CN111076266B - Multifunctional heat pipe type photovoltaic photo-thermal hot water heating system and heating method - Google Patents

Multifunctional heat pipe type photovoltaic photo-thermal hot water heating system and heating method Download PDF

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Publication number
CN111076266B
CN111076266B CN201911406092.2A CN201911406092A CN111076266B CN 111076266 B CN111076266 B CN 111076266B CN 201911406092 A CN201911406092 A CN 201911406092A CN 111076266 B CN111076266 B CN 111076266B
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heat
heat pipe
closed loop
pipe
solar
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CN111076266A (en
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袁艳平
周锦志
蒋福建
季亚胜
高志宇
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Southwest Jiaotong University
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Southwest Jiaotong University
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24DDOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D15/00Other domestic- or space-heating systems
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24SSOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S10/00Solar heat collectors using working fluids
    • F24S10/90Solar heat collectors using working fluids using internal thermosiphonic circulation
    • F24S10/95Solar heat collectors using working fluids using internal thermosiphonic circulation having evaporator sections and condenser sections, e.g. heat pipes
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24SSOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S50/00Arrangements for controlling solar heat collectors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24SSOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S60/00Arrangements for storing heat collected by solar heat collectors
    • F24S60/30Arrangements for storing heat collected by solar heat collectors storing heat in liquids
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24SSOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S80/00Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
    • F24S80/30Arrangements for connecting the fluid circuits of solar collectors with each other or with other components, e.g. pipe connections; Fluid distributing means, e.g. headers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D15/00Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
    • F28D15/02Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
    • F28D15/04Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with tubes having a capillary structure
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02SGENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S10/00PV power plants; Combinations of PV energy systems with other systems for the generation of electric power
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02SGENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S40/00Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
    • H02S40/30Electrical components
    • H02S40/38Energy storage means, e.g. batteries, structurally associated with PV modules
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02SGENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S40/00Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
    • H02S40/40Thermal components
    • H02S40/44Means to utilise heat energy, e.g. hybrid systems producing warm water and electricity at the same time
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24DDOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2200/00Heat sources or energy sources
    • F24D2200/14Solar energy
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00Integration of renewable energy sources in buildings
    • Y02B10/10Photovoltaic [PV]
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00Integration of renewable energy sources in buildings
    • Y02B10/20Solar thermal
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00Integration of renewable energy sources in buildings
    • Y02B10/70Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/40Solar thermal energy, e.g. solar towers
    • Y02E10/44Heat exchange systems
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/60Thermal-PV hybrids
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E70/00Other energy conversion or management systems reducing GHG emissions
    • Y02E70/30Systems combining energy storage with energy generation of non-fossil origin

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Photovoltaic Devices (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)

Abstract

The invention provides a multifunctional heat pipe type photovoltaic photo-thermal water heating system and a heating method, wherein the multifunctional heat pipe type photovoltaic photo-thermal water heating system comprises a solar photovoltaic power generation system, a straight pipe type heat pipe forced water cooling system, a heat storage water tank, a closed loop heat pipe forced air cooling system, a heating room, a solar storage battery of a photoelectric storage device and a solar inverse control integrated machine; the straight pipe type forced heat pipe water cooling system comprises a straight pipe type micro-channel heat pipe, a micro-channel water cooling heat exchanger and a water pump, wherein the straight pipe type micro-channel heat pipe is provided with an evaporation end and a condensation end, and the closed loop type forced heat pipe air cooling system comprises a closed loop type heat pipe evaporator, a closed loop type heat pipe condenser and a fan.

Description

Multifunctional heat pipe type photovoltaic photo-thermal hot water heating system and heating method
Technical Field
The invention belongs to the technical field of photovoltaic photo-thermal technology, and particularly relates to a multifunctional heat pipe type photovoltaic photo-thermal hot water heating system and a heating method.
