CN214468877U - Cross-season phase change heat storage and energy supply system based on solar energy and heat pump - Google Patents
Cross-season phase change heat storage and energy supply system based on solar energy and heat pump Download PDFInfo
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- CN214468877U CN214468877U CN202120554979.2U CN202120554979U CN214468877U CN 214468877 U CN214468877 U CN 214468877U CN 202120554979 U CN202120554979 U CN 202120554979U CN 214468877 U CN214468877 U CN 214468877U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/20—Solar thermal
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
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Abstract
The utility model discloses a cross-season phase change heat storage and energy supply system based on solar energy and a heat pump, which comprises a solar heat collector, a first water pump, a heat preservation water tank, a heat pump, a third water pump, a phase change heat storage structure, a floor heating device, a cross-season heat storage device and an on-off valve; the heat pump comprises a second water pump, an expansion valve, an evaporator, a condenser and a compressor. The utility model discloses a heating mode of solar energy, phase change heat accumulation, cross season heat accumulation and heat pump looks coupling to in the face of different weather conditions. The heat is stored in the soil across seasons, so that the problem of excessive solar heat in summer is solved, and the solar energy is effectively utilized in non-heating seasons. The solar heat pump is coupled with the heat pump, so that the problem of insufficient solar heat in continuous cloudy days is solved. The phase change heat storage material is laid under the floor heater, so that the solar heat which is too much in sunny days can be stored, the equipment can be turned off at night, and the phase change heat storage material is used for radiation heat dissipation, so that the purpose of energy conservation is achieved.
Description
Technical Field
The utility model relates to a solar heating field specifically is a stride phase transition heat-retaining energy supply system in season based on solar energy and heat pump.
Background
The solar heating technology responds to the national call for energy conservation, emission reduction and beautiful China construction, and has wide application prospect. Particularly, in rural areas, the personnel density is low, and the centralized heating is not economical, so that the distributed heating by one household is more practical. The solar heating technology is different from the traditional boiler heating mode, wastes energy and pollutes the environment, and the solar heating technology utilizes clean energy, which is solar energy, and accords with the national concept of energy conservation and emission reduction. However, the intensity of solar radiation is incidental, and the stability of heating cannot be guaranteed by using solar energy alone for heating. The document of application No. 201810338532.4 discloses a solar assisted ground source heat pump system that introduces a ground source heat pump heating system using solar energy as an auxiliary heat source, but this system does not allow for the full utilization of solar energy in summer.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is to provide a cross-season phase change heat storage energy supply system based on solar energy and heat pump.
The technical scheme of the utility model for solving the technical problems is to provide a cross-season phase change heat storage and energy supply system based on solar energy and heat pump, which is characterized in that the energy supply system comprises a solar heat collector, a first water pump, a heat preservation water tank, a heat pump, a third water pump, a phase change heat storage structure, a floor heating device, a cross-season heat storage device and an on-off valve;
the heat pump comprises a water pump II, an expansion valve, an evaporator, a condenser and a compressor; the refrigerant inlet of the evaporator is connected with the refrigerant outlet of the condenser through a pipeline, and an expansion valve is arranged on the pipeline; the refrigerant outlet of the evaporator is connected with the refrigerant inlet of the condenser through a pipeline, and a compressor is arranged on the pipeline;
