CN105276833A - Solar water heating system and heat pump heating and refrigerating system and method thereof - Google Patents

Solar water heating system and heat pump heating and refrigerating system and method thereof Download PDF

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CN105276833A
CN105276833A CN201510759923.XA CN201510759923A CN105276833A CN 105276833 A CN105276833 A CN 105276833A CN 201510759923 A CN201510759923 A CN 201510759923A CN 105276833 A CN105276833 A CN 105276833A
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heat exchanger
water
water tank
solar
heating
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CN105276833B (en
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何国青
李至远
刘灯标
刘天际
许建丰
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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
    • 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

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Abstract

The invention discloses a solar heat pump heating and refrigerating system and a method thereof. According to a solar water heating system, the flow direction of circulating fluid at the outlet of a heat collector is changed through a flow direction adjusting device, so that hierarchical heat storage of solar energy in multiple water tanks is achieved. The solar heat pump heating and refrigerating system is based on the solar water heating system and combined with an air source heat pump water heating system. During a heating cycle, energy is obtained from air to heat the first water tank with a heat exchanger as an evaporator. The heat exchanger serves as a condenser when frosting, and energy is obtained from the second water tank to defrost. In addition, according to the solar heat pump heating and refrigerating method based on the solar heat pump heating and refrigerating system, different operation modes are adopted according to different seasons by adjusting opening and closing of all valves. According to the solar heat pump heating and refrigerating system, the water tanks are adopted for hierarchical energy storage according to the solar energy radiation intensity, so that the use ratio of the solar energy is improved, and a good heat supply or cool supply effect can also be maintained under extreme conditions.

Description

A kind of solar water heating system and heat pump heat refrigeration system and method thereof
Technical field
The invention belongs to solar heat pump field, be specifically related to a kind of solar water heating system and heat pump heats refrigeration system and method thereof.
Background technology
Along with our people's growth in the living standard, building energy consumption constantly increases, and wherein building heat supplying and domestic hot-water's energy consumption increase especially fast.Traditional is fossil fuel for heat energy, belongs to non-renewable, and causes air pollution, but also cause global warming.At south China and hot-summer and cold-winter area, there is the low problem of wasting with energy grad of efficiency in hot water supply system's many employings gas heater and electric heater.Therefore, solar thermal utilization and efficient air source hot pump water heater are good energy-saving schemes.
But these two technology have applied shortcoming separately.Solar energy is the unstable energy, and when solar radiation is not enough, cannot meet for warm hot water demand, the efficiency of air source heat pump then reduces along with ambient temperature and reduces, and when microthermal climate, heating effect cannot ensure.Therefore, two systems combined, improve heat pump efficiency, improving solar energy utilization ratio, is the developing direction of current techniques.
The technical scheme that current this kind of solar energy and heat pump combine mainly is divided into two classes: obtainable for sun heat is used for the evaporation ends thermal source of heat pump by (1), can be that the application of direct-expansion type is (as 200710022284.4,201410222276.4) or use the indirect type (or tandem, as patent CN201220382850.9) of hot water storage tank.Although this method can improve solar radiation very little time collecting efficiency, this part this height of solar energy is little, and needs the merit by consuming compressor to obtain.This part extra power consumption makes entire system Energy Efficiency Ratio so not good.In addition, it is large to there is compressor evaporation ends working conditions change in direct Peng's formula system, and defrosting is frozen, and overheated problem, large to the requirement of compressor, causes poor practicability.Finally, for the system that equipment comparatively disperses, the system of direct-expansion type increases the consumption of cold-producing medium, adds expense.(2) solar energy thermal source as a supplement, and air source heat pump is in parallel to water tank heat supply (as patent 200810026991.5).This stability of a system and reliability good compared with the first, but because solar thermal collection system is in the mode of operation of high-temperature water tank all the time, collecting efficiency is not high.
Therefore, current solar energy and heat pump are combined in the space that efficiency aspect also has improvement.
