CN219318530U - Energy storage system combining PVT (PVT) with heat exchange circulation module - Google Patents
Energy storage system combining PVT (PVT) with heat exchange circulation module Download PDFInfo
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- 238000004146 energy storage Methods 0.000 title claims abstract description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 105
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- 239000003507 refrigerant Substances 0.000 claims description 92
- 239000007788 liquid Substances 0.000 claims description 84
- 238000005338 heat storage Methods 0.000 claims description 35
- 238000004321 preservation Methods 0.000 claims description 19
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 abstract description 15
- 230000007774 longterm Effects 0.000 abstract description 3
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/40—Thermal components
- H02S40/44—Means to utilise heat energy, e.g. hybrid systems producing warm water and electricity at the same time
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D15/00—Other domestic- or space-heating systems
- F24D15/02—Other domestic- or space-heating systems consisting of self-contained heating units, e.g. storage heaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D18/00—Small-scale combined heat and power [CHP] generation systems specially adapted for domestic heating, space heating or domestic hot-water supply
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
- F24D19/1042—Arrangement or mounting of control or safety devices for water heating systems for central heating the system uses solar energy
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
- F25B29/003—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously of the compression type system
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/40—Thermal components
- H02S40/42—Cooling means
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/40—Thermal components
- H02S40/42—Cooling means
- H02S40/425—Cooling means using a gaseous or a liquid coolant, e.g. air flow ventilation, water circulation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2101/00—Electric generators of small-scale CHP systems
- F24D2101/40—Photovoltaic [PV] modules
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Abstract
The utility model discloses an energy storage system combining PVT and a heat exchange circulation module, which comprises a heat collection and exchange module; the photovoltaic cogeneration assembly is communicated with the heat collection and heat exchange module through the first circulating pump and the first communication pipe, so that heat generated by the photovoltaic cogeneration assembly is transmitted and stored into the heat collection and heat exchange module; the heat exchange circulation module is communicated with the heat collection and heat exchange module through a second circulation pump and a second communicating pipe, so that heat stored in the heat collection and heat exchange module can be output to the heat exchange circulation module; the temperature-adjusting heat exchange module is connected in parallel with the heat exchange circulation module and forms heat exchange with the heat exchange circulation module, so that the problem that the quantity of heat generated by the storage and utilization of solar energy of the existing solar water heating system is insufficient is solved, meanwhile, the heat generated by long-term storage of solar energy is realized, and sufficient heat can be effectively ensured to be supplied in rainy days or winter.
Description
Technical Field
The utility model relates to the technical field of new energy, in particular to an energy storage system combining PVT and a heat exchange circulation module.
Background
In the prior art, the solar water heating system is usually adopted for photo-thermal conversion, mainly comprises a flat plate type heat collector, a vacuum tube heat collector, a ceramic solar heat collector and a focusing heat collector, and the existing solar water heating system is still low in conversion efficiency due to the fact that the area for assembling the solar water heating system is limited, particularly the area of a ceiling of a residential building is relatively small, so that the quantity of heat generated by the existing solar water heating system for storing and utilizing the solar energy is insufficient, and further the problem of insufficient heat supply is easily and frequently caused in overcast and rainy days or winter.
Disclosure of Invention
In order to overcome at least one of the defects in the prior art, the utility model provides an energy storage system combining PVT and a heat exchange circulation module, which not only solves the problem of insufficient heat generated by solar energy storage and utilization of the existing solar water heating system, but also realizes long-term heat generated by solar energy storage, and can effectively ensure that sufficient heat can be supplied in overcast and rainy days or winter.
The utility model adopts the technical proposal for solving the problems that:
an energy storage system incorporating PVT in combination with a heat exchange cycle module, comprising:
a heat collection and exchange module with heat storage liquid inside;
the photovoltaic cogeneration assembly is communicated with the heat collection and heat exchange module through a first circulating pump and a first communication pipe, so that heat generated by the photovoltaic cogeneration assembly is transmitted and stored into the heat collection and heat exchange module;
the heat exchange circulation module is communicated with the heat collection and heat exchange module through a second circulation pump and a second communicating pipe, so that heat stored in the heat collection and heat exchange module can be output to the heat exchange circulation module;
the temperature-adjusting heat exchange module is used for adjusting the ambient temperature, is connected in parallel with the heat exchange circulation module and forms heat exchange with the heat exchange circulation module.
The photovoltaic cogeneration component and the heat exchange circulation module are respectively communicated with the heat collection and heat exchange module, so that heat generated by the photothermal conversion of the photovoltaic cogeneration component can be effectively concentrated and stored, the reserve quantity of the heat is sufficient, and the reserve effect of the heat collection and heat exchange module is utilized, so that sufficient heat can be effectively ensured to be supplied in overcast and rainy days or winter. In addition, the heat collection and heat exchange module also has the function of a transfer station, namely, the input heat is output to the heat exchange circulation module, and finally, the heat is transmitted to the temperature adjustment and heat exchange module through the circulation output of the heat exchange circulation module, so that the aim of adjusting the ambient temperature is fulfilled.
Further, the heat exchange circulation module comprises an evaporator, a compressor and a condenser, wherein the evaporator, the compressor and the condenser are communicated through a conduit to form an internal circulation in which a refrigerant can circularly flow, and the evaporator is communicated with the heat collection and heat exchange module through the second circulation pump and the second communicating pipe;
the hot water module of the temperature-adjusting heat exchange module is connected in parallel with the condenser and forms heat exchange with the condenser, and is used for adjusting the temperature of water in the environment.
