CN201866994U - Solar energy-air-geothermal energy multi-source double-compressor heat pump heat supply air conditioning combined system - Google Patents
Solar energy-air-geothermal energy multi-source double-compressor heat pump heat supply air conditioning combined system Download PDFInfo
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- CN201866994U CN201866994U CN2010206081391U CN201020608139U CN201866994U CN 201866994 U CN201866994 U CN 201866994U CN 2010206081391 U CN2010206081391 U CN 2010206081391U CN 201020608139 U CN201020608139 U CN 201020608139U CN 201866994 U CN201866994 U CN 201866994U
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Abstract
The utility model provides a solar energy-air-geothermal energy multi-source double-compressor heat pump heat supply air conditioning combined system, which relates to the heat supply air condition refrigeration combined system using solar energy, air and a ground buried pipe ground source heat pump as cold and heat sources and belongs to the technical field of building environment and equipment engineering and refrigeration engineering. The heat supply air conditioning combined system concretely comprises a solar heat collector (1), a ground buried pipe (3), a heat accumulation water tank (13), a heat accumulation/exchange water tank (7), a control system, a tail end user (16) and the like. The utility model provides the multi-source double-compressor heat pump system using the solar energy, the geothermal energy and the air as the cold and heat sources, the system can be used for heating in winter and refrigeration in summer, and domestic hot water is provided in the whole year. In addition, the overheating of the solar energy heat collector is avoided in summer, the solar energy heat is accumulated in soil to be used in winter, and the heat supply air conditioning combined system has better applicability particularly when being used in regions with winter heat load greater than summer cold load.
Description
Technical field
The utility model relate to a kind of with solar energy, air, the pipe laying earth source heat pump be the heat supplying air conditioning refrigeration hybrid system of Cooling and Heat Source, belong to Building Environment and Equipment Engineering and Refrigeration Engineering technical field.
Background technology
Current, energy shortage and environmental pollution have become two outstanding problems of the global sustainable development of restriction, cause the concern of countries in the world.For this reason, develop effective development strategy that regenerative resource has become various countries energetically.And the regenerative resource that can be utilized mainly contain solar energy, can and air-energy.In addition, along with the development of society and the raising of people's living standard, it is increasing with the ratio that the energy resource consumption of hot water accounts for energy total amount to be used for heating, air-conditioning and life.Therefore to solar energy, can and air applications in heating, air-conditioning and life more and more widely with the research of hot water.
Solar energy is as the regenerative resource that has huge prospect and market, and its exploitation and effective utilization more and more come into one's own.Ground can utilize the underground geothermal using resource temperature uniformity of (comprising underground water, underground ground or surface water etc.), but is not only heat supply but also the high efficient energy sources that can freeze.The wherein less restriction that is subjected to environmental condition of pipe laying earth-source hot-pump system, thereby come into one's own just day by day.Air can be most widely used in the present regenerative resource.But this three has the shortcoming of oneself in application: solar energy is subjected to the influence of intensity of sunshine, can not keep constant, and stand-by power source must be provided; The utilization of ground energy is subjected to the restriction of floor space, and air can also can be subjected to the amblent air temperature condition effect.Therefore be necessary to unite utilize solar energy, can and the air energy, carrying out the heat supplying air conditioning refrigeration more efficiently, with the quality of the life that improves people better with reduce consumption to conventional energy resource.
