CN101957063B - All-weather solar and sewage energy mixed auxiliary heat pump water heater system - Google Patents

All-weather solar and sewage energy mixed auxiliary heat pump water heater system Download PDF

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Publication number
CN101957063B
CN101957063B CN201010508928A CN201010508928A CN101957063B CN 101957063 B CN101957063 B CN 101957063B CN 201010508928 A CN201010508928 A CN 201010508928A CN 201010508928 A CN201010508928 A CN 201010508928A CN 101957063 B CN101957063 B CN 101957063B
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China
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magnetic valve
sewage
energy
heat pump
valve
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Expired - Fee Related
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CN101957063A (en
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韩晓红
闵旭伟
仇宇
王勤
陈光明
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Zhejiang University ZJU
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Zhejiang University ZJU
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    • 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
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/40Solar thermal energy, e.g. solar towers
    • Y02E10/44Heat exchange systems

Abstract

The invention discloses an all-weather solar energy and sewage energy mixed auxiliary heat pump water heater system. The system can furthest utilize solar energy and sewage energy, reduce the utilization of high-grade energy sources, and effectively solve the problem of frosting of a heat pump in winter and has the characteristics of great energy-saving effect, all-weather hot water supply, all-weather heat supply and refrigeration and the like. Not only can water for flushing the toilet and irrigating domestic green plants be saved by collecting domestic miscellaneous sewage, but also abundant cold energy and heat energy contained in the domestic miscellaneous sewage can be effectively utilized, the refrigeration and heating efficiency of the heat pump is increased, and the frosting of the heat pump in winter can be effectively solved. The system can complete the functions of hot water supply, heating and refrigeration of the traditional solar water heater and the heat pump, and saves more energy and can be better adapted to weather change as compared with the traditional solar water heater and the heat pump system.