Further, the hot water module comprises a third circulating pump, a third communicating pipe and a heat preservation liner for storing the water, the heat preservation liner is communicated with the condenser through the third circulating pump and the third communicating pipe to form a hot water circulation which can circularly flow the water, and the hot water circulation can form heat exchange with the internal circulation.
Further, the temperature-adjusting heat exchange module further comprises a gas-liquid heat exchange assembly, wherein the gas-liquid heat exchange assembly is communicated with the internal circulation through a conduit and used for heat exchange between the refrigerant and the air in the environment so as to adjust the temperature of the air in the environment.
Further, the gas-liquid heat exchange assembly comprises a fan coil, a power pump, a heat exchange external connection pipe and a heat exchanger communicated with the internal circulation, the fan coil is communicated with the heat exchanger through the power pump and the heat exchange external connection pipe, so that a gas-liquid heat exchange circulation with circulating flow of heat exchange medium is formed, and the gas-liquid heat exchange circulation can form heat exchange with the internal circulation.
Further, the heat exchange circulation module further comprises a four-way valve, which is used for changing the communication sequence of the evaporator, the compressor, the condenser and the gas-liquid heat exchange assembly, so that the temperatures of the hot water module and the gas-liquid heat exchange assembly can be increased.
Further, a temperature sensor is arranged in the heat collecting and exchanging module.
Further, the heat exchange cycle module also comprises a throttle valve for controlling and stabilizing the flow rate of the refrigerant flowing through the condenser or the four-way valve.
Further, the photovoltaic cogeneration assembly is composed of a photovoltaic portion for converting solar energy into electrical energy and a photothermal portion for converting solar energy into thermal energy.
The utility model also discloses a control method of the energy storage system based on the combination of the PVT and the heat exchange circulation module, which comprises the following steps:
when the heat storage system simply prepares cold air flow, the specific steps are as follows:
step1-A, starting the second circulating pump, so that the heat storage liquid in the heat collection and exchange module continuously circulates, and exchanges heat with the refrigerant in the evaporator when passing through the evaporator of the heat exchange and exchange module;
step2, starting a compressor of the heat exchange circulation module, pressurizing the refrigerant, pushing the refrigerant to flow through a heat exchanger of the temperature-adjusting heat exchange module, and exchanging heat with water in the heat exchanger;
step3-A, starting a fan coil and a power pump of the temperature-regulating heat exchange module, so that a heat exchange medium in the fan coil continuously circulates to continuously prepare cold air flow, and simultaneously, when the heat exchange medium flows through the heat exchanger, the heat exchange medium exchanges heat with a refrigerant flowing through the heat exchanger.
Further, when the heat storage system simply prepares warm water, the Step1-a and the Step2 are unchanged, and the Step3-a is replaced by the Step3-B, specifically:
and starting a third circulating pump of the temperature-adjusting heat exchange module, so that the heated water in the condenser of the heat exchange module flows back to the heat preservation liner of the temperature-adjusting heat exchange module, and the water in the heat preservation liner is output to the condenser for heating until the water temperature of the water rises to the set temperature.
Further, when the heat storage system simultaneously prepares warm water and cold air flow, the Step2 and the Step3-a are unchanged, and the Step1-a is replaced by the Step1-B, specifically: and starting a third circulating pump of the temperature-adjusting heat exchange module, so that the heated water in the condenser of the heat exchange module flows back to the heat preservation liner of the temperature-adjusting heat exchange module, and the water in the heat preservation liner is output to the condenser for heating until the water temperature of the water rises to the set temperature.
Further, when the heat storage system simultaneously prepares warm water and hot air flow, a Step Step1.5 is added between the Step Step1-A and the Step Step2, specifically: adjusting and controlling a four-way valve of a heat exchange circulation module, and starting a third circulation pump of the temperature-regulating heat exchange module, so that a large amount of heat-carrying refrigerant flows through a condenser of the heat exchange circulation module, heated water in the condenser flows back to a heat preservation liner of the temperature-regulating heat exchange module, and the water in the heat preservation liner is output to the condenser for heating until the water temperature of the water rises to a set temperature; meanwhile, the fluid continuously prepared in Step3-A is a hot air stream.
In summary, the energy storage system combining PVT and the heat exchange circulation module provided by the utility model has the following technical effects:
1. the photovoltaic cogeneration assembly, the heat exchange circulation module and the heat collection heat exchange module are mutually matched, so that the problem that the quantity of heat generated by the reserved solar energy of the existing solar water heating system is insufficient is solved effectively, and meanwhile, the heat generated by the solar energy is stored for a long time, so that the unexpected effect of cross-season supply and use is realized, and the sufficient heat can be used in overcast and rainy days or winter.
2. The photovoltaic cogeneration component can effectively realize synchronous photo-thermal conversion and photoelectric conversion, and effectively improve the conversion efficiency of solar energy and the comprehensive utilization rate of solar energy.
Drawings
FIG. 1 is an overall schematic diagram of an energy storage system incorporating PVT and a heat exchange cycle module of the present utility model;
FIG. 2 is a schematic diagram of the energy storage system of the present utility model combining PVT with a heat exchange cycle module in the preparation of warm water, and it should be noted that the broken line in the schematic diagram represents an interruption/disconnection state;
FIG. 3 is a schematic diagram of the energy storage system of the present utility model combining PVT with a heat exchange cycle module in the preparation of warm water and cold air streams, wherein the broken line represents the broken/open state;
FIG. 4 is a schematic diagram of the energy storage system of the present utility model combining PVT with the heat exchange cycle module in preparing hot water and hot air, and it should be noted that the broken line represents the broken/off state;
FIG. 5 is a schematic diagram of the energy storage system of the present utility model in combination with a heat exchange cycle module in the preparation of a cold gas stream, it should be noted that the broken line represents an interrupted/open state;
FIG. 6 is a schematic view of a hot water module according to the present utility model;
fig. 7 is a schematic structural diagram of a gas-liquid heat exchange assembly according to the present utility model.