a first water pump is arranged on an outlet pipeline of the solar thermal collector, the tail end of the pipeline is divided into two primary branches, a first on-off valve is arranged on one primary branch, the tail end of the first on-off valve is connected with a first water inlet of the thermal insulation water tank, a fourth on-off valve is arranged on the other primary branch, the tail end of the second on-off valve is divided into three secondary branches, the first secondary branch is connected with a water inlet of the evaporator, a fifth on-off valve is arranged on the second secondary branch, the tail end of the second on-off valve is connected with a water inlet of the seasonal heat storage device, and a tenth on-off valve is arranged on the third secondary branch; a water outlet pipeline of the condenser is provided with a on-off valve six; an on-off valve eighth is arranged on a second water outlet pipeline of the heat preservation water tank; the tail end of a second-stage branch provided with an on-off valve ten, the tail end of a second water outlet pipeline of the heat preservation water tank and the tail end of a water outlet pipeline of the condenser are combined into a pipeline, a third water pump is arranged on the pipeline, the tail end of the pipeline is divided into two branches, one branch is provided with an on-off valve nine, the tail end of the branch is connected with a water inlet of the phase change heat storage structure, and the other branch is connected with a water inlet of the floor heating system;
a second on-off valve is arranged on a first water outlet pipeline of the heat preservation water tank; the tail end of a water outlet pipeline of the phase change heat storage structure and the tail end of a water outlet pipeline of the floor heating are combined into a pipeline, the tail end of the pipeline is divided into three branches, a seventh on-off valve is arranged on the first branch, the tail end of the seventh on-off valve is connected with a water inlet of the condenser, a eleventh on-off valve is arranged on the second branch, a twelfth on-off valve is arranged on the third branch, and the tail end of the twelfth on-off valve is connected with a second water inlet of the heat preservation water tank; the tail end of a branch with an on-off valve eleven and the tail end of a water outlet pipeline of the cross-season heat storage device are combined into a pipeline, an on-off valve thirteen is arranged on the pipeline, the tail end of the pipeline and the tail end of a first water outlet pipeline of the heat preservation water tank are combined into a pipeline, and the tail end of the pipeline is connected with an inlet of the solar heat collector;
the heat preservation water tank is provided with a third water inlet and a third water outlet; the third water inlet is externally connected with tap water of a municipal water supply network, and the third water outlet is used for supplying hot water for life of users.
Compared with the prior art, the utility model discloses beneficial effect lies in:
(1) the utility model discloses a heating mode of solar energy, phase change heat accumulation, cross season heat accumulation and heat pump looks coupling to in the face of different weather conditions. The heat is stored in the soil across seasons, so that the problem of excessive solar heat in summer is solved, and the solar energy is effectively utilized in non-heating seasons. The solar heat pump is coupled with the heat pump, so that the problem of insufficient solar heat in continuous cloudy days is solved. The phase change heat storage material is laid under the floor heater, so that the solar heat which is too much in sunny days can be stored, the equipment can be turned off at night, and the phase change heat storage material is used for radiation heat dissipation, so that the purpose of energy conservation is achieved.
(2) The utility model discloses when solar radiation intensity is big, directly heat for the heat accumulation material heat accumulation simultaneously with solar collector, turn off equipment evening, heat supply is released by the heat accumulation material. When the solar radiation intensity is not large, the heat pump is started to supplement, and meanwhile, the solar heat collector is used for exchanging heat for the evaporator, so that the efficiency of the heat pump is improved. When no solar radiation exists, the heat pump is started to supply heat, and the heat stored in the soil in summer can be used. Therefore, solar energy can be utilized to the maximum extent, uninterrupted heat supply in winter is guaranteed, and meanwhile, the efficiency of the heat pump is improved.
Drawings
Fig. 1 is a schematic structural diagram of a solar-heat pump-season-crossing and phase-change heat storage combined system of the present invention.
In the figure: 1. a solar heat collector; 2. a first Y-shaped filter; 3. a first water pump; 4. a first on-off valve; 5. a second on-off valve; 6. a third on-off valve; 7. a fourth on-off valve; 8. a fifth on-off valve; 9. a sixth on-off valve; 10. a seventh on-off valve; 11. an on-off valve eighth; 12. a ninth on-off valve; 13. a heat preservation water tank; 14. a heat pump; 15. a second Y-shaped filter; 16. a second water pump; 17. an expansion valve; 18. an evaporator; 19. a condenser; 20. a compressor; 21. a third Y-shaped filter; 22. a third water pump; 23. a phase change thermal storage structure; 24. floor heating; 25. a cross-season heat storage device; 26. a switch valve ten; 27. an on-off valve eleven; 28. a on-off valve twelve; 29. and thirteen on-off valves.
Detailed Description
Specific embodiments of the present invention are given below. The specific embodiments are only used for further elaboration of the invention, and do not limit the scope of protection of the claims of the present application.