Description

All-weather solar can mix the assisted heat pump water-heater system with sewage
Technical field
The present invention relates to a kind of heat pump water heater system, relate in particular to all-weather solar and can mix the assisted heat pump water-heater system with sewage.
Background technology
In the conventional energy resource that people use, fossil energy is occupied main status at present.But fossil energy belongs to non-renewable energy resources on the one hand, and along with continuous consumption, fossil energy that can be for people to use is fewer and feweri; On the other hand, when using fossil energy, can produce environmentally harmful materials such as great amount of carbon dioxide and sulfur dioxide.The harm that human society uses fossil energy to bring throughout the year, quite serious like problems such as the exhaustion of the energy and ecological deteriorations.
Under this background, solar energy has more and more caused people's attention as a kind of regenerative resource of novel cleaning.The solar energy total amount is huge, and big quantity research has all been carried out to the solar energy utilization in countries in the world since the nineties in last century.China has dropped into a large amount of manpower and materials and has researched and developed also with the key areas of solar energy as energy development, and in Eleventh-Five Year Plan, clearly proposes to accelerate development regenerative resource such as solar energy.But some self-defects of solar energy, low like energy-flux density, with big limitations of problem such as climate change are big its value.
Meanwhile; Bulletin according to the Ministry of Construction " life of urban resident water supply standard (GB/T50331-2002) "; China middle and lower reach of Yangtze River is daily water consumption 120L to 180L per capita, and wherein the overwhelming majority is the assorted draining of high-quality, and the sewage about just average nearly 300L directly is discharged into environment; If can make full use of the utilizable energy that these sanitary sewage waste heats are contained, can reach the purpose of water-saving and electricity-saving.
If common solar water heater is thought the round-the-clock required hot water that provides at present, must add electrical auxiliary heater in addition, so not only increase cost, and reduced its energy-saving benefit.And common heat pump is when heating winter, and for the middle and lower reach of Yangtze River, a certain period can produce frosting owing to outside air temperature is low make refrigerating capacity not enough, and Energy Efficiency Ratio (COP) descends.
If can collected sewage, solar energy and heat pump organically be combined; The energy that both can utilize sewage to store reduces the condensation temperature in summer; Improve refrigerating capacity and COP; Simultaneously can improve evaporating temperature again, slow down evaporimeter frosting problem in winter, and organically combine with solar energy; Do not increasing the solar thermal collector area, do not increasing and round-the-clockly under the condition of cost hot water is provided and according to demand cooling and heat supply, very positive effect is played in this using water wisely and energy-conservation meeting for area, the middle and lower reach of Yangtze River.
Summary of the invention
The objective of the invention is to deficiency to prior art; Provide a kind of all-weather solar can mix the assisted heat pump water-heater system with sewage, it can utilize low grade heat energy sources such as solar energy and sewage, and with solar energy; Sewage ability and heat pump organically combine; Make and reach the electric energy that system consumption is minimum round-the-clock hot-water supply and, have bigger energy-saving potential, practicality and generalization according to the demand heating and refrigerating.
The objective of the invention is to realize through following technical scheme: a kind of all-weather solar can mix the assisted heat pump water-heater system with sewage; It comprises: compressor, four-way change-over valve, condenser, three double-tube heat exchangers, first throttle element, evaporimeter, solar thermal collector, first water pump, water tank, second water pump, first magnetic valve, second magnetic valve, sewage water tank, the 3rd water pump, the 3rd magnetic valve, the 4th magnetic valve, the 5th magnetic valve, the 6th magnetic valve, the 7th magnetic valve, the 8th magnetic valve, the 9th magnetic valve, the tenth magnetic valve, the 11 magnetic valve, second restricting element, the 12 magnetic valve; The outlet of compressor links to each other with condenser through four-way change-over valve; The other end of condenser links to each other with the inlet of three double-tube heat exchanger center-aisles through the tenth magnetic valve, the 9th magnetic valve successively, and the other end of condenser also links to each other with the inlet of three double-tube heat exchanger center-aisles through the 12 magnetic valve, second restricting element, the 11 magnetic valve simultaneously successively.The outlet of three double-tube heat exchanger center-aisles is divided into two-way; One the tunnel links to each other with the inlet of compressor through the 6th magnetic valve, the 7th magnetic valve, four-way change-over valve successively, and another road links to each other with the inlet of compressor through the 5th magnetic valve, first throttle element, evaporimeter, the 8th magnetic valve, four-way change-over valve successively.
The internal layer passage of sewage water tank, the 3rd water pump, the 3rd magnetic valve, three double-tube heat exchangers, the 4th magnetic valve are connected into a loop successively.Water tank, second magnetic valve, three double-tube heat exchanger outer layer channels, second water pump, first magnetic valve are connected into a loop successively.Water tank, solar thermal collector and first water pump are connected into a loop successively.
The present invention compared with prior art, the beneficial effect that has:
1) energy saving: the present invention is through getting up sewage collecting; Can when outdoor climate is abominable, reclaim wherein part cold and heat, reduce the condensation temperature of heat pump summer; The evaporating temperature of heat pump that raises winter, thus make heat pump remain at efficient operation.