Summary of the invention
The object of the invention is to solve problems of the prior art, and a kind of multifunctional solar heat pump air-conditioning system and method thereof are provided.Concrete technical scheme is as follows:
The present invention provide firstly a kind of solar water heating system, comprises first-class to adjusting device, second to adjusting device, solar thermal collector, water circulating pump, First Heat Exchanger, the first water tank and the second water tank; First Heat Exchanger is arranged in the first water tank; The delivery port of solar thermal collector connects the first-class entrance to adjusting device; First-class outlet one tunnel to adjusting device is connected with the entrance of First Heat Exchanger, and another road is connected with the outlet of First Heat Exchanger, and second is connected to the entrance of adjusting device and the outlet of First Heat Exchanger; Second is connected to outlet one tunnel of adjusting device with the second tank entry, and another road is connected with the second tank outlet, and the outlet of the second water tank is connected with solar thermal collector; Water circulating pump is used for providing power for solar water heating system; First-class to adjusting device, second to adjusting device for change outlet circulating fluid to.
Preferably, also comprise the second heat exchanger, second heat exchanger is arranged in the second water tank, the road that second is connected with the second tank entry in the outlet of adjusting device extends and is connected with the entrance of the second heat exchanger, and the road that second is connected with the second tank outlet in the outlet of adjusting device extends and is connected with the outlet of the second heat exchanger.
Preferably, also comprise three-tank and the 7th heat exchanger, the 7th heat exchanger is arranged in three-tank, and the 7th heat exchanger import is connected with first-class the 3rd way outlet to adjusting device, exports and is connected with the entrance of First Heat Exchanger.
Present invention also offers a kind of solar heat pump heating refrigeration system, except comprising above-mentioned solar water heating system, also comprise air source heat pump hot water system.Include the 8th heat exchanger in air source heat pump hot water system, heating circulation time, the 8th heat exchanger obtains energy warms first water tank as evaporimeter from air; When the 8th heat exchanger frosting, the 8th heat exchanger, as condenser, obtains energy from the second water tank and defrosts.
Preferably, when system carries out heating and freezing, obtain heat to the first heating water tanks and by the 8th heat exchanger to air heat release from the second water tank.
As a kind of implementation of above-mentioned preferred version, the described air source heat pump circulatory system comprises compressor, first cross valve, first triple valve, 3rd heat exchanger, the second cross valve, choke valve, 4th heat exchanger and the second triple valve, the 3rd described heat exchanger and the 4th heat exchanger are arranged in the first water tank and the second water tank respectively, the 3rd described heat exchanger one end is held with the D of the first cross valve and is connected, the other end is held with the b of the second cross valve and is connected, 4th heat exchanger one end is held with the c of the second cross valve and is connected, the other end is connected with one end of the second triple valve, second cross valve d end successively with choke valve, one end of 8th heat exchanger and the first triple valve is connected, second end of the first triple valve is held with the C of the first cross valve and is connected, 3rd end of the first triple valve is held with a of the second cross valve and is connected, second end of the second triple valve is held with the D of the first cross valve and is connected, 3rd end of the second triple valve is held with the C of the first cross valve and is connected, the entrance and exit of compressor is connected with the side a and b of the first cross valve respectively.
Meanwhile, present invention also offers a kind of solar heat pump heating refrigerating method using said system, different running method can be taked according to Various Seasonal, specific as follows:
Winter heating's water warm pattern: when there being solar radiation, water circulating pump starts, and enters solar heating season hot water cyclesystem operational mode; If when the first water tank water temperature does not reach design temperature, start heat-pump hot-water circulatory system operational mode, when the 8th heat exchanger needs defrosting, heat pump enters cooling cycle system operational mode;
Transition season list water heating pattern: when there being solar radiation, water circulating pump starts, and enters solar energy non-heating season hot water cyclesystem operational mode, if the first water tank water temperature does not reach design temperature, starts heat-pump hot-water circulatory system operational mode;
Summer water heating and air conditioning mode: when there being solar radiation, water circulating pump starts, enter solar energy non-heating season hot water cyclesystem operational mode, if the first water tank water temperature does not reach design temperature, start heat pump water heating refrigeration mode, if water temperature reaches design temperature, then start cooling cycle system operational mode.