The utility model provides a cross-season phase change heat storage energy supply system (energy supply system for short) based on solar energy and heat pump, which is characterized in that the energy supply system comprises a solar heat collector 1, a first water pump 3, a heat preservation water tank 13, a heat pump 14, a third water pump 22, a phase change heat storage structure 23, a floor heating system 24, a cross-season heat storage device 25 and an on-off valve;
the heat pump 14 comprises a second water pump 16, an expansion valve 17, an evaporator 18, a condenser 19 and a compressor 20; a refrigerant inlet of the evaporator 18 is connected with a refrigerant outlet of the condenser 19 through a pipeline, and an expansion valve 17 is arranged on the pipeline; the refrigerant outlet of the evaporator 18 is connected with the refrigerant inlet of the condenser 19 through a pipeline, and a compressor 20 is arranged on the pipeline;
a phase change heat storage structure 23 is laid below the floor heater 24, and a heat insulation material is integrally arranged on the outer side of the phase change heat storage structure 23;
a first water pump 3 is arranged on an outlet pipeline of the solar heat collector 1, the tail end of the pipeline is divided into two primary branches, a first on-off valve 4 is arranged on one primary branch, the tail end of the first on-off valve is connected with a first water inlet of the heat-preservation water tank 13, a fourth on-off valve 7 is arranged on the other primary branch, the tail end of the second on-off valve is divided into three secondary branches, the first secondary branch is connected with a water inlet of the evaporator 18, a fifth on-off valve 8 is arranged on the second secondary branch, the tail end of the second on-off valve is connected with a water inlet of the season-crossing heat storage device 25, and a tenth on-off valve 26 is arranged on the third secondary branch; a water outlet pipeline of the condenser 19 is provided with a on-off valve six 9; an on-off valve eighth 11 is arranged on a second water outlet pipeline of the heat preservation water tank 13; the tail end of a secondary branch provided with an on-off valve ten 26, the tail end of a second water outlet pipeline of the heat preservation water tank 13 and the tail end of a water outlet pipeline of the condenser 19 are combined into a pipeline, a water pump three 22 is arranged on the pipeline, the tail end of the pipeline is divided into two branches, an on-off valve nine 12 is arranged on one branch, the tail end of the branch is connected with a water inlet of the phase change heat storage structure 23, and the other branch is connected with a water inlet of the floor heating system 24;
a second on-off valve 5 is arranged on a first water outlet pipeline of the heat preservation water tank 13; the tail end of a water outlet pipeline of the phase-change heat storage structure 23 and the tail end of a water outlet pipeline of the floor heating 24 are combined into a pipeline, the tail end of the pipeline is divided into three branches, an on-off valve seventh 10 is arranged on the first branch, the tail end of the first branch is connected with a water inlet of the condenser 19, an on-off valve eleventh 27 is arranged on the second branch, an on-off valve twelfth 28 is arranged on the third branch, and the tail end of the third branch is connected with a second water inlet of the heat preservation water tank 13; the tail end of the branch with the on-off valve eleven 27 and the tail end of the water outlet pipeline of the cross-season heat storage device 25 are combined into a pipeline, an on-off valve thirteen 29 is arranged on the pipeline, the tail end of the pipeline and the tail end of the first water outlet pipeline of the heat preservation water tank 13 are combined into a pipeline, and the tail end of the pipeline is connected with the inlet of the solar heat collector 1.
The heat preservation water tank 13 is provided with a third water inlet and a third water outlet; the third water inlet is externally connected with tap water of a municipal water supply network, and the third water outlet is used for supplying hot water for life of users.
Preferably, the cross-season heat storage device 25 comprises a housing, an underground heat storage coil heat exchanger, a heat storage material and a thermal insulation material; the heat insulation material is integrally wrapped outside the shell, the heat storage coil heat exchanger is buried in the shell, and the heat storage material is arranged in the gap of the heat storage coil heat exchanger. The buried heat storage coil heat exchanger is a hankewei brand plate heat exchanger, and the model is 300-60 layers of stainless steel plates. The heat storage material is sand, soil or rock-soil mass and the like.
Preferably, the heat insulation material on the outer side of the phase change heat storage structure 23 and the heat insulation material of the cross-season heat storage device 25 are both made of heat insulation cotton.
