber 12 to absorb the residual high-temperature ammonia vapor from the compressor 10, so as to generate absorption heat, and the absorption heat exchanges heat with the indoor heating water flowing through the absorption heat. The solution at the outlet of the water cooling absorber 12 flows through the solution circulating pump 14, the rectifier 4 and the solution cooling absorber 11 through pipelines, and then is mixed with a small amount of ammonia solution flowing back from the rectifier 4 and enters the low-temperature section 3 of the generator.
The ammonia at the outlet of the water cooled absorber 12 is a concentrated ammonia solution.
The solution at the inlet of the low-temperature section 3 of the generator exchanges heat with the hot ammonia solution, the solar heat collecting working medium and the gas furnace 15 respectively in the low-temperature section 3 of the generator, the medium-temperature section 2 of the generator and the high-temperature section 1 of the generator, the temperature rises, the solution becomes saturated, high-temperature and high-pressure ammonia steam is generated, the whole generating process is not isothermal, temperature slippage exists, and the solution at the outlet of the high-temperature section 1 of the generator is saturated solution under the corresponding temperature and pressure conditions.
The ammonia working medium at the inlet of the evaporator 8 is in a gas-liquid two-phase state, and the dryness depends on the opening of the throttle valve 7 and the evaporation temperature requirement. In the evaporator 8, the low-temperature pure ammonia absorbs the heat of the air in the low-temperature environment, the temperature rises, the ammonia is evaporated into low-temperature low-pressure ammonia steam, the whole phase change process is isothermal, and temperature slippage does not exist.
The high-temperature driving heat source is high-temperature solar heat (>170 ℃) generated by the small-sized groove type solar heat collector 17, and the low-temperature driving heat source is low-temperature environment heat (> 35 ℃), waste heat, low-temperature solar heat (10-35 ℃) and the like.
The solar heat collector 17 is a small-sized trough-type solar heat collector, and determines a proper heat collection area according to the principle of factors such as heat supply load, installation site and the like.
The compressor 10 is preferably a small oil-free scroll compressor, the minimum suction pressure is 0.07-0.08 MPa, and the pressure ratio is in the range of 4.0-8.0.
In the invention, for fixed and reasonable working high pressure, low pressure and water supply temperature, the solution circulation rate of the generator and the distribution proportion of each part of flow in the circulation can be determined.
According to the ammonia water absorption-compression type compound heat pump driven by the solar energy and gas double heat sources, the water supply temperature is 40-60 ℃, and the ammonia water absorption-compression type compound heat pump is suitable for being applied to temperature requirements of floor heating, fan coil heating and the like; the ambient temperature must not be too low (> -35 ℃). When the ambient temperature is too low, the evaporation process cannot be continued and the heat pump cannot work due to the limitation of the suction pressure and the pressure ratio of the compressor 10.
The embodiment is suitable for indoor heating in cold environment (-35 to-15 ℃) in winter and under sufficient solar irradiation conditions.
As shown in fig. 2, the ammonia absorption-compression type compound heat pump driven by the solar energy and gas dual heat source of the second embodiment, the gas furnace 15 and the compressor 10 are connected into the system, the solar heat collector 17 is not connected into the system, and the solar heat collector 17 can be disconnected into the system by closing the working medium circulating pump 18 of the heat collector and adjusting the three-way valve B16. On the basis of the heat pump flow chart shown in fig. 1, the three-way valve B16 is adjusted, and the heat pump is driven by the single external heat source gas furnace 15, and the same contents refer to the first embodiment. The embodiment is suitable for indoor heating when the environmental temperature is low (-35 to-15 ℃) and the solar radiation condition is insufficient in winter.
As shown in fig. 3, in the ammonia absorption-compression type composite heat pump driven by the solar energy and gas dual heat source of the third embodiment, the solar heat collector 17 and the gas furnace 15 are connected to the system, and the compressor bypass pipe 22 is connected through the three-way valve a9, so that the compressor 10 is not connected to the system. The same contents refer to the first embodiment. This embodiment is suitable for indoor heating when the ambient temperature is low in winter (> -15 ℃) and the solar radiation conditions are sufficient.
As shown in fig. 4, the ammonia absorption-compression type compound heat pump driven by the solar energy and gas dual heat source of the fourth embodiment, the gas furnace 15 is connected to the system, the solar heat collector 17 can be disconnected from the system by closing the heat collector working medium circulating pump 18 and adjusting the three-way valve B16, and the compressor 10 is disconnected from the system by connecting the compressor bypass pipe 22 through the three-way valve a 9. On the basis of fig. 3, the heat pump is driven by a single external heat source gas furnace 15. The same contents refer to the first embodiment. This embodiment is suitable for indoor heating when the ambient temperature is low in winter (> -15 ℃) and the solar irradiation conditions are insufficient.
It is difficult to independently use solar heat to drive the heat pump heating in the present invention for a long time due to weak solar radiation in winter, but all the non-illustrated embodiments of the heat pump heating in the present invention driven by single solar heat should be within the protection scope defined by the claims.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.