In existing solar energy Multisource heat pump heat supplying air conditioning Refrigeration Technique patent, with in the majority as compound Cooling and Heat Source of solar energy and air, as 200910028142.8 " realizing the building integrated solar air source source pump ", " 200910033558.9 can realize the solar auxiliary air source heat pump device of multi-mode operation ", " 200720181525.5 the two thermal source radiant heating plant of floor of solar heat pipe collector and air source heat pump " or the like, perhaps solar energy and ground can be united, as 02146305.0 " soil thermal storage formula solar heat pump heating system and heat supply method ".Retrieve at present with solar energy, can and air jointly as the heat pump of Cooling and Heat Source 1 example only, 200820069365.X " air-solar energy-ground can three heat-source composite heat pump devices ".In this patent, core component is fin-sleeve type three mediums composite heat exchanger, the fin that this composite heat exchanger comprises outer tube, is installed on the inner sleeve in the outer tube and combines with the outer tube outer wall.Annular space between inner sleeve outer wall and the outer sleeve inner wall is a kind of medium channel, and the tube chamber of inner sleeve constitutes another kind of medium channel, constitutes the air heat source medium channel between outer tube outer wall and the fin.But there is a problem in this heat exchanger: the temperature that the hot water that solar energy or ground can provide has is being opposite with the temperature of air sometimes, as the hot water temperature who provides is greater than refrigerant temperature, and air themperature is during less than refrigerant temperature, and this can reduce the efficiency of cold-producing medium.And for source pump, for the heat exchanger of air source and water source side, the cold-producing medium parameter is different, if forced to put together in air source and water source, may have influence on the performance of compressor.
The utility model content
At above-mentioned problem, in view of present compressor energy-efficient in heat pump, and the characteristics that price is not high, the utility model provide a kind of utilize solar energy, can and air as the heat pump of the multi-source double-compressor of Cooling and Heat Source, this system can heat winter, freeze summer, and life hot water being provided the whole year.And there is not the problems of excessive heat of solar thermal collector summer in this system because summer, unnecessary solar heat stored in soil, in order to using winter, especially in the winter time thermic load greater than summer refrigeration duty the area have more application.
A kind of solar energy-air-ground can multi-source two-shipper heat pump heat supplying air conditioning hybrid system, comprising: solar thermal collector, pipe laying, hot water storage tank, hold/heat-exchanging water tank, devices such as control system and terminal temperature difference, connect by pipeline, specifically:
Solar thermal collector is used to collect solar heat and adds hot water, and coming with this is that hot water and winter heating, the air-conditioning of the whole year provides energy.By pipeline solar thermal collector and ground pipe laying, hot water storage tank and hold/heat-exchanging water tank are coupled together, the unlatching of control system by-pass valve control makes the hot water in the solar thermal collector to lead to ground pipe laying, hot water storage tank respectively and holds/heat-exchanging water tank, thereby realize soil thermal storage in summer, annual hot water supply, and provide heat for terminal temperature difference.The shell side gateway of solar thermal collector is connected respectively to first cross valve and first water circulating pump, and first water circulating pump is connected to second cross valve.
The ground pipe laying is realized the heat exchange of intraductal heat exchange medium and soil, and its two ends are connected respectively to first cross valve and second cross valve; Winter, ground pipe laying and solar thermal collector can be jointly as thermal source heating hold/water in the heat-exchanging water tank; In summer, the unnecessary heat that the ground pipe laying can be collected solar thermal collector stores, in order to using winter.The ground pipe laying has played the effect of the earth storage heater, but also the Winter heat supply quantity not sufficient of having avoided the regular solar heating system to run into, and heat can't be got rid of and forms phenomenon overheated or that burn in the summer heat collector.
Hot water storage tank is provided with standby electric heater, second water compensating valve, and is connected to hot-water supply device by the first flow control valve; The two ends of hot water storage tank are connected respectively to first cross valve and second cross valve; Hot water storage tank is mainly used in annual hot water supply.The shortage of heat that provides when solar energy is when satisfying the demand of hot water the severe cold time in the winter time, and the standby electric heater in the water tank is opened, and heats to satisfy the demand.