Preferably, according to the fluid flow direction, all be provided with Y type filter before the water pump for filter fluid prevents that the water pump from blockking up the damage, specifically: the Y-shaped filter I2 is arranged in front of the water pump I3, the Y-shaped filter II 15 is arranged in front of the water pump II 16, and the Y-shaped filter III 21 is arranged in front of the water pump III 22.
Preferably, the phase change heat storage structure 23 is filled with a low-temperature phase change material; the low-temperature phase-change material is prepared by selecting paraffin or a paraffin-based solid-solid phase-change energy storage material, wherein the material is prepared by physical adsorption, using the paraffin as a matrix phase-change material and using activated carbon as an adsorption material through mechanical stirring and blending, and when the content of the activated carbon is more than 15%, the paraffin can ensure good mechanical strength in the phase-change process.
Preferably, a water level detection device is arranged in the heat preservation water tank 13; the water level detection device adopts a WAAAX type liquid level sensor.
Preferably, the first on-off valve 4, the second on-off valve 5, the third on-off valve 6, the fourth on-off valve 7, the fifth on-off valve 8, the sixth on-off valve 9, the seventh on-off valve 10, the eighth on-off valve 11, the ninth on-off valve 12, the tenth on-off valve 26, the eleventh on-off valve 27, the twelfth on-off valve 28 and the thirteenth on-off valve 29 are all water valves of YueEr 08-50 series.
Preferably, the first water pump 3, the second water pump 16 and the third water pump 22 adopt a Merlent 1WZB-15Z type water pump.
Preferably, the solar heat collector 1 is a plate type heat collector.
Preferably, the heat pump 14 is a haar air-conditioning cloud heating series RF100RXSAVC (G) -B type air source heat pump.
Preferably, the solar collector 1, the holding water tank 13 and the heat pump 14 are placed on a roof, and the cross-season heat storage device 25 is located underground.
The utility model discloses a work flow is:
(one) summer mode: in summer, the sunlight is sufficient, the on-off valve IV 7, the on-off valve V8, the on-off valve I4, the on-off valve II 5, the on-off valve III 6 and the on-off valve III 29 are opened, and the water pump I3 is started, so that on one hand, hot water in the solar heat collector 1 reaches the heat-preservation water tank 13 through the Y-shaped filter I2, the water pump I3 and the on-off valve I4 to provide hot water for daily life, and then flows through the on-off valve II 5 to return to the solar heat collector 1; on the other hand, hot water in the solar thermal collector 1 reaches the cross-season heat storage device 25 through the Y-shaped filter I2, the water pump I3, the on-off valve IV 7 and the on-off valve V8 to be stored as cross-season heat, is taken in winter, and then flows through the on-off valve thirteen 29 to return to the solar thermal collector 1.
(II) winter mode:
in the first mode, when sunlight is sufficient in the daytime, the water temperature in the solar heat collector 1 is higher, namely the water temperature in the heat-preservation water tank 13 is higher than a set value (50 ℃ in the embodiment) of the inlet temperature of the floor heating system 24; at the moment, the first water pump 3 and the third water pump 22 are started, and the first on-off valve 4, the second on-off valve 5, the third on-off valve 6, the eighth on-off valve 11 and the twelfth on-off valve 28 are opened; hot water in the solar heat collector 1 reaches the heat preservation water tank 13 through the Y-shaped filter I2, the water pump I3 and the on-off valve I4; tap water is connected into the heat-preservation water tank 13 through the on-off valve III 6 to cool hot water in the heat-preservation water tank 13, so that the temperature in the heat-preservation water tank 13 is equal to the set value 50 ℃ of the temperature of the inlet of the floor heating 24, hot water is provided for daily life, and at the moment, water in the heat-preservation water tank 13 reaches the floor heating 24 through the on-off valve eighth 11, the Y-shaped filter III 21 and the water pump III 22 to heat rooms; then returns to the heat preservation water tank 13 through an on-off valve twelve 28; if the quantity of water in the heat-preservation water tank 13 is large, the on-off valve nine 12 can be opened to store heat in the phase change heat storage material layer 23;
all water pumps and all on-off valves can be turned off at night, and the phase change heat storage material layer 23 is used for carrying out radiation heating on the room; if the indoor temperature still does not meet the requirement at the moment, the heat pump 14 is started; the compressor 20 and the water pump III 22 are started, and the on-off valve VI 9 and the on-off valve VII 10 are opened; the refrigerant is compressed, releases heat in the condenser 19, passes through the expansion valve 17, absorbs heat in the evaporator 18, and repeats; hot water in the condenser 19 reaches a floor heating 24 through a stop valve six 9, a Y-shaped filter three 21 and a water pump three 22 to heat a room; the return water returns to the condenser 19 through the on-off valve seven 10, and the circulation is completed.