Claims (10)

1. The ammonia water absorption-compression type composite heat pump driven by solar energy and fuel gas double heat sources is characterized by comprising a generator high-temperature section, a generator medium-temperature section, a generator low-temperature section, a rectifier, a condenser, a subcooler, a throttle valve A, an evaporator, a three-way valve A, a compressor, a solution cooling absorber, a water cooling absorber, a throttle valve B, a solution circulating pump, a gas furnace, a three-way valve B, a solar heat collector, a heat collector working medium circulating pump, a heat collector working medium circulating pipeline, a heating water return port, a heating water outlet, a compressor bypass pipe and a heat collector working medium bypass pipe.
2. The ammonia absorption-compression type compound heat pump driven by the solar energy and the gas dual heat source as claimed in claim 1, wherein the heating water is preheated in the water cooling absorber, and absorbs a large amount of heat in the condenser to raise the temperature.
3. The ammonia water absorption-compression type compound heat pump driven by the solar energy and the fuel gas dual heat source as claimed in claim 1, wherein a heat collector working medium absorbs heat in the solar heat collector, and releases heat to heat the ammonia water solution in the middle temperature section of the generator.
4. The ammonia absorption-compression type compound heat pump driven by the solar energy and the gas dual heat source as claimed in claim 1, wherein the gas furnace heats the ammonia solution at the high temperature section of the generator.
5. The ammonia water absorption-compression type compound heat pump driven by the solar energy and the gas dual heat source as claimed in claim 1, wherein the saturated ammonia water solution from the high-temperature section of the generator flows through the low-temperature section of the generator in sequence for heat recovery, then enters the solution cooling absorber after throttling and pressure reduction through the throttle valve B.
6. The ammonia water absorption-compression type compound heat pump driven by the solar energy and the fuel gas dual heat source as claimed in claim 1, wherein ammonia gas generated in the high-temperature section of the generator, the medium-temperature section of the generator and the low-temperature section of the generator sequentially flows into the rectifier for purification.
7. The ammonia water absorption-compression type compound heat pump driven by the solar energy and the gas dual heat source as claimed in claim 1, wherein the ammonia gas purified from the rectifier enters the condenser to exchange heat with heating water.
8. The ammonia water absorption-compression type compound heat pump driven by the solar energy and the fuel gas dual heat source as claimed in claim 1, wherein gas-liquid two-phase ammonia enters the evaporator, absorbs ambient air heat to form gas-phase ammonia, and the gas-phase ammonia is discharged from an outlet of the evaporator.
9. The ammonia absorption-compression type compound heat pump driven by the solar energy and the gas dual heat source as claimed in claim 1, wherein the solar heat collector is a small-sized trough type solar heat collector.
10. The ammonia absorption-compression hybrid heat pump driven by a solar and gas dual heat source as set forth in claim 1, wherein said compressor is an oil-free scroll compressor.
CN202010023317.2A 2020-01-09 2020-01-09 Ammonia water absorption-compression type composite heat pump driven by solar energy and fuel gas double heat sources Pending CN111238080A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111609578A (en) * 2020-06-08 2020-09-01 上海交通大学 Small-sized multi-mode solar-assisted household air conditioning system
CN113983486A (en) * 2021-12-07 2022-01-28 邯郸学院 660MW secondary reheating unit flue gas dehumidification system

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5294554A (en) * 1976-02-03 1977-08-09 Mitsubishi Electric Corp Refrigerator
US4388812A (en) * 1979-03-08 1983-06-21 Clark Silas W Variable valve for refrigeration system
CN1460825A (en) * 2003-06-12 2003-12-10 上海交通大学 Combined solar refrigerating equipment
CN101968288A (en) * 2010-10-22 2011-02-09 北京化工大学 Absorption-compression composite refrigeration cycle system
CN203224067U (en) * 2013-04-22 2013-10-02 济南国海能源科技有限公司 Solar combined refrigerating system
CN104764244A (en) * 2015-04-24 2015-07-08 珠海格力电器股份有限公司 Absorption heat pump unit, heat exchanger unit and heat supply system
CN107477651A (en) * 2017-08-18 2017-12-15 新地能源工程技术有限公司 A kind of fuel heating plant and method suitable for cold district

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5294554A (en) * 1976-02-03 1977-08-09 Mitsubishi Electric Corp Refrigerator
US4388812A (en) * 1979-03-08 1983-06-21 Clark Silas W Variable valve for refrigeration system
CN1460825A (en) * 2003-06-12 2003-12-10 上海交通大学 Combined solar refrigerating equipment
CN101968288A (en) * 2010-10-22 2011-02-09 北京化工大学 Absorption-compression composite refrigeration cycle system
CN203224067U (en) * 2013-04-22 2013-10-02 济南国海能源科技有限公司 Solar combined refrigerating system
CN104764244A (en) * 2015-04-24 2015-07-08 珠海格力电器股份有限公司 Absorption heat pump unit, heat exchanger unit and heat supply system
CN107477651A (en) * 2017-08-18 2017-12-15 新地能源工程技术有限公司 A kind of fuel heating plant and method suitable for cold district

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
戴恩乾等: ""Experimental investigation on a GAX based absorption heat pump driven by hybrid liquefied petroleum gas and solar energy"", 《SOLAR ENERGY》 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111609578A (en) * 2020-06-08 2020-09-01 上海交通大学 Small-sized multi-mode solar-assisted household air conditioning system
CN113983486A (en) * 2021-12-07 2022-01-28 邯郸学院 660MW secondary reheating unit flue gas dehumidification system

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