Hold/the shell side gateway of heat-exchanging water tank is connected respectively to first cross valve and second cross valve, and its tube side gateway is connected respectively to first refrigeration cross valve and the first throttle device, and the other end of first throttle device is connected to second triple valve; Hold/heat-exchanging water tank is provided with first water compensating valve, and be connected to hot-water supply device by second Flow-rate adjustment dress valve; The first refrigeration cross valve is connected to first triple valve by first compressor; Hold/heat-exchanging water tank has the effect of storage heater and heat exchanger concurrently.When hold/heat-exchanging water tank is during as storage heater, the heat heating water wherein that stores solar thermal collector and ground pipe laying winter is for winter heating air-conditioning and hot water supply; Storing the heat of discharging from terminal temperature difference summer provides hot water for bathing.When hold/heat-exchanging water tank is during as heat exchanger, then is a part of combined heat-pump water resource heat pump, be the condenser of water resource heat pump summer, be the evaporimeter of water resource heat pump winter.
The tube side gateway of second heat exchanger is connected respectively to the second refrigeration cross valve and second throttling arrangement, and the second refrigeration cross valve is connected to first triple valve by second compressor, and the second throttling arrangement other end is connected to second triple valve; The outer ventilating air of the pipe of second heat exchanger.
The tube side gateway of first heat exchanger connects first triple valve and second triple valve respectively; The shell side gateway of first heat exchanger connects the 3rd water circulating pump and air conditioning terminal respectively.
Control system be used to control control each valve by operational mode and water temperature unlatching whether, with the control whole system, realize solar thermal collector, unlatching, the operation of pipe laying, air source heat pump and water resource heat pump, this is to realize easily.
Air conditioning terminal adopts the form of floor heating in winter, summer fan coil or all be the form of radiation air-conditioner, realizes cold or exchange heat by the 3rd water circulating pump and first heat exchanger, and this is easy realization.
Preferably, described solar thermal collector is flat plate collector, glass vacuum pipe heat collector, U type tubular type vacuum tube collector, heat pipe vacuum tube hot collector and single flow vacuum tube collector etc.
Preferably, described ground pipe laying is vertical U-type pipe laying, horizontal coiled pipe, stake pipe laying or continuous helical pipe laying etc.
Further, hold/heat-exchanging water tank, two heat exchangers, two compressors, two refrigeration cross valves, two throttling arrangements, two triple valves constitute combined heat-pump systems; Wherein, hold/heat-exchanging water tank, first refrigeration cross valve, first compressor, first throttle device constitute water resource heat pump, second heat exchanger, the second refrigeration cross valve, second compressor, second throttling arrangement constitute air source heat pump, and first heat exchanger is as the user side heat exchanger; The common transformation that realizes that summer in combined heat-pump system winter, cold-producing medium working medium flowed to, thus make 2 heat exchangers in two heat pumps realize evaporimeter and the effect of condenser in opposite summer in winter.Combined heat-pump system comprises two cover heat pumps: water resource heat pump and air source heat pump.This two covers heat pump all is made up of 2 heat exchangers, compressor, throttling arrangement and refrigeration cross valve respectively.Their shared user side heat exchanger, other heat exchanger is the heat exchanger of corresponding water side, air side respectively, and water-side heat is and holds/heat-exchanging water tank.Four-way change-over valve is realized the transformation that summer in heat pump winter, cold-producing medium working medium flowed to, thereby makes 2 heat exchangers in two heat pumps realize evaporimeter and the effect of condenser in opposite summer in winter.The user is the evaporimeter of combined heat-pump system with heat exchanger in summer, and be condenser winter, and the effect of the heat exchanger of water side and air side is just in time in contrast, give respectively summer condenser, winter evaporimeter.
Water compensating valve is to mending in the water tank.Flow control valve is then controlled flow by the requirement of hot water supply.Triple valve can be shunted, and also can collaborate, and provides operational mode to control mobile direction.Cross valve has the refrigeration cross valve in the heat pump refrigerating circulation, and common cross valve.The refrigeration cross valve can be controlled the flow direction of cold-producing medium by different operation of heat pump patterns, and common cross valve is then by the comparison pattern of setting, by solar thermal collector, hot water storage tank with hold/and the water temperature in the heat-exchanging water tank controls the unlatching of four-way all directions.