Icon: 11-heat collection and heat exchange module, 21-photovoltaic cogeneration component, 3-heat exchange circulation module, 31-evaporator, 32-compressor, 33-condenser, 36-four-way valve, 37-throttle valve, 41-first circulation pump, 42-second circulation pump, 431-cold liquid pipeline, 432-hot liquid pipeline, 433-connecting pipeline, 441-heat exchange high temperature pipe, 442-heat exchange low temperature pipe, 443-external pipeline, 51-hot water module, 511-third circulation pump, 512-heat preservation liner, 513-liner conveying pipe, 514-liner output pipe, 515-connecting conduit, 52-gas-liquid heat exchange component, 521-fan coil, 522-power pump, 523-heat exchanger, 524-heat exchange external connection pipe.
Detailed Description
For a better understanding and implementation, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model.
In the description of the present utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.
First embodiment
Referring to fig. 1 and 2, the present utility model discloses an energy storage system combining PVT and a heat exchange cycle module 3, comprising:
the heat collection and heat exchange module 11 with the heat storage liquid is arranged in the heat collection and heat exchange module 11, namely the heat collection and heat exchange module 11 is preferably an underground heat storage water tank, so that geothermal energy can be effectively utilized, heat can be well stored for a long time, meanwhile, the effects of saving conventional energy and improving the comprehensive utilization rate of the whole energy are realized, the heat collection and heat exchange module 11 can also be a large-capacity heat storage tank or a large-capacity heat storage box, and the heat collection and heat exchange module 11 is provided with a heat collection cavity capable of storing the heat storage liquid and a large amount of heat, and a heat exchange output port, a heat exchange input port, a photovoltaic heat output port and a photovoltaic heat input port which are arranged in the heat collection cavity;
the photovoltaic cogeneration assembly 21 is used for generating electricity and heat, and the photovoltaic cogeneration assembly 21 is communicated with the heat collection and heat exchange module 11 through the first circulating pump 41 and the first communication pipe, so that the heat generated by the photovoltaic cogeneration assembly 21 is transmitted and stored into the heat collection and heat exchange module 11;
specifically, the photovoltaic cogeneration component 21 is a solar photovoltaic and photo-thermal integrated component, and the photovoltaic cogeneration component 21 is composed of a photovoltaic part and a photo-thermal part. The photovoltaic part mainly adopts a solar photovoltaic panel with mature technology to convert solar energy into electric energy, and then the required electric energy is supplied through a control system. The photo-thermal part is mainly a heat collector, converts solar energy into heat energy, and synchronously utilizes a thermal circulation mechanism to cool the photovoltaic cogeneration component 21, so that the photoelectric conversion efficiency is improved, and the solar heat energy is utilized more efficiently.
The heat exchange circulation module 3, the heat exchange circulation module 3 is communicated with the heat collection and heat exchange module 11 through the second circulation pump 42 and the second communicating pipe, so that the heat stored in the heat collection and heat exchange module 11 can be output to the heat exchange circulation module 3;
the temperature-adjusting heat exchange module is used for adjusting the ambient temperature, is connected in parallel with the heat exchange circulation module 3 and forms heat exchange with the heat exchange circulation module 3.
As a core point of the embodiment, the photovoltaic cogeneration assembly 21 and the heat exchange circulation module 3 are respectively communicated with the heat collection and heat exchange module 11, so that the heat collection and heat exchange module 11 can concentrate and store heat generated by the photovoltaic cogeneration assembly 21 in time, efficiently absorb the heat generated by the photovoltaic cogeneration assembly 21, and further realize the purpose of long-term heat storage. More importantly, the heat collecting and exchanging module 11 also has the function of a transfer station, namely, the input heat is output to the heat exchanging and circulating module 3, and finally, the heat is transmitted to the temperature adjusting and exchanging module through the circulating output of the heat exchanging and circulating module 3, so that the aim of adjusting the ambient temperature is fulfilled.
In this embodiment, as shown in fig. 1, the first communication pipe includes a cold liquid pipe 431, a hot liquid pipe 432 and a connection pipe 433, one end of the cold liquid pipe 431 is connected to the output port of the first circulation pump 41, the other end of the cold liquid pipe 431 is connected to the liquid inlet of the co-generation photovoltaic module 21, one end of the hot liquid pipe 432 is connected to the liquid outlet of the co-generation photovoltaic module 21, the other end of the hot liquid pipe 432 is connected to the photovoltaic heat input port of the heat collection module 11, one end of the connection pipe 433 is connected to the photovoltaic heat output port of the heat collection module 11, the other end of the connection pipe 433 is connected to the input port of the first circulation pump 41, so that the purpose that the heat collection module 11 is communicated with the co-generation photovoltaic module 21 is achieved, when the first circulation pump 41 is started, the heat storage liquid is caused to flow into the inside of the co-generation photovoltaic heat module 21, at this moment, a large amount of heat generated by the photo-thermal energy in the photo-thermal part of the co-generation photovoltaic module 21 is transferred into the heat storage liquid, and then transferred into the inside the heat collection module 11 along with the heat storage liquid flow, so that the heat generated by the co-generation photovoltaic heat module 21 is realized, the heat generated by the co-generation photovoltaic heat can be concentrated into the heat collection module 11, and the heat exchange module 11 can be properly arranged in the heat-generation mode, and the heat storage module can be circulated and the first circulation pump can be adjusted, and the heat pump can be properly, and the heat-exchange pipe can be arranged.