2) feature of environmental protection: utilize sewage and residual heat resources thereof fully again, practiced thrift water resource.
3) comfortableness: when defrosting reverse running, from room air do not get can, but from sewage and hot water, get can, can accelerate defrosting, and the comfortableness of assurance indoor heating.
4) round-the-clock property: solar energy and sewage can adding, make the auxiliary heater that can save heat pump and solar energy, and guarantee heating load and the solar energy in heat pump winter problem in the thermal-arrest deficiency in overcast and rainy season.
Description of drawings
Fig. 1 is that all-weather solar can mix assisted heat pump water-heater system flow chart with sewage;
Among the figure: compressor 1; Four-way change-over valve 2; Condenser 3; Three double-tube heat exchangers 4; First throttle element 5; Evaporimeter 6; Solar thermal collector 7; First water pump 8; Water tank 9; Second water pump 10; First magnetic valve 11; First block valve 12; Second magnetic valve 13; Second block valve 14; Sewage water tank 15; The 3rd block valve 16; The 3rd water pump 17; The 3rd magnetic valve 18; The 4th magnetic valve 19; The 4th block valve 20; The 5th magnetic valve 21; The 6th magnetic valve 22; The 7th magnetic valve 23; The 8th magnetic valve 24; The 9th magnetic valve 25; The tenth magnetic valve 26; The 11 magnetic valve 27; Second restricting element 28; The 12 magnetic valve 29.
The specific embodiment
As shown in Figure 1; All-weather solar of the present invention can mix the assisted heat pump water-heater system with sewage, and it comprises: compressor 1, four-way change-over valve 2, condenser 3, three double-tube heat exchangers 4, first throttle element 5, evaporimeter 6, solar thermal collector 7, first water pump 8, water tank 9, second water pump 10, first magnetic valve 11, second magnetic valve 13, sewage water tank 15, the 3rd water pump 17, the 3rd magnetic valve 18, the 4th magnetic valve 19, the 5th magnetic valve 21, the 6th magnetic valve 22, the 7th magnetic valve 23, the 8th magnetic valve 24, the 9th magnetic valve 25, the tenth magnetic valve the 26, the 11 magnetic valve 27, second restricting element the 28, the 12 magnetic valve 29.
The outlet of compressor 1 links to each other with condenser 3 through four-way change-over valve 2; The other end of condenser 3 links to each other with the inlet of three double-tube heat exchangers, 4 center-aisles through the tenth magnetic valve 26, the 9th magnetic valve 25 successively, and the other end of condenser 3 also passes through the 12 magnetic valve 29 simultaneously successively, second restricting element the 28, the 11 magnetic valve 27 links to each other with the inlet of three double-tube heat exchangers, 4 center-aisles.The outlet of three double-tube heat exchangers, 4 center-aisles is divided into two-way; One the tunnel links to each other with the inlet of compressor 1 through the 6th magnetic valve 22, the 7th magnetic valve 23, four-way change-over valve 2 successively, and another road is passed through the 5th magnetic valve 21, first throttle element 5, evaporimeter 6, the 8th magnetic valve 24 successively, four-way change-over valve 2 links to each other with the inlet of compressor 1.
Sewage water tank 15, the 3rd water pump 17, the 3rd magnetic valve 18, three double-tube heat exchangers, 4 internal layer passages, the 4th magnetic valve 19 are connected into a loop successively.
Water tank 9, second magnetic valve 13, three double-tube heat exchangers, 4 outer layer channels, second water pump 10, first magnetic valve 11 are connected into a loop successively.
Water tank 9, solar thermal collector 7 and first water pump 8 are connected into a loop successively.
All-weather solar of the present invention and sewage can mix the assisted heat pump water-heater system and also comprise second block valve 14, the 3rd block valve 16, the 4th block valve 20 and first block valve 12.Second block valve 14 is used for replenishing the water of sewage water tank 15, and the 3rd block valve 16 is used for the water of effluent sewerage water tank 15, and the 4th block valve 20 is used for the water of subsidiary water tank 9, and first block valve 12 is used to discharge the water of water tank 9.But these four parts are not necessary.
The course of work of the present invention is:
It has seven kinds of mode of operations: 1. summer fine mode of operation.Hot water is provided by solar thermal collector.The heat pump refrigerating operation, daytime, the 3rd magnetic valve 18 and the 4th magnetic valve 19 were opened when having detected sewage; When sewage temperature is spent above 35, close the 3rd magnetic valve 18 and the 4th magnetic valve 19, open the 3rd block valve 16; The sewage of draining, at this moment condenser 3 fans are opened, and adopt air-cooled.Be lower than 30 when spending when detecting water tank temperature night, and first magnetic valve 11 and second magnetic valve 13 are opened, and when water temperature is higher than 45 when spending, closes first magnetic valve 11 and second magnetic valve 13, and condenser 3 fans unlatching is at this moment adopted air-cooled.2. summer overcast and rainy mode of operation.Hot water is heated to 45 degree by condenser earlier.The heat pump refrigerating operation, daytime, the 4th magnetic valve 18 and the 5th magnetic valve 19 were opened when having detected sewage; When sewage temperature is spent above 35, close the 4th magnetic valve 18 and the 5th magnetic valve 19, open the 3rd block valve 16; The sewage of draining, at this moment condenser 3 fans are opened, and adopt air-cooled.Be lower than 30 when spending when detecting water tank temperature night, and first magnetic valve 11 and second magnetic valve 13 are opened, and when water temperature is higher than 45 when spending, closes first magnetic valve 11 and second magnetic valve 13, and condenser 3 fans unlatching at this moment is with air-cooled.3. transition season is fine.Hot water is provided by solar thermal collector.4. transition season is overcast and rainy.Hot water is provided by heat pump.During operation of heat pump, the 6th magnetic valve 22, the 7th magnetic valve the 23, the 11 