CN101055136A - Low grade energy driven and mechanical power driven composite heat pump, refrigeration system - Google Patents
Low grade energy driven and mechanical power driven composite heat pump, refrigeration system Download PDFInfo
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- CN101055136A CN101055136A CNA2007100689601A CN200710068960A CN101055136A CN 101055136 A CN101055136 A CN 101055136A CN A2007100689601 A CNA2007100689601 A CN A2007100689601A CN 200710068960 A CN200710068960 A CN 200710068960A CN 101055136 A CN101055136 A CN 101055136A
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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
Abstract
The invention discloses a low-grade energy driving and mechanical power driving composite heat pump and refrigeration system. The system is comprised by following components connected in a certain rule: low-grade energy collector, generator, condenser, refrigerant storage, first throttle valve, condensing evaporator, absorber, reservoir, solution pump, solution heat exchanger, compressor, four-way valve, first one-way valve, first control valve, outdoor heat exchanger, second throttle valve, second one-way valve, third one-way valve, fourth one-way valve, third throttle valve, fifth one-way valve, condenser or evaporator, sixth one-way valve, seventh one-way valve, second control valve, eighth one-way valve. The invention has following advantages: (1) it has all advantages of low-grade energy heat pump and refrigeration system; (2) the heat pump and refrigeration system are compounded, and system COP has been greatly improved; the system can work in high efficiency as the low-grade energy is not abundant; and the system can still work stably without any the low-grade energy.
Description
Technical field
The present invention relates to a kind of low-grade energy driving and mechanical power driven composite heat pump, refrigeration system.
Background technology
Fossil energies such as the oil that China contains, natural gas and coal are by very limited per capita, and arid relatively, desertification is serious, and the environment ability to bear is more weak, and the development and use of fossil energy bring very adverse effect to environment easily.So, develop, utilize low-grade energy can remedy the deficiency of fossil energy effectively, improve with the energy structure, will have very high social benefit and economic worth.
Air-conditioning heat pump, refrigeration system are the big power consumers, and the electric energy of its consumption accounts for 15% of the whole consumed powers of society.But in industry and other field, a large amount of low-grade energies do not obtain fine utilization.In addition, solar energy is as the huge clean reproducible energy of a kind of energy, utilizes the mode of solar thermal utilization based on the absorption refrigeration principle, solar energy be used for air-conditioning heat pump, refrigeration system has the feasibility on the principle and has a series of advantage.
At conventional low-grade energy particularly solar thermal energy drive heat pump, kind of refrigeration cycle exist efficient low, to the heat source temperature requirement high and be difficult to adapt to that solar radiation self is discontinuous, instability etc. perplexs solar heat pump always, refrigeration is promoted problem, according to heat (cold) amount classification principle.The present invention proposes one can improve novel heat pump, the refrigeration system that low grade heat energy drives heat pump, refrigeration system total energy efficient.New system drives refrigeration unit by heat energy and mechanical power drives heat pump, refrigeration unit is composited.Heat energy drives refrigeration unit low-grade cold is provided, and mechanical power drives heat pump (refrigeration) unit high-grade heat (cold) amount is provided, and reaches by the energy coupling to promote the purpose that low grade heat energy drives heat pump, refrigeration system total energy efficient.In addition, new system can also overcome discontinuous, the unsettled shortcoming of solar radiation, for the efficient utilization of solar energy and other low-grade energies lays the foundation.
Summary of the invention
The purpose of this invention is to provide a kind of low-grade energy driving and mechanical power driven composite heat pump, refrigeration system.
Low-grade energy drives and mechanical power driven composite heat pump, heat pump, low-grade energy collector in the refrigeration system successively with the generator heat exchange pipeline, condenser lithium bromide pipeline, the cold-producing medium memory, the first throttle valve, condenser/evaporator lithium bromide pipeline, the import of absorber lithium bromide, the reservoir import, solution pump, solution heat exchanger bromize lithium dilute solution passage, the import of generator lithium bromide is connected, compressor high-voltage end successively with the cross valve high-pressure side, first check valve, solution heat exchanger freon passage, first control valve, outdoor heat exchanger, second check valve, condenser/evaporator freon passage, the 4th check valve, the 3rd choke valve, condenser (evaporimeter) freon passage, the 6th check valve, the cross valve low-pressure end, the compressor low-pressure end is connected, the 6th check valve outlet successively with the 7th check valve, the outlet of first check valve is connected, condenser (evaporimeter) successively with second control valve, the first throttle valve is connected, condenser/evaporator freon passage successively with the 3rd check valve, second choke valve, outdoor heat exchanger, absorber freon passage, the 8th check valve, cross valve is connected, condenser (evaporimeter) freon passage successively with the 5th check valve, the 4th check valve inlet is connected.