Background
With the development of solar technology and the reduction of cost of solar products, solar energy is increasingly favored as a reliable supplementary energy source, such as a solar water heating system, a distributed photovoltaic power generation system and the like. However, the current system has the problems of single function, low energy conversion efficiency, low heat transfer efficiency and the like in the practical application process. Therefore, developing a photovoltaic and photo-thermal integrated system capable of realizing multiple functions, high conversion efficiency and high utilization rate becomes an important research direction for realizing building energy conservation and meeting user demands.
At present, the photovoltaic photo-thermal system can adopt air or water as a heat exchange medium, and the air cooling type system and a building combination mode are complex because the air heat capacity is low, the density is low and the heat transfer capacity is weak, so that the current system mostly adopts a water cooling mode for heat exchange. However, the water circulation heating is mostly carried out in a floor heating mode, solar energy is subjected to a plurality of heat exchange processes from a photovoltaic photo-thermal system to a room, such as a solar module, a heat storage water tank, a floor, indoor air and the like, a large amount of heat is lost in the transfer process, and the overall heat transfer efficiency is reduced; meanwhile, the water cooling mode is easy to cause pipeline icing in winter, so that the system cannot normally operate.
The Chinese patent (CN 201310573559.9) describes a solar photovoltaic photo-thermal system of an energy-saving building, which adopts a floor heating mode to provide heat for the building, and (CN 201010224257.7) combines a photovoltaic photo-thermal module with the building in a window mode, and the systems have the problems of single function or low heating and heat transfer efficiency and the like.
Disclosure of Invention
Aiming at the problems that the existing photovoltaic and photo-thermal system is single in function or difficult to operate in winter in severe cold areas, the invention provides a heat pipe type photovoltaic and photo-thermal water heating system capable of realizing forced air cooling and forced water cooling. The system combines the straight pipe type heat pipe, the closed loop heat pipe and the photovoltaic photo-thermal module to realize the functions of water heating and heating in a forced water cooling and forced wind heat exchange mode. Under the condition of improving the heat exchange efficiency, the problems of freezing of waterways and low heat transfer efficiency in winter are solved.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
a multifunctional heat pipe type photovoltaic photo-thermal hot water heating system comprises a solar photovoltaic power generation system 1, a straight pipe type heat pipe forced water cooling system 4, a heat storage water tank 8, a closed loop heat pipe forced air cooling system 11, a heating room 17, a photovoltaic storage solar storage battery 20 and a solar energy reverse control integrated machine 21;
the solar photovoltaic power generation system 1 is arranged outdoors, the solar photovoltaic power generation system 1 comprises a solar cell array 2 and a solar photovoltaic module substrate 3, the solar cell array 2 is pressed on the front surface of the solar photovoltaic module substrate 3 through a hot melt adhesive layer, solar energy is absorbed and converted to provide electric energy and heat energy for the system, a solar storage battery 20 is connected with the solar cell array 2, a solar inverse control integrated machine 21 is connected with the solar storage battery 20, and the solar storage battery 20 and the solar inverse control integrated machine 21 are combined to operate for storing the electric energy and conveying the electric energy to a user side 19;