As shown in fig. 1, the second communication pipe includes a heat exchange high temperature pipe 441, a heat exchange low temperature pipe 442 and an external connection pipe 443, the input end of the heat exchange circulation module 3 is connected to one end of the heat exchange high temperature pipe 441, the output end of the heat exchange circulation module 3 is connected to one end of the heat exchange low temperature pipe 442, the other end of the heat exchange high temperature pipe 441 is connected to the output port of the second circulation pump 42, the other end of the heat exchange low temperature pipe 442 is connected to the heat exchange input port of the heat collection heat exchange module 11, one end of the external connection pipe 443 is connected to the input port of the second circulation pump 42, and the other end of the external connection pipe 443 is connected to the heat exchange output port of the heat collection heat exchange module 11, so that the heat collection heat exchange module 11 is communicated with the heat exchange circulation module 3.
In summary, under the cooperation of the heat collecting and exchanging module 11, the photovoltaic cogeneration assembly 21 and the heat exchanging and circulating module 3, the heat collecting and exchanging module can collect heat and use the heat at different times, and meanwhile, the heat storage function and the high capacity of the heat collecting and exchanging module 11 are utilized, so that the effects of collecting heat in daytime and using the heat at night can be realized, and in addition, the problems of excessive heat in summer and insufficient heat in winter can be solved, and the unexpected effect of using the heat in seasons can be achieved. Furthermore, heat is transferred between the heat exchange circulation module 3 and the heat collection heat exchange module 11 and between the heat exchange circulation module 3 and the temperature adjustment heat exchange module in a heat exchange mode, so that heat transfer can be continuous and stable, and circulation between each fluid medium is free from interference.
Specifically, as shown in fig. 1 and 2, the heat exchange circulation module 3 includes an evaporator 31, a compressor 32, and a condenser 33, where the evaporator 31, the compressor 32, and the condenser 33 are connected by pipes to form an internal circulation in which the refrigerant can circulate, that is, the refrigerant can flow through the evaporator 31, the compressor 32, the condenser 33 in sequence and be converted into a state, and finally flows back into the evaporator 31, so as to achieve the purpose of reciprocating circulation. The evaporator 31 is communicated with the heat collecting and exchanging module 11 through the second circulating pump 42 and the second communicating pipe, when the heat storage liquid in the heat collecting and exchanging module 11 carries a large amount of heat to the evaporator 31 of the heat exchanging and exchanging module 3, the heat storage liquid exchanges heat with the refrigerant in the evaporator 31, the large amount of heat in the heat storage liquid rapidly transfers the refrigerant, the heat absorbed by the refrigerant is converted from a low-pressure liquid state to a low-pressure gas state and flows to the compressor 32, the refrigerant is converted from the low-pressure gas state to a high-pressure gas state under the compression action of the compressor 32, and the large amount of heat in the refrigerant is rapidly released in the process that the high-pressure gas state refrigerant flows through the condenser 33, so that the refrigerant can be recovered to the low-temperature liquid state when the refrigerant flows back to the evaporator 31.
Further, referring to fig. 1 and 2, the temperature-adjusting heat exchange module includes a hot water module 51, and the hot water module 51 is connected in parallel to the condenser 33 and forms heat exchange with the condenser 33 for adjusting the temperature of water in the environment. That is, the heat generated by the photovoltaic cogeneration module 21 and stored in the heat collecting and exchanging module 11 is transferred through the internal circulation and finally transferred to the hot water module 51 through the condenser 33, thereby achieving the purpose of heating water.
Specifically, as shown in fig. 2 and 6, the hot water module 51 includes a third circulation pump 511, a third communication pipe, and a heat insulation liner 512 for storing water, where the third communication pipe includes a liner conveying pipe 513, a liner output pipe 514, and a connecting pipe, one end of the liner conveying pipe 513 is connected to an input interface of the heat insulation liner 512, the other end is connected to an output port of the third circulation pump 511, one end of the liner output pipe 514 is connected to an output interface of the heat insulation liner 512, the other end is connected to a water inlet end of the condenser 33, one end of the connecting pipe is connected to a water outlet end of the condenser 33, and the other end is connected to an input port of the third circulation pump 511, so that the purpose that the heat insulation liner 512 is communicated with the condenser 33 through the third circulation pump 511 and the third communication pipe is achieved, low-temperature water in the heat insulation liner 512 can circulate along the heat insulation liner 512, the condenser 33 and the third circulation pump 511 in sequence, so as to form a hot water circulation that can circulate, and the hot water circulation can form heat exchange with the internal circulation, that is, in this process, the low-temperature water flows through the condenser 33, the high-temperature water can be quickly cooled, and the high-temperature absorbent can be quickly released, on the one hand, and on the other hand, and the purpose that the high-temperature refrigerant can be quickly cooled.
Therefore, the control method and principle of the energy storage system combining PVT and the heat exchange circulation module 3 for preparing warm water in the embodiment are as follows:
step1-A, starting a second circulating pump 42, so that the heat storage liquid in the heat collecting and exchanging module 11 continuously circulates and flows, and exchanges heat with the refrigerant in the evaporator 31 when passing through the evaporator 31;
step2, starting the compressor 32, pressurizing the refrigerant, simultaneously pushing the refrigerant to continuously circulate along the evaporator 31, the compressor 32 and the condenser 33, and exchanging heat with water in the condenser 33 when passing through the condenser 33;
step3-B, starting the third circulating pump 511, so that the water heated in the condenser 33 flows back to the heat preservation liner 512, and the water in the heat preservation liner 512 is output to the condenser 33 for heating until the water temperature of the water rises to the set temperature, and is supplied to consumers for drinking, bathing or cleaning.