magnetic valve the 27, the 12 magnetic valve 29 are opened, and it is fine that 5. the 5th magnetic valve 21, the 8th magnetic valve 24, the 9th magnetic valve 25, the tenth magnetic valve 26 close winter.Hot water is provided by solar thermal collector.Heat pump heat supply operation, the 5th magnetic valve 21, the 8th magnetic valve 24, the 9th magnetic valve 25, the tenth magnetic valve 26 are opened, and the 6th magnetic valve 22, the 7th magnetic valve the 23, the 11 magnetic valve the 27, the 12 magnetic valve 29 are closed.When detecting condenser/evaporator 3 frostings when the certain thickness, the 3rd magnetic valve 18, the 4th magnetic valve 19 are opened, and condenser/evaporator 3 fans are out of service.6. winter is overcast and rainy.Hot water is during by daytime not heat supply; Heat pump provides; First magnetic valve 11, second magnetic valve 13 are opened; The operation of second water pump 10, the 6th magnetic valve 22, the 7th magnetic valve the 23, the 11 magnetic valve the 27, the 12 magnetic valve 29 are opened, and the 5th magnetic valve 21, the 8th magnetic valve 24, the 9th magnetic valve 25, the tenth magnetic valve 26 are closed.When needing heat supply; First magnetic valve 11, second magnetic valve 13 are closed; The 5th magnetic valve 21, the 8th magnetic valve 24, the 9th magnetic valve 25, the tenth magnetic valve 26 are opened, and the 6th magnetic valve 22, the 7th magnetic valve the 23, the 11 magnetic valve the 27, the 12 magnetic valve 29 are closed.When detecting condenser/evaporator 3 frostings when the certain thickness, the 3rd magnetic valve 18, the 4th magnetic valve 19 are opened, and condenser/evaporator 3 fans are out of service.7. Defrost operation pattern.When sensor detects the needs defrosting; The 5th magnetic valve 21, the 8th magnetic valve 24, the 9th magnetic valve 25, the tenth magnetic valve 26 are closed; The 6th magnetic valve 22, the 7th magnetic valve the 23, the 11 magnetic valve the 27, the 12 magnetic valve 29 are opened; The 3rd magnetic valve 18, the 4th magnetic valve 19 are opened, and the 3rd water pump 17 is opened.The heat pump refrigerating operation.
This system's operation Feasibility Analysis of HV and LV:
According to the data that house and town and country construction portion provide, middle and lower reach of Yangtze River day per capita water consumption be that 120L is to 180L, so about average each family's every day of recyclable sanitary sewage 300L, here just by collecting sewage 300L calculating every day.Get the collection sewage temperature, air-conditioning season (6,7, August) mean temperature 25 degree, heat supply season (12,1, February) mean temperature 12 degree.
Come cooler condenser with sewage summer, about 30 degree of equivalent condensation temperature, and adopt about 35 degree of equivalent condensation temperature when air-cooled, if utilize sewage like this, help reducing condensation temperature, and then the economy of raising operation of heat pump.As calculating by 10 hours total available machine times of 2kW refrigerating capacity in summer, utilize the sewage cooler condenser can continuous service 1.75 hours, it is air-cooled that cooling accounted for 8.25 hours with hot water.Through calculating Arrive,Under the ideal situation, per day Energy Efficiency Ratio (COP) improves about more than 6%.
Utilize collected sewage to defrost winter when outdoor temperature is lower, when supposing to begin to defrost, and frost thickness 0.5mm, frost thickness 300kg/m 3(because frost layer density is out door climatic parameter, the function of frost thickness is the parameter of a variation, provides the density of frosting after 2 hours as a reference according to document here).The full heat exchange area 3.6m of condensing heat exchanger 2, so white layer quality 0.54kg, the about 180.9kJ of consumed energy once defrosts.If according to heat pump COP is 3 calculating, every defrosting once need be taken the about 120kJ of energy in sewage, and defrost ten times (defrosting in a hour once) need energy consumption 1200kJ.300L sewage is reduced to 6 ℃ of energy 7560kJ that can provide from 12 ℃ of degree.For the middle and lower reach of Yangtze River, collected 300L sewage, enough defrosting is used.
When winter outdoor temperature not too low, when need not defrost, can make full use of the heat energy in the sewage, when outside air temperature is lower than sewage season in winter mean temperature, utilize source of sewage, can improve evaporating temperature, and then improve the efficiency of heat pump.Through calculating, under the ideal situation, per day COP can improve about more than 9%.
Transition is in the time of season; Suppose 6 months transition seasons; Having one month needs to use heat pump hot water, and all the other 5 each months are provided by solar thermal collector, and the COP that traditional solar energy adds electrical heating is 6 (promptly consume a electricity and produced 6 parts of heat); And this system is can saves energy under transition season ideal situation about more than 65%, and obvious power savings advantages is arranged.
Said invention all-weather solar and sewage can mix the assisted heat pump water-heater system through with sewage collecting; Can be when outdoor climate be abominable; Reclaim wherein part cold and heat; Reduce the condensation temperature of heat pump summer, the evaporating temperature of heat pump that raises winter, thus make heat pump remain at efficient operation.
Said invention all-weather solar can mix the assisted heat pump water-heater system with sewage and utilize sewage and residual heat resources thereof fully again, has practiced thrift water resource.
When said invention all-weather solar can mix the reverse running of assisted heat pump water-heater system defrosting with sewage, do not get ability, but from sewage and hot water, get ability, can accelerate defrosting, and guarantee the comfortableness of indoor heating from room air.
Said invention all-weather solar can mix the adding of assisted heat pump water-heater system solar energy and sewage ability with sewage; The feasible auxiliary heater that can save heat pump and solar energy; And the heating load and the solar energy that guarantee heat pump winter are in the not enough problem of the thermal-arrest in overcast and rainy season.