Winter is when sunny, and after solar thermal collection system was gathered solar energy, after the domestic water in the heating hot water storage tank reached design temperature earlier, heating was held/water in the heat-exchanging water tank again, for water source heat pump system provides heat.Hold when heat that solar thermal collection system provides is enough to satisfy/during water temperature needs in heat-exchanging water tank, ground pipe laying heat-exchange system is closed.And when hold/when water temperature in the heat-exchanging water tank was lower than water temperature in the solar thermal collector, solar thermal collection system was out of service, change by buried guard system come for hold/heat exchanger provides heat.Simultaneously, air source heat pump is worked when outdoor temperature is suitable, closes when temperature is low.The deficiency of so also having avoided air source heat pump when low temperature, can't work.When continuous bad weather, when the water temperature of the shortage of heat that solar thermal collection system provides in satisfying hot water storage tank required, standby electric heater operation added hot water to the temperature that requires.
In summer, the heat that air source heat exchanger transmits the user as the condenser of heat pump is discharged to outdoor, the heat that certain customers discharge can also heat by water resource heat pump hold/water in the heat-exchanging water tank uses for life.Behind the solar thermal collector collecting energy, after the domestic water in the heating hot water storage tank reaches design temperature earlier, directly inject buried guard system again, unnecessary solar heat is directly stored in the soil of buried guard system, in order to using winter.
The utility model provide with solar energy, can and air be that the advantage of the multi-source two-shipper heat pump heat supplying air conditioning hybrid system of Cooling and Heat Source is: (1) with cleaning, reproducible solar energy, air energy and most energy can be provided, not only can annual heat supply but also can carry out air-conditioning heating, have advantages such as energy-conservation, efficient, environmental protection.(2) summer air-conditioning mainly is that air source heat pump and water resource heat pump by combined heat-pump system realized, water resource heat pump can also heat hold/water in the heat-exchanging water tank is used for living needs.And the energy of solar thermal collector collection is mainly arranged to the earth, avoided the summer heat collector overheated, made the earth play the effect of storage heater, in order to using winter, the annual cooling and heating load balance that more helps earth-source hot-pump system is applicable to that the winter thermic load is greater than the area of refrigeration duty in summer.(3) winter, solar thermal collector, the air source heat pump of pipe laying, combined heat-pump system energy is provided jointly, be used for heating and domestic hot-water.Wherein, solar thermal collector and air source heat pump are opened when outdoor climate satisfies condition.Standby electric heater can replenish life hot water institute calorific requirement under the extreme condition.
Description of drawings
Fig. 1 is a system principle schematic diagram of the present utility model.
Wherein, the 1st, solar thermal collector, the 2nd, water circulating pump, the 3rd, ground pipe laying, the 4th, cross valve, the 5th, hot water supply, the 6th, water compensating valve, the 7th, hold/heat-exchanging water tank, the 8th, the refrigeration cross valve, the 9th, compressor, the 10th, heat exchanger, the 11st, throttling arrangement, the 12nd, triple valve, the 13rd, hot water storage tank, the 14th, standby electric heater, the 15th, flow control valve, the 16th, terminal temperature difference.
The specific embodiment
Further explain, illustrate the technical program with non-limiting embodiment below.