the straight pipe type heat pipe forced water cooling system 4 comprises a straight pipe type micro-channel heat pipe 5, a micro-channel water cooling heat exchanger 6 and a water pump 7, wherein the straight pipe type micro-channel heat pipe 5 is provided with an evaporation end and a condensation end, the evaporation end of the straight pipe type micro-channel heat pipe 5 is pressed on the back surface of the solar photovoltaic module substrate 3 through a hot melt adhesive layer to exchange heat with the solar photovoltaic module substrate 3, the condensation end of the straight pipe type micro-channel heat pipe 5 is combined with the micro-channel water cooling heat exchanger 6 through a hot melt adhesive layer and exchanges heat with the micro-channel water cooling heat exchanger 6, the inside of the straight pipe type micro-channel heat pipe 5 is provided with a refrigerant, the evaporation end of the straight pipe type micro-channel heat pipe 5 is subjected to phase change of the refrigerant in the pipe, absorbing heat of the solar photovoltaic module substrate 3 to form steam, carrying out forced convection heat exchange with cold water in the micro-channel water-cooled heat exchanger 6 after the steam rises to a condensing end, changing the heat of the cold water absorbed by the steam into hot water, entering the hot water storage tank 8, storing the heat from the solar photovoltaic module substrate 3 in the hot water storage tank 8, connecting an outlet of the micro-channel water-cooled heat exchanger 6 to an inlet of the hot water storage tank 8 through the water pump 7, connecting an outlet of the hot water storage tank 8 to an inlet of the micro-channel water-cooled heat exchanger 6, and supplying the hot water in the hot water storage tank 8 to a user end 19 through the hot water storage tank user end outlet valve 18;
the closed loop heat pipe forced air cooling system 11 comprises a closed loop heat pipe evaporator 12, a closed loop heat pipe condenser 13 and a fan 14, wherein the closed loop heat pipe evaporator 12 is pressed on the back of the solar photovoltaic module substrate 3 through a hot melt layer and exchanges heat with the solar photovoltaic module substrate 3, the closed loop heat pipe condenser 13 and the fan 14 are fixed together and are arranged indoors, the positions of the closed loop heat pipe condenser 13 and the fan 14 are higher than those of the solar photovoltaic module substrate 3, a refrigerant is arranged in the closed loop heat pipe evaporator 12, the closed loop heat pipe evaporator 12 absorbs heat of the solar photovoltaic module substrate 3 through phase change of the refrigerant in the pipe to form hot steam, the hot steam enters the closed loop heat pipe condenser 13, the fan 14 is arranged in a heating room 17 and is connected to the tail end of a hot steam outlet of the closed loop heat pipe condenser 13, and the closed loop heat pipe condenser 13 is cooled through rotation of the fan and transfers the heat into the heating room 17.
Preferably, the straight-tube microchannel heat pipe 5, the closed loop heat pipe evaporator 12, the closed loop heat pipe condenser 13 and the microchannel water-cooled heat exchanger 6 all adopt a microchannel flat pipe structure as heat exchangers.
The straight tube type micro-channel heat pipes 5 and the closed loop heat pipe evaporators 12 are alternately arranged on the back surface of the solar photovoltaic module substrate 3 in parallel, fill the interval between the opposite pipes and serve as fins.
Preferably, the water pump 7 and the hot water storage tank 8 are installed outdoors.
As a preferred mode, the outlet of the micro-channel water-cooled heat exchanger 6 is connected with the inlet of the heat storage water tank 8 through the heat storage water tank inlet valve 9; the outlet of the heat storage water tank 8 is communicated with the inlet of the micro-channel water-cooling heat exchanger 6 through a heat storage water tank outlet valve 10;
the outlet of the closed loop heat pipe evaporator 12 is communicated with the inlet of the closed loop heat pipe condenser 13 through a steam pipe valve 15; the outlet of the closed loop heat pipe condenser 13 is connected to the inlet of the closed loop heat pipe evaporator 12 through a return pipe valve 16.