Preferably, described solar heating season hot water cyclesystem operational mode adopts following connection:
When temperature more than the first water tank of the outlet temperature of solar thermal collector, the entrance of First Heat Exchanger is pointed in the first-class outlet to adjusting device, another port closing, second points to the entrance of the second heat exchanger to the outlet of adjusting device, another port closing, realizes solar energy successively to the function of the first water tank, the second heating water tanks; When the outlet temperature of solar thermal collector more than the temperature of the second water tank and temperature lower than the first water tank time, the outlet of First Heat Exchanger is pointed in the first-class outlet to adjusting device, another port closing, second points to the entrance of the second heat exchanger to the outlet of adjusting device, another port closing, realizes solar energy only to the function of the second heating water tanks;
Described solar energy non-heating season hot water cyclesystem operational mode adopts following connection:
The entrance of First Heat Exchanger is pointed in the first-class outlet to adjusting device, another port closing, and second points to the outlet of the second heat exchanger to the outlet of adjusting device, and another port closing, realizes only to the first heating water tanks;
Described heat-pump hot-water circulatory system operational mode adopts following connection:
The A end of the first cross valve is connected with C end, B end is connected with D end, the a end of the second cross valve is connected with c end, b end is connected with d end, second triple valve connects D end and the 4th heat exchanger of the first cross valve, first triple valve connects C end and the 8th heat exchanger of the first cross valve, and the other end is closed, and realizes air source heat pump system to the first heating water tanks;
Described cooling cycle system operational mode adopts following connection:
The B end of the first cross valve is connected with C end, A with D is connected, the a end of the second cross valve is connected with b end, c end is connected with d end, the D mouth that second triple valve connects the first cross valve connects, and the second triple valve connects D end and the 4th heat exchanger of the first cross valve, and the first triple valve connects C end and the 8th heat exchanger of the first cross valve, the other end is closed, and realizes cooling second water tank;
Described heat pump water heating refrigeration mode adopts following connection:
The B end of the first cross valve is connected with D end, A end is connected with C end, and a end of described second cross valve is connected with b end, and c end is connected with d end, second triple valve one end connects the C end of the first cross valve, one end is connected with the 4th heat exchanger, and the 3rd end is closed, and first triple valve one end connects a end of the second cross valve, one end connects the 8th heat exchanger, 3rd end is closed, and constantly obtains heat from the second water tank, brings the first water tank and outdoor.
Compared with existing system, native system have employed water tank and carries out classification energy storage by solar radiation intensity, improves the utilization rate of solar energy.Use heat pump water heating, avoid the electric auxiliary heating using low-energy-efficiency.Solar energy directly utilizes, and does not consume compressor work.Add the ability that heat supply in summer and cooling carry out simultaneously.Operation of heat pump operating mode is relatively stable, and during domestic hot-water, pressure-bearing supplies water, and does not have germy danger also to use the problem of water unstable.Owing to not using electrically heated pattern, under the weather of extreme low temperature, the ability of supplying hot water may have deficiency, if but the mode of system and floor heating mate, the inertia of building and the thermal storage effect of water temperature can be utilized, maintain the demand of hot water and heating.
Accompanying drawing explanation
Fig. 1 is the first embodiment schematic diagram of solar water heating system of the present invention;
Fig. 2 is the second embodiment schematic diagram of solar water heating system of the present invention;
Fig. 3 is the third embodiment schematic diagram of solar water heating system of the present invention;
Fig. 4 is solar heat pump heating refrigeration system schematic diagram of the present invention;
Fig. 5 is solar heating season hot water cyclesystem schematic diagram (when radiation is strong) of the present invention;
Fig. 6 is solar heating season of the present invention hot water cyclesystem schematic diagram when strong (radiation general);
Fig. 7 is the system schematic of solar energy non-heating season hot water cyclesystem of the present invention;
Fig. 8 is the system schematic of air source heat pump hot water system of the present invention;
Fig. 9 is the system schematic of cooling cycle system of the present invention.