A kind of solar energy-air-ground energy multi-source two-shipper heat pump heat supplying air conditioning hybrid system, as shown in Figure 1, comprise: solar thermal collector 1, pipe laying 3, hot water storage tank 13, hold/heat-exchanging water tank 7, control system and terminal temperature difference 16 etc., connect by pipeline, specifically:
Solar thermal collector 1 is used to collect solar heat and adds hot water, and the shell side gateway of solar thermal collector 1 is connected respectively to the first cross valve 4-1 and the first water circulating pump 2-1, and the first water circulating pump 2-1 is connected to the second cross valve 4-2;
Ground pipe laying 3 is realized the heat exchange of intraductal heat exchange medium and soil, and its two ends are connected respectively to the first cross valve 4-1 and the second cross valve 4-2;
Hot water storage tank 13 is provided with standby electric heater 14, the second water compensating valve 6-2, and is connected to hot-water supply device 5 by first flow control valve 15-1; The two ends of hot water storage tank 13 are connected respectively to the first cross valve 4-1 and the second cross valve 4-2;
Hold/the shell side gateway of heat-exchanging water tank 7 is connected respectively to the first cross valve 4-1 and the second cross valve 4-2, its tube side gateway is connected respectively to first refrigeration cross valve 8-1 and the first throttle device 11-1, and the other end of first throttle device 11-1 is connected to the second triple valve 12-2; Hold/heat-exchanging water tank 7 is provided with the first water compensating valve 6-1, and be connected to hot-water supply device 5 by second Flow-rate adjustment dress valve 15-2; The first refrigeration cross valve 8-1 is connected to the first triple valve 12-1 by the first compressor 9-1;
The tube side gateway of the second heat exchanger 10-2 is connected respectively to the second refrigeration cross valve 8-2 and the second throttling arrangement 11-2, the second refrigeration cross valve 8-2 is connected to the first triple valve 12-1 by the second compressor 9-2, and the second throttling arrangement 11-2 other end is connected to the second triple valve 12-2; The outer ventilating air of the pipe of the second heat exchanger 10-2;
The tube side gateway of the first heat exchanger 10-1 connects the first triple valve 12-1 and the second triple valve 12-2 respectively; The shell side gateway of the first heat exchanger 10-1 connects the 3rd water circulating pump 2-1 and air conditioning terminal 16 respectively;
Control system be used to control control each valve by operational mode and water temperature unlatching whether, with the control whole system, this is to realize easily under existing control technology condition, so do not giving unnecessary details;
Air conditioning terminal 16 adopts the form of floor heatings in winter, summer fan coil or all be the form of radiation air-conditioner, by the 3rd water circulating pump 2-3 and first heat exchanger 10-1 realization cold or exchange heat.
Summer: after the water temperature in the solar thermal collector 1 is higher than setting value, the a of cross valve 4-1 and 4-2, b are to open-minded, water circulating pump 2-1 opens, thereby the water in the hot water storage tank 13 is heated, after the water temperature in the hot water storage tank 13 was higher than life and requires with hot water, the b of cross valve 4-1 and 4-2 was to closing, and d is to open-minded, directly the water in the heat collector 1 is injected in the ground pipe laying 3, thereby the energy of the sun is stored in the soil.After water temperature in the solar thermal collector 1 was lower than setting value, a of cross valve 4-1 and 4-2 was to closing with water circulating pump 2-1.
What the air conditioning terminal user 16 in summer adopted is " refrigeration " pattern.Under this pattern, the refrigerant in the combined heat-pump system flows to shown in Fig. 1 solid line.The heat part that the user discharges drains into heat exchanger 10-2 by the cold-producing medium periodic duty, is taken away by air; A part drains into by the cold-producing medium periodic duty holds/heat-exchanging water tank 7 water in the heating water tank.When the water temperature height in the water tank 7 when setting value, to closing, water resource heat pump quits work a of compressor 9-1 and triple valve 12-1 to the d of, triple valve 12-2; The heat that the user discharges is all born by air source heat pump.When hold/after water temperature in the heat-exchanging water tank 7 reduced, to unlatching, water resource heat pump restarted work to a of compressor 9-1 and triple valve 12-1 to the d of, triple valve 12-2.