In order to achieve the above object, the present invention further provides a heating method, using the heating system, comprising the steps of:
the solar energy photovoltaic power generation system 1 absorbs the illumination and converts the illumination into electric energy and heat energy, the solar storage battery 20 and the solar energy reverse control integrated machine 21 operate in a combined mode, and the electric energy is stored and transmitted to the user terminal 19; the heat energy is transferred to the evaporation end of the straight pipe type micro-channel heat pipe 5 attached to the back through the solar photovoltaic module substrate 3, the evaporation end of the straight pipe type micro-channel heat pipe 5 absorbs the heat of the solar photovoltaic module substrate 3 to form steam through the phase change of a refrigerant in the pipe, the steam rises to the condensation end and then carries out forced convection heat exchange with cold water in the micro-channel water-cooling heat exchanger 6, the heat of the cold water absorbed by the steam is changed into hot water, the hot water enters the heat storage water tank 8 through the water pump 7, the heat from the solar photovoltaic module substrate 3 is stored in the heat storage water tank 8, and the hot water in the heat storage water tank 8 is supplied to the user end 19 through the user end outlet valve 18 of the heat storage water tank;
the closed loop heat pipe evaporator 12 absorbs heat of the solar photovoltaic module substrate 3 through phase change of refrigerant in the pipe to form hot steam, the hot steam enters the closed loop heat pipe condenser 13, the fan 14 is arranged in the heating room 17 and connected to the hot steam outlet end of the closed loop heat pipe condenser 13, and the closed loop heat pipe condenser 13 is cooled through rotation of the fan and transmits the heat into the heating room 17;
preferably, in non-heating season, the steam pipe valve 15 and the liquid return pipe valve 16 are closed, the hot water storage tank inlet valve 9 and the hot water storage tank outlet valve 10 are opened, the hot water storage tank 8 supplies hot water to the user terminal 19, and the fan does not supply warm air to the heating room;
in heating season, the steam pipe valve 15 and the liquid return pipe valve 16 are opened, the hot water storage tank inlet valve 9 and the hot water storage tank outlet valve 10 are closed, the hot water storage tank 8 does not provide hot water to the user end 19, and the fan provides warm air to the heating room.
The technical conception of the system of the invention is as follows:
the solar photovoltaic photo-thermal system is adopted to provide hot water, electric energy and heating for a building, wherein the solar photovoltaic power generation system 1 can directly provide electric energy for a user, and meanwhile, two different types of heat pipes are combined with a solar photovoltaic module substrate to respectively realize the functions of heating water and heating in the form of forced water cooling and forced air cooling. In non-heating season, the system transmits heat through the straight pipe type heat pipe forced water cooling system 4 and stores the heat in the heat storage water tank 8; in a heating season, the system transmits heat into a room 17 through the closed loop heat pipe forced air cooling system 11, so that the heating purpose is achieved. The two sets of systems can be started and stopped through the valve without mutual influence, and different functions are realized in different seasons.
Compared with the prior art, the invention has the following beneficial effects:
1. compared with a hot water or heating system with single function, the invention can realize annual power supply, hot water supply in non-heating seasons and indoor heating in heating seasons, and realize system function diversification.
2. The heat exchange modes of the condensing ends of the two different heat pipes in the system are forced convection heat exchange, so that the system has a high heat exchange coefficient and improves the comprehensive photovoltaic and photo-thermal efficiency of the system.
3. The straight pipe type micro-channel heat pipes 5 and the closed loop heat pipe evaporators 12 are alternately arranged on the back of the solar photovoltaic module substrate 3 in parallel, the interval between opposite pipes is filled, the effect of acting as fins is achieved, and the arrangement mode improves the heat exchange capacity of the heat pipes while reasonably utilizing the space.
4. Compared with the traditional straight pipe type heat pipe, the heat exchange area of the micro-channel water-cooling heat exchanger 6 and the straight pipe type micro-channel heat pipe 5 is adjustable, and the larger heat exchange area is another advantage of improving the heat transfer capability.