The control system mainly comprises a photovoltaic cell, a storage battery and an inverter, wherein after the photovoltaic panel of the photovoltaic cogeneration component 21 generates electric energy, the formed direct current passes through the inverter, the inverter converts the direct current electric energy into alternating current electric energy with fixed frequency and fixed voltage or frequency and voltage modulation and voltage regulation as same as the commercial power parameters, and the alternating current electric energy is supplied to a building electric appliance for normal use.
Second embodiment
Based on the energy storage system combining PVT with the heat exchange cycle module 3 disclosed in the first embodiment, the inventor has further developed and disclosed a further solution, specifically please refer to fig. 1 and 3, wherein the temperature-adjusting heat exchange module further includes a gas-liquid heat exchange assembly 52, and the gas-liquid heat exchange assembly 52 is communicated with the inner cycle through a conduit, so that the refrigerant can exchange heat with air in the environment to adjust the temperature of the air in the environment. I.e. the heat generated by the photovoltaic cogeneration module 21 and stored in the heat collection heat exchange module 11 is transported via internal circulation, eventually at least part of the heat can be transferred to the gas-liquid heat exchange module 52, thereby providing a certain heat effect to the air in the environment.
As one possible solution, the gas-liquid heat exchange assembly 52 may be a fan coil 521, where the fan coil 521 is mainly composed of a fan, a motor, and a coil heat exchange member, and the coil heat exchange member is located at one side of the fan, and the fan is mounted on a driving end of the motor, so that when the motor is started, the fan is driven to rotate, and air near the coil heat exchange member forms fluid (flowing air) passing through the coil heat exchange member. Further, the evaporator 31 and the condenser 33 are respectively connected to the coil heat exchange member through the pipes, so that when the refrigerant flows through the evaporator 31 and then absorbs heat exchanged with the heat collecting and heat exchange module 11 to obtain heat, and then flows through the coil heat exchange member, the temperature of the refrigerant is higher than that of air, and the heat is released into the air, and under the action of the fan, hot air flows are formed and spread to other positions in the environment. Conversely, when the liquid refrigerant flowing through the condenser 33 passes through the coil heat exchange member, the liquid refrigerant absorbs heat in the air and forms a cold air flow to diffuse to other positions in the environment under the action of the fan, thereby achieving the purpose of adjusting the temperature of the air in the environment.
As a most preferred solution, specifically referring to fig. 3 and 7, the gas-liquid heat exchange assembly 52 includes a fan coil 521, a power pump 522, a heat exchange external connection pipe 524 and a heat exchanger 523 communicating with an internal circulation, wherein heat exchange media are all built in the coil heat exchange member, the power pump 522, the heat exchange external connection pipe 524 and the heat exchanger 523 of the fan coil 521, the fan coil 521 is communicated with the heat exchanger 523 through the power pump 522 and the heat exchange external connection pipe 524, the heat exchange media can circulate along the coil heat exchange member, the heat exchanger 523 and the power pump 522 in sequence under the driving of the power pump 522, so as to form a gas-liquid heat exchange cycle in which the heat exchange media can circulate, and the gas-liquid heat exchange cycle can form heat exchange with the internal circulation.
That is, by utilizing the characteristic that the heat exchanger 523 can transfer heat from hot fluid to cold fluid, the refrigerant in the internal circulation and the heat exchange medium in the gas-liquid heat circulation can flow independently through the heat exchanger 523, when the heat of the refrigerant is larger than that of the heat exchange medium in the process that the heat exchange medium flows through the heat exchanger 523, the heat is transferred from the refrigerant to the heat exchange medium and is transferred to the fan coil 521 through the gas-liquid heat circulation, and finally released and diffused into the air, and when the heat of the refrigerant is smaller than that of the heat exchange medium, the heat in the heat exchange medium is transferred to the refrigerant, so that the heat exchange medium is smaller than that in the air, and then the heat exchange medium absorbs a large amount of heat in the air when flowing through the fan coil 521, thereby achieving the purpose of adjusting the temperature of the air in the environment.
Unexpectedly, on one hand, because the coil heat exchange element is exposed in the air, the refrigerant directly flows through the coil heat exchange element to generate heat exchange with the air, so that the problem of energy loss caused by the refrigerant flowing through the coil heat exchange element is effectively avoided by utilizing the gas-liquid heat exchange circulation, the temperature adjustment of the air is more controllable, on the other hand, the flexible arrangement of the fan coil 521 in the position in the environment is facilitated (for example, the heat exchanger 523, the evaporator 31, the compressor 32 and the condenser 33 can be arranged in a relatively closed environment, and the fan coil 521 can be assembled in a living environment).
More unexpectedly, the energy storage system combining the PVT and the heat exchange circulation module 3 can directly utilize the heat in the air to heat the water, so that the purposes of high efficiency and energy conservation are achieved, the energy storage system is very suitable for the condition of the bathing water in summer, at this time, the heat in the air is sufficient, and the water temperature of the water in the heat preservation liner 512 is not required to be too high. As shown in fig. 3, the energy storage system combined with the PVT and heat exchange cycle module 3 prepares the corresponding control method and principle of warm water and cold air flow as follows:
step1-B, starting a third circulating pump 511 to enable the heated water in the condenser 33 to flow back to the heat preservation liner 512, outputting the water in the heat preservation liner 512 to the condenser 33 for heating until the water temperature of the water rises to a set temperature, and supplying the water to a consumer for bathing or cleaning;
step2, starting the compressor 32, pressurizing the refrigerant, simultaneously pushing the refrigerant to continuously circulate along the evaporator 31, the compressor 32 and the condenser 33, and exchanging heat with water in the condenser 33 when passing through the condenser 33;
step3-a, the motor and power pump 522 of the fan coil 521 are started, so that the heat exchange medium in the fan coil 521 continuously circulates to continuously prepare the cold air flow, and simultaneously, when the heat exchange medium flows through the heat exchanger 523, heat exchange is continuously performed with the refrigerant flowing through the heat exchanger 523.