In figure, first-class to adjusting device 1, second to adjusting device 2, solar thermal collector 3, water circulating pump 4, second triple valve 5, second cross valve 6, choke valve 7, the 8th heat exchanger 8, compressor 9, the 3rd heat exchanger 10, First Heat Exchanger 11, the 5th heat exchanger 12, the 4th heat exchanger 13, second heat exchanger 14, the 6th heat exchanger 15, second water tank 16, first water tank 17, first cross valve 18, first triple valve 19, three-tank 20 and the 7th heat exchanger 21.
Detailed description of the invention
Below in conjunction with accompanying drawing, structure of the present invention and the method for operation are described further.It should be noted that, following various concrete preferred embodiment is not having, in conflicting situation, all can mutually combine.In Figure of description, under the dotted line in Fig. 4 ~ 9 represents this pattern, the pipeline of liquid actual circulation.
The present invention proposes a kind of solar water heating system and heat pump heats refrigeration system and method thereof, solar energy utilization technique and air source heat pump technology are organically combined, ensure heating, under the requirement of domestic hot-water and summer cooling, improve the utilization rate of solar energy, improve the Energy Efficiency Ratio of whole heating.
A kind of solar water heating system, as shown in Figure 1, comprises first-class to adjusting device 1, second to adjusting device 2, solar thermal collector 3, water circulating pump 4, First Heat Exchanger 11, first water tank 17 and the second water tank 16; First Heat Exchanger 11 is arranged in the first water tank 17; The delivery port of solar thermal collector 3 connects the first-class entrance to adjusting device 1; First-class outlet one tunnel to adjusting device 1 is connected with the entrance of First Heat Exchanger 11, and another road is connected with the outlet of First Heat Exchanger 11, and second is connected to the entrance of adjusting device 2 with the outlet of First Heat Exchanger 11; Second is connected to outlet one tunnel of adjusting device 2 with the second water tank 16 entrance, and another road exports with the second water tank 16 and is connected, and the outlet of the second water tank 16 is connected with solar thermal collector 3; Water circulating pump 4 is for providing power for solar water heating system; First-class to adjusting device 1, second to adjusting device 2 for change outlet circulating fluid to.First-class can adopt triple valve to adjusting device 1, second to adjusting device 2 or the modes such as by-pass valve control are installed respectively on pipeline realize, as long as the pipeline of its valve export circulating fluid warp can be controlled.Adopt this system can make solar water by solar radiation strength grading heat energy storage to different water tanks, improve solar energy utilization ratio.。
In order to be separated the medium of solar energy circulation fluid and the second water tank 16, the second heat exchanger 14 is also comprised in system, second heat exchanger 14 is arranged in the second water tank 16, the road that second is connected with the second water tank 16 entrance in the outlet of adjusting device 2 extends and is connected with the entrance of the second heat exchanger 14, second exports with the second water tank 16 road be connected and extends and be connected with the outlet of the second heat exchanger 14 in the outlet of adjusting device 2, concrete visible Fig. 2.
Multistage water tank of the present invention can arrange multiple as required.When arranging tertiary effluent case, as shown in Figure 3, also comprise three-tank 20 and the 7th heat exchanger 21 in system, the 7th heat exchanger 21 is arranged in three-tank 20,7th heat exchanger 21 import is connected with first-class the 3rd way outlet to adjusting device 1, exports and is connected with the entrance of First Heat Exchanger 11.Compared with existing solar energy heat distribution system, present invention employs multistage water tank and carry out classification energy storage by solar radiation intensity, water that can be different to temperature in different water tank as required carries out distribution and uses, and improves the utilization rate of solar energy.