Drawings
Fig. 1 is a schematic structural diagram of a heat pipe type photovoltaic photo-thermal water heating system capable of realizing forced air cooling and forced water cooling according to an embodiment of the present invention;
FIG. 2 is a plan view of a straight tube microchannel heat tube and closed loop heat tube evaporator alternately arranged in parallel;
FIG. 3 is a plan view of a closed loop heat pipe operating in a heating mode for a system according to an embodiment of the present invention;
FIG. 4 is a plan view of a straight tube heat pipe operating in hot water mode for a system according to an embodiment of the present invention;
in the figure, 1 is a solar photovoltaic power generation system, 2 is a solar cell array, 3 is a solar photovoltaic module substrate, 4 is a straight pipe type heat pipe forced water cooling system, 5 is a straight pipe type micro-channel heat pipe, 6 is a micro-channel water cooling heat exchanger, 7 is a water pump, 8 is a heat storage water tank, 9 is a heat storage water tank inlet valve, 10 is a heat storage water tank outlet valve, 11 is a closed loop heat pipe forced air cooling system, 12 is a closed loop heat pipe evaporator, 13 is a closed loop heat pipe condenser, 14 is a fan, 15 is a steam pipe valve, 16 is a liquid return pipe valve, 17 is a heating room, 18 is a heat storage water tank user end outlet valve, 19 is a user end, 20 is a solar storage battery, and 21 is a solar energy reverse control integrated machine.
Detailed Description
As shown in fig. 1, the multifunctional heat pipe type photovoltaic photo-thermal water heating system comprises a solar photovoltaic power generation system 1, a straight pipe type heat pipe forced water cooling system 4, a heat storage water tank 8, a closed loop heat pipe forced air cooling system 11, a heating room 17, a photoelectric storage solar storage battery 20 and a solar inverse control integrated machine 21;
the solar photovoltaic power generation system 1 is arranged outdoors, the solar photovoltaic power generation system 1 comprises a solar cell array 2 and a solar photovoltaic module substrate 3, the solar cell array 2 is pressed on the front surface of the solar photovoltaic module substrate 3 through a hot melt adhesive layer, solar energy is absorbed and converted to provide electric energy and heat energy for the system, a solar storage battery 20 is connected with the solar cell array 2, a solar inverse control integrated machine 21 is connected with the solar storage battery 20, and the solar storage battery 20 and the solar inverse control integrated machine 21 are combined to operate for storing the electric energy and conveying the electric energy to a user side 19;
the straight pipe type heat pipe forced water cooling system 4 comprises a straight pipe type micro-channel heat pipe 5, a micro-channel water cooling heat exchanger 6 and a water pump 7, wherein the straight pipe type micro-channel heat pipe 5 is provided with an evaporation end and a condensation end, the evaporation end of the straight pipe type micro-channel heat pipe 5 is pressed on the back surface of the solar photovoltaic module substrate 3 through a hot melt adhesive layer to exchange heat with the solar photovoltaic module substrate 3, the condensation end of the straight pipe type micro-channel heat pipe 5 is combined with the micro-channel water cooling heat exchanger 6 through a hot melt adhesive layer and exchanges heat with the micro-channel water cooling heat exchanger 6, the inside of the straight pipe type micro-channel heat pipe 5 is provided with a refrigerant, the evaporation end of the straight pipe type micro-channel heat pipe 5 is subjected to phase change of the refrigerant in the pipe, absorbing heat of the solar photovoltaic module substrate 3 to form steam, carrying out forced convection heat exchange with cold water in the micro-channel water-cooled heat exchanger 6 after the steam rises to a condensing end, changing the heat of the cold water absorbed by the steam into hot water, entering the hot water storage tank 8, storing the heat from the solar photovoltaic module substrate 3 in the hot water storage tank 8, connecting an outlet of the micro-channel water-cooled heat exchanger 6 to an inlet of the hot water storage tank 8 through the water pump 7, connecting an outlet of the hot water storage tank 8 to an inlet of the micro-channel water-cooled heat exchanger 6, and supplying the hot water in the hot water storage tank 8 to a user end 19 through the hot water storage tank user end outlet valve 18;
the closed loop heat pipe forced air cooling system 11 comprises a closed loop heat pipe evaporator 12, a closed loop heat pipe condenser 13 and a fan 14, wherein the closed loop heat pipe evaporator 12 is pressed on the back of the solar photovoltaic module substrate 3 through a hot melt layer and exchanges heat with the solar photovoltaic module substrate 3, the closed loop heat pipe condenser 13 and the fan 14 are fixed together and are arranged indoors, the positions of the closed loop heat pipe condenser 13 and the fan 14 are higher than those of the solar photovoltaic module substrate 3, a refrigerant is arranged in the closed loop heat pipe evaporator 12, the closed loop heat pipe evaporator 12 absorbs heat of the solar photovoltaic module substrate 3 through phase change of the refrigerant in the pipe to form hot steam, the hot steam enters the closed loop heat pipe condenser 13, the fan 14 is arranged in a heating room 17 and is connected to the tail end of a hot steam outlet of the closed loop heat pipe condenser 13, and the closed loop heat pipe condenser 13 is cooled through rotation of the fan and transfers the heat into the heating room 17.