Described a kind of low-grade energy driving and mechanical power driven composite heat pump, refrigeration system is characterized in that described low-grade energy collector is the gatherer of solar thermal collector, industrial waste heat heat exchanger or waste water residual heat heat exchanger low-grade energy.
Described a kind of low-grade energy driving and mechanical power driven composite heat pump, refrigeration system, it is characterized in that described outdoor heat exchanger be air cooling heat exchanger, source heat exchanger or water source heat exchanger.
The beneficial effect that the present invention has:
1) it possesses the advantage of all low-grade energy heat pumps, refrigeration system, and is energy-conservation, economy, cleaning, environmental protection.
2) owing to partly adopt compression-type refrigerating system at low-temperature vaporized refrigeration, make the evaporating temperature of absorbent refrigeration system can not need very low, thereby improved the efficient of system to a great extent, it is required that to add the hot water temperature lower, thereby the requirement for heat collector is lower, can save the initial cost of heat collector greatly.
3) supply with sufficient the time at low-grade energy, significantly reduce, make that the COP of system is significantly promoted, saves energy owing to compare the condensation temperature of combined type system with the compression refrigerating system of routine.
4) system still can move on more efficient ground when the low-grade energy supply is not abundant, the cold-producing medium that low-grade energy can be mainly used in compression heat pump, refrigeration system carried out cold, the cold-producing medium of the HTHP of compression heat pump, refrigeration system can make the temperature of the weak solution of absorbent refrigeration system get a promotion effectively simultaneously, thereby energy is reclaimed.The existence of cold part also can energy savings compared with conventional compression heat pump, refrigeration system excessively owing to having had in the system of this moment.
5) under the situation that low-grade energy does not have fully, this system is equivalent to common air-cooled (or water source or source, ground) heat pump (refrigeration) unit, still can stably move.
Description of drawings
Accompanying drawing is that low-grade energy drives and the mechanical power driven composite refrigeration system structural representation, among the figure: low-grade energy collector 1, generator 2, condenser 3, cold-producing medium memory 4, first throttle valve 5, condenser/evaporator 6, absorber 7, reservoir 8, solution pump 9, solution heat exchanger 10, compressor 11, cross valve 12, first check valve 13, first control valve 14, outdoor heat exchanger 15, second choke valve 16, second check valve 17, the 3rd check valve 18, the 4th check valve 19, the 3rd choke valve 20, the 5th check valve 21, condenser or evaporimeter 22, the 6th check valve 23, the 7th check valve 24, second control valve 25, the 8th check valve 26.
The specific embodiment
As shown in drawings, low-grade energy drives and mechanical power driven composite heat pump, low-grade energy collector 1 in the refrigeration system successively with generator 2 heat exchange pipelines, condenser 3 lithium bromide pipelines, cold-producing medium memory 4, first throttle valve 5, condenser/evaporator 6 lithium bromide pipelines, absorber 7 lithium bromide imports, reservoir 8 imports, solution pump 9, solution heat exchanger 10 bromize lithium dilute solution passages, generator 2 lithium bromide imports are connected, compressor 11 high-pressure sides successively with cross valve 12 high-pressure sides, first check valve 13, solution heat exchanger 10 freon passages, first control valve 14, outdoor heat exchanger 15, second check valve 17, condenser/evaporator 6 freon passages, the 4th check valve 19, the 3rd choke valve 20, condenser (evaporimeter) 22 freon passages, the 6th check valve 23, cross valve 12 low-pressure ends, compressor 11 low-pressure ends are connected, the outlet of the 6th check valve 23 successively with the 7th check valve 24,13 outlets of first check valve are connected, condenser (evaporimeter) 22 successively with second control valve 25, first throttle valve 14 is connected, condenser/evaporator 6 freon passages successively with the 3rd check valve 18, second choke valve 16, outdoor heat exchanger 15, absorber 7 freon passages, the 8th check valve 26, cross valve is connected, condenser (evaporimeter) 22 freon passages successively with the 5th check valve 21, the 4th check valve 19 inlets are connected.