In summary, when the heat existing in the refrigerant passes through the condenser 33, the hot water module 51 is matched to prepare the warm water with the corresponding temperature, and when the refrigerant cooled by the condenser 33 passes through the gas-liquid heat exchange assembly 52, the heat in the air can be absorbed at the same time, so as to reduce the temperature in the air, thereby achieving the unexpected effect of dual adjustment of the air and the water in the environment.
By way of supplementary explanation, the heat collecting and exchanging module 11 and the gas-liquid heat exchanging assembly 52 are used in cooperation, and the energy storage system combined by the PVT and the heat exchanging circulation module 3 is prepared to be capable of preparing cold air flow, and specifically, as shown in fig. 5, the control method and principle thereof are as follows:
step1-A, starting a second circulating pump 42, so that the heat storage liquid in the heat collecting and exchanging module 11 continuously circulates and flows, and exchanges heat with the refrigerant in the evaporator 31 when passing through the evaporator 31;
step2, starting the compressor 32, pressurizing the refrigerant, and simultaneously pushing the refrigerant to continuously circulate along the evaporator 31, the compressor 32 and the condenser 33, and exchanging heat with the heat exchange medium in the heat exchanger 523 when the refrigerant passes through the heat exchanger 523;
step3-a, the motor and power pump 522 of the fan coil 521 are started, so that the heat exchange medium in the fan coil 521 continuously circulates to continuously prepare the cold air flow, and at the same time, the heat exchange medium exchanges heat with the refrigerant flowing through the heat exchanger 523 when flowing through the heat exchanger 523.
It is important to note that, in Step2, the condenser 33 is in an inactive state, only the compressor 32 and the evaporator 31 are started, and the heat in the heat storage liquid in Step1-a is smaller than the heat in the refrigerant, so that when the refrigerant flows through the evaporator 31, the heat in the refrigerant can be reversely transferred to the heat storage liquid, and then the heat exchange medium in Step3-a has a heat greater than the heat in the refrigerant, and the refrigerant absorbs the heat in the heat exchange medium, so that the heat of the air is absorbed due to the heat greater than the heat of the heat exchange medium in the process of flowing through the fan coil 521, and finally the flowing gas formed by the fan coil 521 is the cold air flow.
In summary, the heat collection and heat exchange module 11 not only can effectively ensure the purpose that the energy storage system can store heat for a long time, solves the problems of excessive heat in summer and insufficient heat in winter, but also improves the generating capacity of the photovoltaic system, and more importantly, the heat collection and heat exchange module is matched with the gas-liquid heat exchange assembly 52 to realize unexpected refrigeration effect, thereby solving the problem that the PVT technology and the heat pump technology in the solar industry cannot be combined to refrigerate.
In addition, the principle of preparing cold air flow by the energy storage system combined with the PVT and the heat exchange circulation module 3 is also applicable to the principle of preparing hot air flow, only the heat in the heat storage liquid in Step1-a is required to be larger than the heat in the refrigerant, the heat in the heat storage liquid can be transferred to the refrigerant, the heat in the heat exchange medium in Step3-a is smaller than the heat in the refrigerant, the heat in the refrigerant is absorbed by the heat exchange medium, the heat exchange medium is released into the air due to the fact that the heat of the heat exchange medium is larger than the heat of the air in the process of flowing through the fan coil 521, and finally the flowing gas formed by the fan coil 521 is the hot air flow.
Further, in the principle of preparing a cold air flow by the energy storage system combined with the PVT and the heat exchange circulation module 3, in order to generate a larger temperature difference when the refrigerant flows through the heat exchanger 523, the flow direction of the refrigerant is preferably from the evaporator 31 to the heat exchanger 523, but not limited to the preferred flow direction, and the flow direction of the refrigerant may also be from the condenser 33 to the heat exchanger 523. In the principle of preparing the hot air flow by the energy storage system combined with the PVT and the heat exchange cycle module 3, the compressor 32 generates a certain amount of heat during the compression process, so that the refrigerant flows from the condenser 33 to the heat exchanger 523 in a preferred flow direction, but is not limited to the preferred flow direction, in order to generate a larger temperature difference when the refrigerant flows through the evaporator 31 and the heat exchanger 523.
Furthermore, in order to accurately detect the temperature of the heat storage liquid in the heat collection and exchange module 11, not only is the use condition of the energy storage system combined with the heat exchange circulation module 3 and PVT better detected, but also more importantly, the temperature difference between the heat storage liquid and water in the heat preservation liner 512 and the temperature difference between the heat storage liquid and air are better estimated, and a temperature sensor is arranged in the heat collection and exchange module 11.
Third embodiment
The energy storage system combining PVT with the heat exchange cycle module 3 disclosed in the second embodiment achieves the purpose of being capable of effectively utilizing heat in the heat collecting and heat exchanging module 11 to rapidly prepare hot air flow or cold air flow, and in addition, the purpose of preparing warm water and preparing cold air flow at the same time can be achieved by the hot water module 51 and the gas-liquid heat exchanging assembly 52, and considering the situation that the energy storage system is applied to winter, that is, the temperature of water and air in winter is low, a certain amount of heat needs to be supplied to the water and the air.