Present invention also offers a kind of solar heat pump heating refrigeration system, comprise above-mentioned solar water heating system, also comprise air source heat pump hot water system, usually a heat exchanger is all included (herein in order to distinguish in air source heat pump hot water system, be called the 8th heat exchanger 8), 8th heat exchanger 8 can be used as wind-cooled evaporator and condenser simultaneously: heating circulation time, the 8th heat exchanger 8 obtains energy warms first water tank 17 as evaporimeter from air; When the 8th heat exchanger 8 frosting, the 8th heat exchanger 8, as condenser, obtains energy from the second water tank 16 and defrosts.
Simultaneously as improving further, when system carrying out heating and freezing, obtaining heat from the second water tank 16 and to heat to the first water tank 17 and by the 8th heat exchanger 8 to air heat release.
The hot-water heating system of aforesaid three kinds of embodiments operationally, can coordinate air source heat pump hot water system to use.Air source heat pump hot water system can adopt various structures of the prior art, as long as inner containing the 8th described heat exchanger.But consider result of use, the invention provides a kind of air source heat pump hot water system connected mode (as shown in Figures 1 to 3) that can realize above-mentioned design function, be specially: the air source heat pump circulatory system comprises compressor 9, first cross valve 18, first triple valve the 19, three heat exchanger 10, second cross valve 6, choke valve 7, the 4th heat exchanger 13 and the second triple valve 5, the 3rd described heat exchanger 10 and the 4th heat exchanger 13 are arranged in the first water tank 17 and the second water tank 16 respectively, the 3rd described heat exchanger 10 one end is held with the D of the first cross valve 18 and is connected, the other end is held with the b of the second cross valve 6 and is connected, 4th heat exchanger 13 one end is held with the c of the second cross valve 6 and is connected, the other end is connected with one end of the second triple valve 5, second cross valve 6 d end successively with choke valve 7, one end of 8th heat exchanger 8 and the first triple valve 19 is connected, second end of the first triple valve 19 is held with the C of the first cross valve 18 and is connected, 3rd end of the first triple valve 19 is held with a of the second cross valve 6 and is connected, second end of the second triple valve 5 is held with the D of the first cross valve 18 and is connected, 3rd end of the second triple valve 5 is held with the C of the first cross valve 18 and is connected, the entrance and exit of compressor 9 is connected with the side a and b of the first cross valve 18 respectively.
First water tank 17, second water tank 16 constitutes a set of multifunction storage boiler.In heating season, the first water tank 17 stores high-temperature-hot-water, and the second water tank 16 stores low-temperature water heating; At transition season, the first water tank 17 stores high-temperature-hot-water; In summer air-conditioning season, the first water tank 17 stores high-temperature-hot-water, and the second water tank 16 stores cold water, realizes the efficiency utilization of solar energy thus.
Based on above-mentioned solar heat pump heating refrigeration system, present invention also offers a kind of solar heat pump heating refrigerating method using this system, different running method can be taked according to Various Seasonal, specific as follows:
Winter heating's water warm pattern: when there being solar radiation, water circulating pump starts, and enters solar heating season hot water cyclesystem operational mode; If when the first water tank 17 water temperature does not reach design temperature, start heat-pump hot-water circulatory system operational mode, when the 8th heat exchanger 8 needs defrosting, heat pump enters cooling cycle system operational mode;
Transition season list water heating pattern: when there being solar radiation, water circulating pump starts, and enters solar energy non-heating season hot water cyclesystem operational mode, if the first water tank 17 water temperature does not reach design temperature, starts heat-pump hot-water circulatory system operational mode;
Summer water heating and air conditioning mode: when there being solar radiation, water circulating pump starts, enter solar energy non-heating season hot water cyclesystem operational mode, if the first water tank 17 water temperature does not reach design temperature, start heat pump water heating refrigeration mode, if water temperature reaches design temperature, then start cooling cycle system operational mode.