Described a kind of low-grade energy driving and mechanical power driven composite heat pump, refrigeration system is characterized in that described low-grade energy collector 1 is the gatherer of solar thermal collector, industrial waste heat heat exchanger or waste water residual heat heat exchanger low-grade energy.
Described a kind of low-grade energy driving and mechanical power driven composite heat pump, refrigeration system, it is characterized in that described outdoor heat exchanger 15 for air cooling heat exchanger, source heat exchanger or water source heat exchanger.
The present invention is composited by compression heat pump, kind of refrigeration cycle and absorption refrigeration circulation, and the absorption refrigeration circulation adopts water and lithium bromide as working medium, and the refrigeration working medium of compressing hot pump, kind of refrigeration cycle is R22, R410A or their alternative refrigerant.
In summer during refrigerating operaton, first control valve 14 is opened, second control valve 25 is closed.Drive in the refrigeration unit (absorption refrigeration circulation) in heat, weak solution in the reservoir 8 promotes through solution pump 9 and enters solution heat exchanger 10 and drive heat pump (refrigeration) unit (compression refrigeration circulation) high-temperature gas and go into generator 2 and further heated the generation refrigerant vapour by low-grade energy from the part heat of generator 2 concentrated solutions is laggard absorbing from mechanical power, concentrated solution in the generator 2 enters absorber 7 after by precooling in solution heat exchanger 10, in absorber 7, cooled off and the absorption refrigeration agent becomes weak solution and enters reservoir 8 by the medium that further is cooled, enter next circulation, the refrigerant vapour that in generator 2, the produces water condensation that in condenser 3, is cooled, cross and enter refrigerant reservoir 4 after cold, behind first throttle valve 5, enter condenser/evaporator 6 in cooling, cross in the process of the cold cold-producing medium R410A that drives heat pump (refrigeration) unit (compression refrigeration circulation) from mechanical power and to flash to refrigerant vapour owing to absorbing heat and enter absorber 7 and be absorbed the agent absorption, finish a circulation; Mechanical power drives in heat pump (refrigeration) unit (compression refrigeration circulation), send into solution heat exchanger 10 from the R410A low-pressure steam of condenser (evaporimeter) 22 after by compressor 11 compressions, after in solution heat exchanger 10, carrying out preliminary heat release, inlet chamber external heat exchanger 15 further is cooled with condenser/evaporator 6, condensation, cold excessively, evaporate at the heat of condenser (evaporimeter) 22 owing to the absorption refrigerating medium by the 3rd choke valve 20 backs then, steam is sucked by compressor 11 and enters next circulation.Thereby finish the kind of refrigeration cycle of whole system.At this moment, refrigerating medium (chilled water) can provide air conditioning terminal to use.
During operation of heat pump, first control valve 14 is closed, second control valve 25 is opened in the winter time.Drive in the refrigeration unit (absorption refrigeration circulation) in heat, weak solution in the reservoir 8 promotes through solution pump 9 and enters solution heat exchanger 10 and drive heat pump (refrigeration) unit (compression refrigeration circulation) high-temperature gas and go into generator 2 and further heated the generation refrigerant vapour by low-grade energy from the part heat of generator 2 concentrated solutions is laggard absorbing from mechanical power, concentrated solution in the generator 2 enters absorber 7 after by precooling in solution heat exchanger 10, the also absorption refrigeration agent that further is cooled in absorber 7 becomes weak solution and enters reservoir 8, enter next circulation, the refrigerant vapour that in generator 2, produces water (backwater of the terminal heat source side of the user) condensation that in condenser 3, is cooled, cross and enter refrigerant reservoir 4 after cold, behind first throttle valve 5, enter condenser/evaporator 6 in cooling, cross in the process of the cold cold-producing medium R410A that drives heat pump (refrigeration) unit (compression refrigeration circulation) from mechanical power and to flash to refrigerant vapour owing to absorbing heat and enter absorber 7 and be absorbed the agent absorption, finish a circulation; Drive in heat pump (refrigeration) unit (compression refrigeration circulation) in mechanical power, send into solution heat exchanger 10 from the R410A low-pressure steam of outdoor heat exchanger 15 after by compressor 11 compressions, after in solution heat exchanger 10, carrying out preliminary heat release, entering condenser (evaporimeter) 22 heat releases is cooled, after the condensation at condenser/evaporator 6 further by cold excessively, then by second choke valve 16 back in outdoor heat exchanger 15 because the heat of absorbing environmental flashes to refrigerant vapour, steam is sucked by compressor 11 continue to absorb the heat of weak solution that heat from solution heat exchanger 10 drives refrigeration unit (absorption refrigeration circulation) in absorber 7 after and enters next the circulation.Thereby finish the heat pump cycle of whole system.At this moment, refrigerating medium (hot water) can provide air conditioning terminal to use.