However, when the heat provided by the heat collecting and heat exchanging module 11 flows through the hot water module 51, a large amount of heat will be absorbed by the water, which easily results in insufficient heat provided to the air, or when the heat provided by the heat collecting and heat exchanging module 11 flows through the gas-liquid heat exchanging assembly 52, a large amount of heat will be diffused into the air, which in turn results in insufficient heat provided to the air.
Therefore, in view of the above-mentioned situation and existing drawbacks, the present inventors have found that, based on the energy storage system combining PVT with the heat exchange cycle module 3 disclosed in the second embodiment, while retaining the principles and effects of the energy storage system in the first embodiment and the second embodiment, hot water and hot air flow can be simultaneously prepared, and specifically, in combination with fig. 1 and 4, the heat exchange cycle module 3 further includes a four-way valve 36 for changing the communication sequence of the evaporator 31, the compressor 32, the condenser 33 and the gas-liquid heat exchange assembly 52, so that the temperatures of the hot water module 51 and the gas-liquid heat exchange assembly 52 can be raised.
Specifically, the four-way valve 36 has four ports, which are defined as a first port, a second port, a third port and a fourth port, the evaporator 31 is connected to the first port of the four-way valve 36 through a conduit, one port of the compressor 32 is connected to the second port of the four-way valve 36 through a conduit, the other port is connected to the condenser 33 through a conduit, the condenser 33 is connected to the third port of the four-way valve 36 through a conduit, the fourth port of the four-way valve 36 is connected to the heat exchanger 523 of the gas-liquid heat exchange assembly 52, and the heat exchanger 523 is connected to the evaporator 31 through a conduit.
Therefore, when the energy storage system separately prepares warm water, hot air flow, cold air flow, or prepares cold air flow and warm water simultaneously, as shown in fig. 2, 3 and 5, the flow path among the evaporator 31, the compressor 32, the condenser 33, the gas-liquid heat exchange assembly 52 and the four-way valve 36 can refer to the flow direction of the refrigerant, and it should be noted that the flow direction of the refrigerant is not affected by the flow path of the refrigerant, and the specific analysis is as follows: the refrigerant will flow through the evaporator 31, the four-way valve 36, the compressor, the condenser 33, the four-way valve 36, the gas-liquid heat exchange assembly 52 in this order, namely:
1. in the process of preparing warm water, the energy storage system comprises the following steps: after the refrigerant absorbs a large amount of heat of the heat storage liquid through the evaporator 31, the refrigerant sequentially flows through the four-way valve 36 and the compressor, flows through the condenser 33, releases and transfers a large amount of heat into the water for heating, and the refrigerant losing a large amount of heat flows through the four-way valve 36 and the gas-liquid heat exchange component 52 and finally flows back to the evaporator 31.
2. The energy storage system is in the process of preparing hot air flow: after the refrigerant absorbs a large amount of heat of the heat storage liquid through the evaporator 31, the refrigerant sequentially flows through the four-way valve 36, the compressor, the condenser 33 and the four-way valve 36, flows through the gas-liquid heat exchange assembly 52, releases and transfers the large amount of heat into the air, the purpose of preparing hot air flow is achieved, and the refrigerant losing a large amount of heat finally flows back to the evaporator 31.
3. The energy storage system is in the process of preparing cold air flow: after the refrigerant passes through the evaporator 31 to release a large amount of heat to the heat storage liquid, the refrigerant flows through the gas-liquid heat exchange assembly 52 and absorbs a large amount of heat in the air to fulfill the aim of preparing cold air flow, and the refrigerant carrying a large amount of heat flows through the four-way valve 36, the condenser 33, the compressor and the four-way valve 36 in sequence and finally flows back to the evaporator 31.
4. The energy storage system is in the process of simultaneously preparing cold air flow and warm water: the refrigerant flows through the evaporator 31, then flows through the gas-liquid heat exchange assembly 52 and absorbs a large amount of heat in the air to complete the purpose of preparing cold air flow, and the refrigerant carrying a large amount of heat flows through the four-way valve 36, then flows through the condenser 33 and releases and transfers a large amount of heat into water to complete the purpose of heating the water, and the refrigerant losing a large amount of heat flows through the compressor and the four-way valve 36 and finally flows back to the evaporator 31.
When the energy storage system is used for preparing warm water and hot air at the same time, the structure of the four-way valve 36 is utilized to change the communication relation of four ports of the four-way valve 36, namely, the flow path of the refrigerant is changed, so that at least part of heat of the refrigerant absorbed by the hot water module 51 or the gas-liquid heat exchange assembly 52 can be recovered under the action of the compressor 32, compression work of the compressor 32 is effectively utilized, and the refrigerant is ensured to have enough heat to release when passing through the gas-liquid heat exchange assembly 52 or the hot water module 51.
The flow path of the refrigerant is specifically changed as follows: the refrigerant absorbs a large amount of heat of the heat storage liquid through the evaporator 31, then flows through the four-way valve 36, flows through the four-way valve and releases and transfers most of the heat to water to heat the water, the refrigerant losing a large amount of heat flows through the compressor, absorbs the heat generated by the compressor 32, flows through the four-way valve 36, flows through the gas-liquid heat exchange assembly 52, releases and transfers a large amount of heat to the air to prepare hot air flow, and the refrigerant losing a large amount of heat finally flows back to the evaporator 31. Briefly, the refrigerant will flow through the evaporator 31, the four-way valve 36, the condenser 33, the compressor 32, the four-way valve 36, and the gas-liquid heat exchange assembly 52 in that order.