When hot water supply in summer 5 is opened, preferential turn-on flow rate control valve 15-2, use to hold/heat-exchanging water tank 7 provides life hot water.Open water compensating valve 6-1 simultaneously and carry out moisturizing so that water resource heat pump holding/can efficient operation in the heat-exchanging water tank 7.When the water temperature of holding/providing in the heat-exchanging water tank 7 does not reach the domestic hot-water when requiring, flow control valve 15-1 opens, and hot water storage tank 13 also provides hot water simultaneously.
Winter: when the water temperature in the solar thermal collector 1 is higher than the water temperature of 13 li of hot water storage tanks, the a of cross valve 4-1 and 4-2, b are to open-minded, water circulating pump 2-1 opens, thereby the water in the hot water storage tank 13 is heated, after the water temperature in the hot water storage tank 13 was higher than life and requires with hot water, the b of cross valve 4-1 and 4-2 was to closing, and c is to open-minded, thereby stop hot water storage tank 13 is heated, begin holding/the water heating of 7 li of heat-exchanging water tanks.Hold when the water temperature in the solar thermal collector 1 is lower than/water temperature of 7 li of heat-exchanging water tanks after, the b of cross valve 4-1 and 4-2 is to closing with water circulating pump 2-1, solar thermal collection system is out of service.Meanwhile, the d of cross valve 4-1 and 4-2 is to open-minded, and water circulating pump 2-2 opens, and ground pipe laying heat-exchange system begins holding/the water heating of 7 li of heat-exchanging water tanks.
What winter air-conditioning terminal temperature difference 16 adopted is " heating " pattern.Under this pattern, the refrigerant in the combined heat-pump system flows to shown in dotted line on Fig. 1.The heat that the user needs mainly by hold/water in the heat-exchanging water tank 7 provide.At this moment, compressor 9-1 starts, a of triple valve 12-1 to the d of, triple valve 12-2 to unlatching, water resource heat pump work.When outdoor temperature reached the required value of setting, compressor 9-2 started, and to unlatching, air source heat pump also begins to work simultaneously the b of triple valve 12-1 to a of, triple valve 12-2.After outside air temperature was reduced to required value, to closing, air source heat pump quit work the b of compressor 9-2, triple valve 12-1 to a of, triple valve 12-2.
When hot water supply in winter 5 was opened, turn-on flow rate control valve 15-1 used hot water storage tank 13 that life hot water is provided.Flow control valve 15-2 is normal closing.Under extreme conditions, for example continuously overcast and rainy, sleety weather, the water temperature that solar thermal collector can't work or provide is not enough to satisfy the demand, and then opens standby electric heater 14, the water of 13 li of hot water storage tanks is heated, to satisfy life hot water requirement.
Claims (4)
1. a solar energy-air-ground can multi-source two-shipper heat pump heat supplying air conditioning hybrid system, it is characterized in that comprising: solar thermal collector (1), pipe laying (3), hot water storage tank (13), hold/heat-exchanging water tank (7), control system and terminal temperature difference (16), specifically:
The shell side gateway of solar thermal collector (1) is connected respectively to first cross valve (4-1) and first water circulating pump (2-1), and first water circulating pump (2-1) is connected to second cross valve (4-2);
Ground pipe laying (3) is realized the heat exchange of intraductal heat exchange medium and soil, and its two ends are connected respectively to first cross valve (4-1) and second cross valve (4-2);
Hot water storage tank (13) is provided with standby electric heater (14), second water compensating valve (6-2), and is connected to hot-water supply device (5) by first flow control valve (15-1); The two ends of hot water storage tank (13) are connected respectively to first cross valve (4-1) and second cross valve (4-2);
The shell side gateway of holding/heat-exchanging water tank (7) is connected respectively to first cross valve (4-1) and second cross valve (4-2), its tube side gateway is connected respectively to first refrigeration cross valve (8-1) and the first throttle device (11-1), and the other end of first throttle device (11-1) is connected to second triple valve (12-2); Hold/heat-exchanging water tank (7) and be provided with first water compensating valve (6-1), and be connected to hot-water supply device (5) by second Flow-rate adjustment dress valve (15-2); The first refrigeration cross valve (8-1) is connected to first triple valve (12-1) by first compressor (9-1);
The tube side gateway of second heat exchanger (10-2) is connected respectively to second refrigeration cross valve (8-2) and second throttling arrangement (11-2), the second refrigeration cross valve (8-2) is connected to first triple valve (12-1) by second compressor (9-2), and second throttling arrangement (11-2) other end is connected to second triple valve (12-2); The outer ventilating air of the pipe of second heat exchanger (10-2);
The tube side gateway of first heat exchanger (10-1) connects first triple valve (12-1) and second triple valve (12-2) respectively; The shell side gateway of first heat exchanger (10-1) connects the 3rd water circulating pump (2-1) and air conditioning terminal (16) respectively;
Control system be used to control control each valve by operational mode and water temperature unlatching whether, with the control whole system;
Air conditioning terminal (16) adopts the form of floor heating in winter, summer fan coil or all be the form of radiation air-conditioner, by the 3rd water circulating pump (2-3) and first heat exchanger (10-1) realization cold or exchange heat.