In the second mode, when sunlight is insufficient in the daytime, the water temperature in the solar heat collector 1 is not high, namely the water temperature in the heat-preservation water tank 13 is lower than the set value of the temperature of the inlet of the floor heating system 24; at the moment, the first water pump 3, the second water pump 16 and the third water pump 22 are started, and the fourth on-off valve 7, the thirteenth on-off valve 29, the sixth on-off valve 9 and the seventh on-off valve 10 are opened; closing the first on-off valve 4 and the second on-off valve 5; hot water in the solar heat collector 1 enters the evaporator 18 through the Y-shaped filter I2, the water pump I3 and the on-off valve IV 7, and then returns to the solar heat collector 1 through the Y-shaped filter II 15, the water pump II 16 and the on-off valve III 29, so that the hot water in the solar heat collector 1 provides a low-grade heat source for the evaporator 18; the compressor 20 is started, the refrigerant is compressed, releases heat in the condenser 19, passes through the expansion valve 17, absorbs heat in the evaporator 18, and the process is repeated; hot water in the condenser 19 reaches a floor heating 24 through the stop valve six 9, the Y-shaped filter three 21 and the water pump three 22 to heat a room, and return water returns to the condenser 19 through the stop valve seven 10 to complete circulation.
In a third mode, when no sunshine exists in the daytime, the solar heat collector 1 cannot play a role, and the temperature in the heat-preservation water tank 13 cannot meet the set value of the temperature at the inlet of the floor heating system 24;
(1) when the hot water temperature of the cross-season heat storage device 25 can meet the set value of the inlet temperature of the floor heating 24, the third water pump 22 is started, the fifth on-off valve 8, the tenth on-off valve 26 and the eleventh on-off valve 27 are opened; the heat stored in the cross-season heat storage device 25 in summer enters the floor heating 24 along with hot water through the on-off valve five 8, the on-off valve ten 26, the Y-shaped filter three 21 and the water pump three 22; the return water returns to the season-crossing heat storage device 25 through the first cut-off valve 27;
(2) with the continuous utilization of heat in the cross-season heat storage device 25, when the hot water temperature of the cross-season heat storage device 25 cannot meet the inlet temperature set value of the floor heating 24, the second water pump 16 and the third water pump 22 are started, and the fifth on-off valve 8, the sixth on-off valve 9 and the seventh on-off valve 10 are opened; closing the other on-off valves; water in the cross-season heat storage device 25 enters the evaporator 18 through the five cut-off valve 8 to provide a low-grade heat source for the evaporator 18, and then returns to the cross-season heat storage device 25 through the Y-shaped filter II 15 and the water pump II 16; the compressor 20 is started, the refrigerant is compressed, releases heat in the condenser 19, passes through the expansion valve 17, absorbs heat in the evaporator 18, and the process is repeated; hot water in the condenser 19 reaches a floor heating 24 through the stop valve six 9, the Y-shaped filter three 21 and the water pump three 22 to heat a room, and return water returns to the condenser 19 through the stop valve seven 10 to complete circulation.
Example 1
The utility model discloses traditional heat pump heating is compared to energy supply system, and the energy consumption under the same heat output condition is minimum, and possesses the energy-conserving effect that is showing.
Suppose a user heating area of 100m2Heat index of 40W/m2The total heat load is 100 × 40 ═ 4000W, and the total heat quantity is 4000 × 3600 ═ 14400 KWh. Heat pumpThe heating COP is 3, and the heat pump power P is 4000/3W is 1333W.
Assuming that the heating season is 5 months (150 days multiplied by 24 being 3600h), the energy supply system continuously operates, and the total energy consumption of the single heat pump heating season is 4798.8 KWh. If the solar heat collection area is 10m217KWh can be collected in one day, the heat supply season is sunny according to half of the weather, and 1275KWh can be collected in total.