Above-mentioned various operational modes can be realized by each valve in transformation system, specific as follows:
Described solar heating season hot water cyclesystem operational mode adopts following connection:
As shown in Figure 5, when temperature more than the first water tank 17 of the outlet temperature of solar thermal collector 3, the entrance of First Heat Exchanger 11 is pointed in the first-class outlet to adjusting device 1, another port closing, second points to the entrance of the second heat exchanger 14 to the outlet of adjusting device 2, another port closing, realizes solar energy successively to the function of the first water tank 17, second water tank 16 heating; As shown in Figure 6, when the outlet temperature of solar thermal collector 3 more than the temperature of the second water tank 16 and temperature lower than the first water tank 17 time, the outlet of First Heat Exchanger 11 is pointed in the first-class outlet to adjusting device 1, another port closing, second points to the entrance of the second heat exchanger 14 to the outlet of adjusting device 2, another port closing, realizes solar energy only to the function that the second water tank 16 heats;
Described solar energy non-heating season hot water cyclesystem operational mode adopts following connection:
As shown in Figure 7, the entrance of First Heat Exchanger 11 is pointed in the first-class outlet to adjusting device 1, another port closing, and second points to the outlet of the second heat exchanger 14 to the outlet of adjusting device 2, and another port closing, realizes only heating to the first water tank 17;
Described heat-pump hot-water circulatory system operational mode adopts following connection:
As shown in Figure 8, the A end of the first cross valve 18 is connected with C end, B end is connected with D end, the a end of the second cross valve 6 is connected with c end, b end and d end is connected, the second triple valve 5 connect the first cross valve 18 D hold and the 4th heat exchanger 13, first triple valve 19 connect the first cross valve 18 C hold and the 8th heat exchanger 8, the other end is closed, and realizes air source heat pump system and heats to the first water tank 17;
Described cooling cycle system operational mode adopts following connection:
As shown in Figure 9, the B end of the first cross valve 18 is connected with C end, A with D is connected, the a end of the second cross valve 6 is connected with b end, and c end is connected with d end, and the D mouth that the second triple valve 5 connects the first cross valve 18 connects, second triple valve 5 connects D end and the 4th heat exchanger 13 of the first cross valve 18, first triple valve 19 connects C end and the 8th heat exchanger 8 of the first cross valve 18, and the other end is closed, and realizes cooling second water tank 16;
Described heat pump water heating refrigeration mode adopts following connection:
As shown in Figure 4, the B end of the first cross valve 18 is connected with D end, and A end is connected with C end, the a end of described second cross valve 6 is connected with b end, c end is connected with d end, and second triple valve 5 one end connects the C end of the first cross valve 18, and one end is connected with the 4th heat exchanger 13,3rd end is closed, first triple valve 19 one end connects a end of the second cross valve 6, and one end connects the 8th heat exchanger the 8, three end and closes, constantly obtain heat from the second water tank 16, bring the first water tank 17 and outdoor heating.
A heat exchanger (the 5th heat exchanger 12 namely in Fig. 1 and the 6th heat exchanger 15) can be placed respectively, for providing the heat exchange of domestic hot-water in first water tank 17 and the second water tank 16.
The multifunctional solar heat pump system of the present invention's design and method thereof, make full use of the regenerative resource such as solar energy and air heat energy, realize summer cooling supplying hot water, heat supply in winter supplying hot water.The defrosting of Heating Season wind-cooled evaporator realizes by the low-grade solar energy stored, and avoids the fluctuation of boiler water temperature.The mode that the acquisition of domestic hot-water uses heat exchanger progressively to heat, obtains, is pressure-bearing running water, avoids the problem of bacteria breed and pressure transient from the water tank stored.When sun in summer can be not enough to produce domestic hot-water, the mode of the water-cooled condenser of air-conditioning system and air-cooled condenser series connection, obtains hot water while realizing chilled water.According to solar radiation intensity, solar energy hierarchical is stored, improve the utilization rate of solar energy, reduce the power consumption of heat pump.Technology is especially applicable to hot-summer and cold-winter area, adopts the building of radiation cooling and floor heating.