The corresponding control method and principle of the energy storage system combined by the PVT and the heat exchange circulation module 3 for preparing warm water and hot air flow are as follows:
step1-A, starting a second circulating pump 42, so that the heat storage liquid in the heat collecting and exchanging module 11 continuously circulates and flows, and exchanges heat with the refrigerant in the evaporator 31 when passing through the evaporator 31;
step1.5, adjusting and controlling the four-way valve 36, and starting the third circulating pump 511, so that the refrigerant carrying a large amount of heat flows through the condenser 33, the water heated in the condenser 33 flows back to the heat preservation liner 512, the water in the heat preservation liner 512 is output to the condenser 33 for heating until the water temperature of the water rises to a set temperature, and the water is supplied to a consumer for bathing or cleaning.
Step2, starting the compressor 32, pressurizing the refrigerant, and pushing the refrigerant to flow through the four-way valve 36 and then to the heat exchanger 523 of the gas-liquid heat exchange assembly 52, and exchanging heat with the heat exchange medium in the heat exchanger 523 when the refrigerant passes through the heat exchanger 523;
step3-a, the motor and power pump 522 of the fan coil 521 are started, so that the heat exchange medium in the fan coil 521 continuously circulates to continuously prepare the hot air flow, and at the same time, the heat exchange medium exchanges heat with the refrigerant flowing through the heat exchanger 523 when flowing through the heat exchanger 523.
Further, and in particular with reference to fig. 1, the heat exchange cycle module 3 further includes a throttle valve 37 for controlling and stabilizing the flow of refrigerant through the condenser 33 or the four-way valve 36.
The technical means disclosed by the scheme of the utility model is not limited to the technical means disclosed by the embodiment, and also comprises the technical scheme formed by any combination of the technical features. It should be noted that modifications and adaptations to the utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.
Claims (9)
1. An energy storage system incorporating PVT in combination with a heat exchange cycle module, comprising:
a heat collection and exchange module (11) with heat storage liquid inside;
the photovoltaic cogeneration assembly (21) is used for generating electricity and heat, and the photovoltaic cogeneration assembly (21) is communicated with the heat collection and heat exchange module (11) through a first circulating pump (41) and a first communication pipe so that heat generated by the photovoltaic cogeneration assembly (21) is transmitted and stored into the heat collection and heat exchange module (11);
the heat exchange circulation module (3), the heat exchange circulation module (3) is communicated with the heat collection and heat exchange module (11) through a second circulation pump (42) and a second communicating pipe, so that heat stored in the heat collection and heat exchange module (11) can be output to the heat exchange circulation module (3);
the temperature-adjusting heat exchange module is used for adjusting the ambient temperature, is connected in parallel with the heat exchange circulation module (3) and forms heat exchange with the heat exchange circulation module (3).
2. The energy storage system of claim 1 in combination with a PVT and heat exchange cycle module, wherein: the heat exchange circulation module (3) comprises an evaporator (31), a compressor (32) and a condenser (33), wherein the evaporator (31), the compressor (32) and the condenser (33) are communicated through a conduit to form an internal circulation in which a refrigerant can circularly flow, and the evaporator (31) is communicated with the heat collection and heat exchange module (11) through the second circulation pump (42) and the second communicating pipe;
the hot water module (51) of the temperature-adjusting heat exchange module is connected in parallel with the condenser (33) and forms heat exchange with the condenser (33) for adjusting the temperature of water in the environment.
3. The energy storage system of claim 2 in combination with a PVT and heat exchange cycle module, wherein: the hot water module (51) comprises a third circulating pump (511), a third communicating pipe and a heat preservation inner container (512) for storing water, the heat preservation inner container (512) is communicated with the condenser (33) through the third circulating pump (511) and the third communicating pipe to form hot water circulation capable of circularly flowing water, and the hot water circulation can form heat exchange with the inner circulation.
4. The energy storage system of claim 2 in combination with a PVT and heat exchange cycle module, wherein: the temperature-adjusting heat exchange module further comprises a gas-liquid heat exchange assembly (52), wherein the gas-liquid heat exchange assembly (52) is communicated with the internal circulation through a conduit and is used for enabling the refrigerant to exchange heat with air in the environment so as to adjust the temperature of the air in the environment.
5. The energy storage system of claim 4 in combination with a heat exchange cycle module, wherein: the gas-liquid heat exchange assembly (52) comprises a fan coil (521), a power pump (522), a heat exchange external connection pipe (524) and a heat exchanger (523) communicated with the internal circulation, the fan coil (521) is communicated with the heat exchanger (523) through the power pump (522) and the heat exchange external connection pipe (524), so that a gas-liquid heat exchange cycle in which a heat exchange medium can circularly flow is formed, and the gas-liquid heat exchange cycle can exchange heat with the internal circulation.
6. The energy storage system of claim 4 in combination with a heat exchange cycle module, wherein: the heat exchange circulation module (3) further comprises a four-way valve (36) for changing the communication sequence of the evaporator (31), the compressor (32), the condenser (33) and the gas-liquid heat exchange assembly (52), so that the temperatures of the hot water module (51) and the gas-liquid heat exchange assembly (52) can be increased.
7. The energy storage system of claim 6 in combination with a PVT and heat exchange cycle module, wherein: the heat collection and exchange module (11) is internally provided with a temperature sensor.
8. The energy storage system of claim 7 in combination with a PVT and heat exchange cycle module, wherein: the heat exchange cycle module (3) further comprises a throttle valve (37) for controlling, stabilizing the flow of the refrigerant through the condenser (33) or the four-way valve (36).
9. The energy storage system of claim 7 in combination with a PVT and heat exchange cycle module, wherein: the photovoltaic cogeneration assembly (21) is composed of a photovoltaic part for converting solar energy into electric energy and a photo-thermal part for converting solar energy into heat energy.
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