The above example conservatively estimates the heat collection of solar energy, and does not consider the heat of heat accumulation across seasons, if these circumstances are considered, the utility model discloses energy supply system can save more energy.
If 1 degree electricity is calculated according to 0.55 yuan, 4798.8KWh requires 2639.34 yuan, 3523.8KWh requires 1938.09 yuan, and 701.25 yuan can be saved in one heating season. The service life of the devices is 10 years, 7012.5 yuan can be saved in 10 years, the more electricity consumption is, the more cost is, and the more money is saved by the energy supply system of the utility model.
Example 2
The cross-season heat storage device adopts the buried pipe for heat storage, the U-shaped pipe is driven into a vertical shaft below 30m, solar energy is stored in soil and rock through media such as water in the heat storage process, and when heating is carried out in winter, heat of the soil and the rock beside the vertical shaft is exchanged through the media such as water. The ground surface easy to excavate, the larger specific heat capacity of the soil, the higher heat conductivity coefficient of the soil and the permeability coefficient (k) of the underground water are generally selected<10-10m/s)。
The soil (such as clay) with small thermal diffusivity and thermal conductivity has small outward diffusion range of heat, small heat loss, contribution to heat storage and suitability for long-term energy storage; soil structures (such as sandy soil) with high thermal diffusivity and thermal conductivity are good low-temperature heat sources, and the soil structures with high thermal diffusivity and thermal conductivity are good heat dissipation media with high heat dissipation speed. The density of the sand is 1500kg/m3Heat capacity 800J/kg.k, heat storage capacity per cubic sand: 1500 × 0.8 × 30 ═ 36000kJ, the temperature of the sand is reduced from 65 ℃ to 35 ℃,36000Kj 10KWh, if 30m3The sand can store 300KWh of heat.
If the heat pump is used for heating, the heat of the cross-season heat storage device can be used, the temperature of the evaporator is increased, the heating coefficient is increased, the heating efficiency of the heat pump is increased, and electric energy is saved.
The utility model discloses the nothing is mentioned the part and is applicable to prior art.
Claims (10)
1. A cross-season phase change heat storage and energy supply system based on solar energy and a heat pump is characterized by comprising a solar heat collector, a first water pump, a heat preservation water tank, a heat pump, a third water pump, a phase change heat storage structure, a floor heating device, a cross-season heat storage device and an on-off valve;
the heat pump comprises a water pump II, an expansion valve, an evaporator, a condenser and a compressor; the refrigerant inlet of the evaporator is connected with the refrigerant outlet of the condenser through a pipeline, and an expansion valve is arranged on the pipeline; the refrigerant outlet of the evaporator is connected with the refrigerant inlet of the condenser through a pipeline, and a compressor is arranged on the pipeline;
a first water pump is arranged on an outlet pipeline of the solar thermal collector, the tail end of the pipeline is divided into two primary branches, a first on-off valve is arranged on one primary branch, the tail end of the first on-off valve is connected with a first water inlet of the thermal insulation water tank, a fourth on-off valve is arranged on the other primary branch, the tail end of the second on-off valve is divided into three secondary branches, the first secondary branch is connected with a water inlet of the evaporator, a fifth on-off valve is arranged on the second secondary branch, the tail end of the second on-off valve is connected with a water inlet of the seasonal heat storage device, and a tenth on-off valve is arranged on the third secondary branch; a water outlet pipeline of the condenser is provided with a on-off valve six; an on-off valve eighth is arranged on a second water outlet pipeline of the heat preservation water tank; the tail end of a second-stage branch provided with an on-off valve ten, the tail end of a second water outlet pipeline of the heat preservation water tank and the tail end of a water outlet pipeline of the condenser are combined into a pipeline, a third water pump is arranged on the pipeline, the tail end of the pipeline is divided into two branches, one branch is provided with an on-off valve nine, the tail end of the branch is connected with a water inlet of the phase change heat storage structure, and the other branch is connected with a water inlet of the floor heating system;
a second on-off valve is arranged on a first water outlet pipeline of the heat preservation water tank; the tail end of a water outlet pipeline of the phase change heat storage structure and the tail end of a water outlet pipeline of the floor heating are combined into a pipeline, the tail end of the pipeline is divided into three branches, a seventh on-off valve is arranged on the first branch, the tail end of the seventh on-off valve is connected with a water inlet of the condenser, a eleventh on-off valve is arranged on the second branch, a twelfth on-off valve is arranged on the third branch, and the tail end of the twelfth on-off valve is connected with a second water inlet of the heat preservation water tank; the tail end of a branch with an on-off valve eleven and the tail end of a water outlet pipeline of the cross-season heat storage device are combined into a pipeline, an on-off valve thirteen is arranged on the pipeline, the tail end of the pipeline and the tail end of a first water outlet pipeline of the heat preservation water tank are combined into a pipeline, and the tail end of the pipeline is connected with an inlet of the solar heat collector;
the heat preservation water tank is provided with a third water inlet and a third water outlet; the third water inlet is externally connected with tap water of a municipal water supply network, and the third water outlet is used for supplying hot water for life of users.