Claims (8)

1. a solar water heating system, it is characterized in that, comprise first-class to adjusting device (1), second to adjusting device (2), solar thermal collector (3), water circulating pump (4), First Heat Exchanger (11), the first water tank (17) and the second water tank (16); First Heat Exchanger (11) is arranged in the first water tank (17); The delivery port of solar thermal collector (3) connects the first-class entrance to adjusting device (1); First-class outlet one tunnel to adjusting device (1) is connected with the entrance of First Heat Exchanger (11), another road is connected with the outlet of First Heat Exchanger (11), and second is connected to the entrance of adjusting device (2) with the outlet of First Heat Exchanger (11); Second is connected to outlet one tunnel of adjusting device (2) with the second water tank (16) entrance, another road exports with the second water tank (16) and is connected, and the outlet of the second water tank (16) is connected with solar thermal collector (3); Water circulating pump (4) is for providing power for solar water heating system; First-class to adjusting device (1), second to adjusting device (2) for change outlet circulating fluid to.
2. solar water heating system as claimed in claim 1, it is characterized in that, also comprise the second heat exchanger (14), second heat exchanger (14) is arranged in the second water tank (16), the road that second is connected with the second water tank (16) entrance in the outlet of adjusting device (2) extends and is connected with the entrance of the second heat exchanger (14), and second exports the road be connected and extends and be connected with the outlet of the second heat exchanger (14) in the outlet of adjusting device (2) with the second water tank (16).
3. solar water heating system as claimed in claim 1, it is characterized in that, also comprise three-tank (20) and the 7th heat exchanger (21), 7th heat exchanger (21) is arranged in three-tank (20), 7th heat exchanger (21) import is connected with first-class the 3rd way outlet to adjusting device (1), and outlet is connected with the entrance of First Heat Exchanger (11).
4. a solar heat pump heating refrigeration system, it is characterized in that: comprise the solar water heating system as described in claim arbitrary in claim 1-3, also comprise air source heat pump hot water system, air source heat pump hot water system comprises the 8th heat exchanger (8), heating circulation time, the 8th heat exchanger (8) obtains energy warms first water tank (17) as evaporimeter from air; When the 8th heat exchanger (8) frosting, the 8th heat exchanger (8), as condenser, obtains energy from the second water tank (16) and defrosts.
5. solar heat pump heating refrigeration system as claimed in claim 4, it is characterized in that, when system carries out heating and freezing, obtain heat from the second water tank (16) and heat to the first water tank (17) and pass through the 8th heat exchanger (8) to air heat release.
6. solar heat pump heating refrigeration system as claimed in claim 4, it is characterized in that, the described air source heat pump circulatory system comprises compressor (9), first cross valve (18), first triple valve (19), 3rd heat exchanger (10), second cross valve (6), choke valve (7), 4th heat exchanger (13) and the second triple valve (5), the 3rd described heat exchanger (10) and the 4th heat exchanger (13) are arranged in the first water tank (17) and the second water tank (16) respectively, the 3rd described heat exchanger (10) one end is held with the D of the first cross valve (18) and is connected, the other end is held with the b of the second cross valve (6) and is connected, 4th heat exchanger (13) one end is held with the c of the second cross valve (6) and is connected, the other end is connected with the one end of the second triple valve (5), second cross valve (6) d end successively with choke valve (7), one end of 8th heat exchanger (8) and the first triple valve (19) is connected, second end of the first triple valve (19) is held with the C of the first cross valve (18) and is connected, 3rd end of the first triple valve (19) is held with a of the second cross valve (6) and is connected, second end of the second triple valve (5) is held with the D of the first cross valve (18) and is connected, 3rd end of the second triple valve (5) is held with the C of the first cross valve (18) and is connected, the entrance and exit of compressor (9) is connected with the side a and b of the first cross valve (18) respectively.