2. solar energy-air according to claim 1-ground energy multi-source two-shipper heat pump heat supplying air conditioning hybrid system, it is characterized in that: described solar thermal collector is flat plate collector, glass vacuum pipe heat collector, U type tubular type vacuum tube collector, heat pipe vacuum tube hot collector and single flow vacuum tube collector.
3. solar energy-air according to claim 1-ground energy multi-source two-shipper heat pump heat supplying air conditioning hybrid system, it is characterized in that: the ground pipe laying is vertical U-type pipe laying, horizontal coiled pipe, stake pipe laying or continuous helical pipe laying.
4. solar energy-air according to claim 1-ground can multi-source two-shipper heat pump heat supplying air conditioning hybrid system, it is characterized in that: hold/heat-exchanging water tank (7), two heat exchangers (10-1,10-2), two compressors (9-1,9-2), two refrigeration cross valves (8-1,8-2), two throttling arrangements (11-1,11-2), two triple valves (12-1,12-2) constitute combined heat-pump system; Wherein, hold/heat-exchanging water tank (7), the first refrigeration cross valve (8-1), first compressor (9-1), first throttle device (11-1) formation water resource heat pump, second heat exchanger (10-2), the second refrigeration cross valve (8-2), second compressor (9-2), second throttling arrangement (11-2) constitute air source heat pump, and first heat exchanger (10-1) is as the user side heat exchanger; The common transformation that realizes that summer in combined heat-pump system winter, cold-producing medium working medium flowed to, thus make 2 heat exchangers in two heat pumps realize evaporimeter and the effect of condenser in opposite summer in winter.
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| CN101988775A (en) * | 2010-11-16 | 2011-03-23 | 山东建筑大学 | Solar-air-geothermal multisource dual-machine heat pump heat supply and air conditioning composite system |
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| CN104633980A (en) * | 2015-02-06 | 2015-05-20 | 河北联合大学 | Solar energy and geothermal energy complementation type wind energy heat pump system |
| CN105928253A (en) * | 2016-05-18 | 2016-09-07 | 胡振强 | Solar energy, geotherm and air energy comprehensive utilization heat pump system |
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| CN109268923A (en) * | 2018-10-30 | 2019-01-25 | 天津商业大学 | Only building energy energy conservation feed system of typical northern country |
| CN109268923B (en) * | 2018-10-30 | 2023-11-10 | 天津商业大学 | Energy-saving supply system for typical northern rural single building |
| CN112781276A (en) * | 2020-04-08 | 2021-05-11 | 青岛海尔新能源电器有限公司 | Low-grade heat source heat pump system |
| CN115962508A (en) * | 2021-12-28 | 2023-04-14 | 重庆大学 | House temperature regulation and control system based on solar energy utilization |
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