Native system is compared with the technology in past has following two outstanding features:
1) heat pump (refrigeration) air-conditioning system is when refrigeration, and heat drives refrigeration unit (absorption refrigeration cycle) utilization The low-grade cold that low-grade energy is produced by 100% change into the high-grade cold, improved hot driving refrigeration Unit (absorption refrigeration cycle) is to the utilization rate of low-grade energy.
2) heat pump (refrigeration) air-conditioning system changes past solar heat pump (refrigeration) unit in system when heating Only absorb the heat of solar energy when hot, and abandon the present situation of draw heat from environment, not only improved unit Operational efficiency, even and when not having the sun unit also can move continuously.
Claims (3)
1. a low-grade energy drives and mechanical power driven composite heat pump, refrigeration system, it is characterized in that low-grade energy collector (1) successively with generator (2) heat exchange pipeline, condenser (3) lithium bromide pipeline, cold-producing medium memory (4), first throttle valve (5), condenser/evaporator (6) lithium bromide pipeline, absorber (7) lithium bromide import, reservoir (8) import, solution pump (9), solution heat exchanger (10) bromize lithium dilute solution passage, generator (2) lithium bromide import is connected, compressor (11) high-pressure side successively with cross valve (12) high-pressure side, first check valve (13), solution heat exchanger (10) freon passage, first control valve (14), outdoor heat exchanger (15), second check valve (17), condenser/evaporator (6) freon passage, the 4th check valve (19), the 3rd choke valve (20), condenser or evaporimeter (22) freon passage, the 6th check valve (23), cross valve (12) low-pressure end, compressor (11) low-pressure end is connected, the 6th check valve (23) outlet successively with the 7th check valve (24), first check valve (13) outlet is connected, condenser or evaporimeter (22) successively with second control valve (25), first throttle valve (14) is connected, condenser/evaporator (6) freon passage successively with the 3rd check valve (18), second choke valve (16), outdoor heat exchanger (15), absorber (7) freon passage, the 8th check valve (26), cross valve is connected, condenser or evaporimeter (22) freon passage successively with the 5th check valve (21), the 4th check valve (19) inlet is connected.
2. a kind of low-grade energy driving according to claim 1 and mechanical power driven composite heat pump, refrigeration system is characterized in that described low-grade energy collector (1) is the gatherer of solar thermal collector, industrial waste heat heat exchanger or waste water residual heat heat exchanger low-grade energy.
3. a kind of low-grade energy driving according to claim 1 and mechanical power driven composite heat pump, refrigeration system, it is characterized in that described outdoor heat exchanger (15) for air cooling heat exchanger, source heat exchanger or water source heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100689601A CN100498128C (en) | 2007-06-01 | 2007-06-01 | Low grade energy driven and mechanical power driven composite heat pump, refrigeration system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100689601A CN100498128C (en) | 2007-06-01 | 2007-06-01 | Low grade energy driven and mechanical power driven composite heat pump, refrigeration system |
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| Publication Number | Publication Date |
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| CN101055136A true CN101055136A (en) | 2007-10-17 |
| CN100498128C CN100498128C (en) | 2009-06-10 |
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| CNB2007100689601A Expired - Fee Related CN100498128C (en) | 2007-06-01 | 2007-06-01 | Low grade energy driven and mechanical power driven composite heat pump, refrigeration system |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101893293A (en) * | 2010-06-22 | 2010-11-24 | 方国明 | Centralized multi-connected cold (heat) source central air conditioning system |