Claims (1)

1. an all-weather solar can mix the assisted heat pump water-heater system with sewage; It is characterized in that it comprises: compressor (1), four-way change-over valve (2), condenser (3), three double-tube heat exchangers (4), first throttle element (5), evaporimeter (6), solar thermal collector (7), first water pump (8), water tank (9), second water pump (10), first magnetic valve (11), second magnetic valve (13), sewage water tank (15), the 3rd water pump (17), the 3rd magnetic valve (18), the 4th magnetic valve (19), the 5th magnetic valve (21), the 6th magnetic valve (22), the 7th magnetic valve (23), the 8th magnetic valve (24), the 9th magnetic valve (25), the tenth magnetic valve (26), the 11 magnetic valve (27), second restricting element (28), the 12 magnetic valve (29); The outlet of said compressor (1) links to each other with condenser (3) through four-way change-over valve (2); The other end of condenser (3) links to each other with the inlet of three double-tube heat exchangers (4) center-aisle through the tenth magnetic valve (26), the 9th magnetic valve (25) successively, and the other end of condenser (3) also links to each other with the inlet of three double-tube heat exchangers (4) center-aisle through the 12 magnetic valve (29), second restricting element (28), the 11 magnetic valve (27) simultaneously successively; The outlet of three double-tube heat exchangers (4) center-aisle is divided into two-way; One the tunnel links to each other with the inlet of compressor (1) through the 6th magnetic valve (22), the 7th magnetic valve (23), four-way change-over valve (2) successively, and another road links to each other with the inlet of compressor (1) through the 5th magnetic valve (21), first throttle element (5), evaporimeter (6), the 8th magnetic valve (24), four-way change-over valve (2) successively; Internal layer passage, the 4th magnetic valve (19) of said sewage water tank (15), the 3rd water pump (17), the 3rd magnetic valve (18), three double-tube heat exchangers (4) are connected into a loop successively; Said water tank (9), second magnetic valve (13), three double-tube heat exchangers (4) outer layer channel, second water pump (10), first magnetic valve (11) are connected into a loop successively; Said water tank (9), solar thermal collector (7) and first water pump (8) are connected into a loop successively.
CN201010508928A 2010-10-15 2010-10-15 All-weather solar and sewage energy mixed auxiliary heat pump water heater system Expired - Fee Related CN101957063B (en)

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102563866A (en) * 2012-02-03 2012-07-11 广东纽恩泰新能源科技发展有限公司 Commercial air-source heat pump water heating device with stepping adjustable power
CN105402803A (en) * 2015-12-18 2016-03-16 山东力诺瑞特新能源有限公司 Multi-energy household heating system
CN110307669B (en) * 2019-06-22 2021-09-28 太原理工大学 Solar energy synergy multi-mode heating device based on compression heat pump circulation
CN110307673B (en) * 2019-06-22 2021-09-28 太原理工大学 Solar energy synergistic heat pump system

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Publication number Priority date Publication date Assignee Title
CN1865783A (en) * 2006-06-15 2006-11-22 康树人 Bathing waste water heat -reclaiming and solar-heating bathing device
JP2007170690A (en) * 2005-12-19 2007-07-05 Sharp Corp Heat pump water heater and its control method
KR100903765B1 (en) * 2008-07-11 2009-06-18 박정식 Central air conditioning and heating system using the solar heat and contractile heat heat pump
CN101504190A (en) * 2009-03-11 2009-08-12 黄邦兴 Waste hot water waste heat recovery type heat pump water heating system

Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
JP2007170690A (en) * 2005-12-19 2007-07-05 Sharp Corp Heat pump water heater and its control method
CN1865783A (en) * 2006-06-15 2006-11-22 康树人 Bathing waste water heat -reclaiming and solar-heating bathing device
KR100903765B1 (en) * 2008-07-11 2009-06-18 박정식 Central air conditioning and heating system using the solar heat and contractile heat heat pump
CN101504190A (en) * 2009-03-11 2009-08-12 黄邦兴 Waste hot water waste heat recovery type heat pump water heating system

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