7. use a solar heat pump heating refrigerating method for system described in claim 6, it is characterized in that, take different running method according to Various Seasonal, specific as follows:
Winter heating's water warm pattern: when there being solar radiation, water circulating pump starts, and enters solar heating season hot water cyclesystem operational mode; If when the first water tank (17) water temperature does not reach design temperature, start heat-pump hot-water circulatory system operational mode, when the 8th heat exchanger (8) needs defrosting, heat pump enters cooling cycle system operational mode;
Transition season list water heating pattern: when there being solar radiation, water circulating pump starts, enter solar energy non-heating season hot water cyclesystem operational mode, if the first water tank (17) water temperature does not reach design temperature, start heat-pump hot-water circulatory system operational mode;
Summer water heating and air conditioning mode: when there being solar radiation, water circulating pump starts, enter solar energy non-heating season hot water cyclesystem operational mode, if the first water tank (17) water temperature does not reach design temperature, start heat pump water heating refrigeration mode, if water temperature reaches design temperature, then start cooling cycle system operational mode.
8. solar heat pump heating refrigerating method as claimed in claim 7, is characterized in that, described solar heating season hot water cyclesystem operational mode adopts following connection:
When temperature more than the first water tank (17) of the outlet temperature of solar thermal collector (3), the entrance of First Heat Exchanger (11) is pointed in the first-class outlet to adjusting device (1), another port closing, second points to the entrance of the second heat exchanger (14) to the outlet of adjusting device (2), another port closing, realizes solar energy successively to the function that the first water tank (17), the second water tank (16) heat; When the outlet temperature of solar thermal collector (3) more than the temperature of the second water tank (16) and temperature lower than the first water tank (17) time, the outlet of First Heat Exchanger (11) is pointed in the first-class outlet to adjusting device (1), another port closing, second points to the entrance of the second heat exchanger (14) to the outlet of adjusting device (2), another port closing, realizes solar energy only to the function that the second water tank (16) heats;
Described solar energy non-heating season hot water cyclesystem operational mode adopts following connection:
The entrance of First Heat Exchanger (11) is pointed in the first-class outlet to adjusting device (1), another port closing, second points to the outlet of the second heat exchanger (14) to the outlet of adjusting device (2), another port closing, realizes only to the first water tank (17) heating;
Described heat-pump hot-water circulatory system operational mode adopts following connection:
The A end of the first cross valve (18) is connected with C end, B end is connected with D end, the a end of the second cross valve (6) is connected with c end, b end is connected with d end, second triple valve (5) connects D end and the 4th heat exchanger (13) of the first cross valve (18), first triple valve (19) connects C end and the 8th heat exchanger (8) of the first cross valve (18), the other end is closed, and realizes air source heat pump system to the first water tank (17) heating;
Described cooling cycle system operational mode adopts following connection:
The B end of the first cross valve (18) is connected with C end, A with D is connected, the a end of the second cross valve (6) is connected with b end, c end is connected with d end, the D mouth that second triple valve (5) connects the first cross valve (18) connects, second triple valve (5) connects D end and the 4th heat exchanger (13) of the first cross valve (18), first triple valve (19) connects C end and the 8th heat exchanger (8) of the first cross valve (18), the other end is closed, and realizes cooling second water tank (16);
Described heat pump water heating refrigeration mode adopts following connection:
The B end of the first cross valve (18) is connected with D end, A end is connected with C end, the a end of described second cross valve (6) is connected with b end, c end is connected with d end, second triple valve (5) one end connects the C end of the first cross valve (18), one end is connected with the 4th heat exchanger (13), 3rd end is closed, first triple valve (19) one end connects a end of the second cross valve (6), one end connects the 8th heat exchanger (8), 3rd end is closed, and constantly obtains heat from the second water tank (16), brings the first water tank (17) and outdoor.
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CN113945014A (en) * 2021-11-12 2022-01-18 湖南大学 Energy supply system with solar heat collector and heat pump coupled and control method

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