2. The cross-season phase change heat and energy storage system based on solar energy and heat pumps as claimed in claim 1, wherein a first Y-shaped filter is arranged in front of a first water pump, a second Y-shaped filter is arranged in front of a second water pump, and a third Y-shaped filter is arranged in front of a third water pump according to a fluid flowing direction.
3. The cross-season phase change heat-storage and energy-supply system based on solar energy and heat pumps of claim 1, wherein the cross-season heat storage device comprises a shell, an underground heat storage coil heat exchanger, a heat storage material and a heat preservation material; the outer side of the shell is integrally wrapped with a heat insulation material, a buried heat storage coil heat exchanger is arranged in the shell, and a heat storage material is arranged in the gap of the buried heat storage coil heat exchanger; the heat storage material adopts sand, soil or rock-soil mass; the heat insulation material is heat insulation cotton.
4. The cross-season phase-change heat-storage energy supply system based on solar energy and heat pumps as claimed in claim 1, wherein a phase-change heat storage structure is laid below the floor heater, and heat insulation materials are integrally arranged on the outer side of the phase-change heat storage structure.
5. The cross-season phase-change heat-storage energy supply system based on solar energy and heat pumps as claimed in claim 4, wherein heat insulation cotton is selected as the heat insulation material on the outer side of the phase-change heat storage structure.
6. The cross-season phase change heat-storage energy supply system based on solar energy and heat pumps as claimed in claim 1, wherein the phase change heat storage structure is filled with a low temperature phase change material; the low-temperature phase-change material is paraffin.
7. The cross-season phase-change heat-storage energy supply system based on solar energy and heat pumps as claimed in claim 1, wherein a water level detection device is arranged in the heat preservation water tank.
8. The system of claim 1, wherein the solar collector is a plate collector.
9. The system of claim 1, wherein the heat pump is an air source heat pump.
10. The system of claim 1, wherein the solar collector, holding tank and heat pump are placed on a roof and the cross-season heat storage device is located underground.
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| CN202120554979.2U CN214468877U (en) | 2021-03-18 | 2021-03-18 | Cross-season phase change heat storage and energy supply system based on solar energy and heat pump |
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| CN202120554979.2U CN214468877U (en) | 2021-03-18 | 2021-03-18 | Cross-season phase change heat storage and energy supply system based on solar energy and heat pump |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114811700A (en) * | 2022-04-01 | 2022-07-29 | 湖南科技大学 | Cross-season solar phase change heat storage system and control method thereof |
| CN115046239A (en) * | 2022-05-20 | 2022-09-13 | 湖南大学 | Solar energy stride season sand high temperature heat accumulation building heating system |
-
2021
- 2021-03-18 CN CN202120554979.2U patent/CN214468877U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114811700A (en) * | 2022-04-01 | 2022-07-29 | 湖南科技大学 | Cross-season solar phase change heat storage system and control method thereof |
| CN114811700B (en) * | 2022-04-01 | 2023-11-21 | 湖南科技大学 | Cross-season solar phase-change heat storage system and control method thereof |
| CN115046239A (en) * | 2022-05-20 | 2022-09-13 | 湖南大学 | Solar energy stride season sand high temperature heat accumulation building heating system |
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