| CN101949617A (en) * | 2010-09-21 | 2011-01-19 | 东南大学 | High-efficiency air source heat pump device and method for preparing water and air simultaneously |
| CN101718480B (en) * | 2008-10-10 | 2011-11-30 | 姜衍礼 | Heat pump unit for recycling afterheat of wastewater |
| CN103528258A (en) * | 2013-10-30 | 2014-01-22 | 宁波工程学院 | Mixed working medium variable concentration volume adjusting absorption heat pump system |
| CN106595117A (en) * | 2016-12-27 | 2017-04-26 | 广东技术师范学院 | Heat pump system |
| CN108592444A (en) * | 2018-02-06 | 2018-09-28 | 华北电力大学 | A kind of electric heat pump and the compound heat-exchange unit of absorption heat pump |
| CN108844253A (en) * | 2018-09-06 | 2018-11-20 | 华北电力大学 | A kind of superhigh temperature non-azeotropic working medium heat pump unit |
| CN110567039A (en) * | 2019-09-06 | 2019-12-13 | 河北昊天热力发展有限公司 | Gas absorption type air source heat pump circulating heat supply system |
| CN111852407A (en) * | 2020-07-17 | 2020-10-30 | 大连理工大学 | Heat shock method hydrate exploitation device based on solar absorption heat pump |
| CN113915795A (en) * | 2021-09-27 | 2022-01-11 | 河南科技大学 | Solar solution latent heat energy storage double-source heat pump system |
| CN115727569A (en) * | 2022-11-25 | 2023-03-03 | 北方工业大学 | Solar total reflection light gathering type ground source heat pump performance enhancing device |
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2007
- 2007-06-01 CN CNB2007100689601A patent/CN100498128C/en not_active Expired - Fee Related
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101718480B (en) * | 2008-10-10 | 2011-11-30 | 姜衍礼 | Heat pump unit for recycling afterheat of wastewater |
| CN101893293B (en) * | 2010-06-22 | 2013-11-06 | 方国明 | Centralized multi-connected cold (heat) source central air conditioning system |
| CN101893293A (en) * | 2010-06-22 | 2010-11-24 | 方国明 | Centralized multi-connected cold (heat) source central air conditioning system |
| CN101949617A (en) * | 2010-09-21 | 2011-01-19 | 东南大学 | High-efficiency air source heat pump device and method for preparing water and air simultaneously |
| CN101949617B (en) * | 2010-09-21 | 2012-11-28 | 东南大学 | High-efficiency air source heat pump device and method for preparing water and air simultaneously |
| CN103528258A (en) * | 2013-10-30 | 2014-01-22 | 宁波工程学院 | Mixed working medium variable concentration volume adjusting absorption heat pump system |
| CN106595117A (en) * | 2016-12-27 | 2017-04-26 | 广东技术师范学院 | Heat pump system |
| CN108592444B (en) * | 2018-02-06 | 2023-10-31 | 华北电力大学 | Heat exchange unit combining electric heat pump and absorption heat pump |
| CN108592444A (en) * | 2018-02-06 | 2018-09-28 | 华北电力大学 | A kind of electric heat pump and the compound heat-exchange unit of absorption heat pump |
| CN108844253A (en) * | 2018-09-06 | 2018-11-20 | 华北电力大学 | A kind of superhigh temperature non-azeotropic working medium heat pump unit |
| CN108844253B (en) * | 2018-09-06 | 2023-11-24 | 华北电力大学 | Super-high temperature non-azeotropic working medium heat pump unit |
| CN110567039A (en) * | 2019-09-06 | 2019-12-13 | 河北昊天热力发展有限公司 | Gas absorption type air source heat pump circulating heat supply system |
| CN111852407A (en) * | 2020-07-17 | 2020-10-30 | 大连理工大学 | Heat shock method hydrate exploitation device based on solar absorption heat pump |
| CN111852407B (en) * | 2020-07-17 | 2021-07-09 | 大连理工大学 | Heat shock method hydrate exploitation device based on solar absorption heat pump |
| CN113915795A (en) * | 2021-09-27 | 2022-01-11 | 河南科技大学 | Solar solution latent heat energy storage double-source heat pump system |
| CN115727569A (en) * | 2022-11-25 | 2023-03-03 | 北方工业大学 | Solar total reflection light gathering type ground source heat pump performance enhancing device |
| CN115727569B (en) * | 2022-11-25 | 2023-08-15 | 北方工业大学 | Solar total reflection condensing absorption type soil source heat pump performance enhancing device |
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| CN100498128C (en) | 2009-06-10 |
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