The straight pipe type micro-channel heat pipe 5, the closed loop heat pipe evaporator 12, the closed loop heat pipe condenser 13 and the micro-channel water-cooling heat exchanger 6 all adopt micro-channel flat pipe structures as heat exchangers.
The straight pipe type micro-channel heat pipes 5 and the closed loop heat pipe evaporators 12 are alternately arranged on the back surface of the solar photovoltaic module substrate 3 in parallel, fill the interval of the opposite pipes and serve as fins.
The water pump 7 and the hot water storage tank 8 are installed outdoors.
The outlet of the micro-channel water-cooling heat exchanger 6 is connected with the inlet of the heat storage water tank 8 through the heat storage water tank inlet valve 9; the outlet of the heat storage water tank 8 is communicated with the inlet of the micro-channel water-cooling heat exchanger 6 through a heat storage water tank outlet valve 10;
the outlet of the closed loop heat pipe evaporator 12 is communicated with the inlet of the closed loop heat pipe condenser 13 through a steam pipe valve 15; the outlet of the closed loop heat pipe condenser 13 is connected to the inlet of the closed loop heat pipe evaporator 12 through a return pipe valve 16.
The embodiment also provides a heating method, which uses the system and comprises the following steps:
the solar energy photovoltaic power generation system 1 absorbs the illumination and converts the illumination into electric energy and heat energy, the solar storage battery 20 and the solar energy reverse control integrated machine 21 operate in a combined mode, and the electric energy is stored and transmitted to the user terminal 19; the heat energy is transferred to the evaporation end of the straight pipe type micro-channel heat pipe 5 attached to the back through the solar photovoltaic module substrate 3, the evaporation end of the straight pipe type micro-channel heat pipe 5 absorbs the heat of the solar photovoltaic module substrate 3 to form steam through the phase change of a refrigerant in the pipe, the steam rises to the condensation end and then carries out forced convection heat exchange with cold water in the micro-channel water-cooling heat exchanger 6, the heat of the cold water absorbed by the steam is changed into hot water, the hot water enters the heat storage water tank 8 through the water pump 7, the heat from the solar photovoltaic module substrate 3 is stored in the heat storage water tank 8, and the hot water in the heat storage water tank 8 is supplied to the user end 19 through the user end outlet valve 18 of the heat storage water tank;
the closed loop heat pipe evaporator 12 absorbs heat of the solar photovoltaic module substrate 3 through phase change of refrigerant in the pipe to form hot steam, the hot steam enters the closed loop heat pipe condenser 13, the fan 14 is arranged in the heating room 17 and connected to the hot steam outlet end of the closed loop heat pipe condenser 13, and the closed loop heat pipe condenser 13 is cooled through rotation of the fan and transmits the heat into the heating room 17;
in non-heating seasons, the steam pipe valve 15 and the liquid return pipe valve 16 are closed, the hot water storage tank inlet valve 9 and the hot water storage tank outlet valve 10 are opened, the hot water storage tank 8 supplies hot water to the user end 19, and the fan does not supply warm air to a heating room;
in heating season, the steam pipe valve 15 and the liquid return pipe valve 16 are opened, the hot water storage tank inlet valve 9 and the hot water storage tank outlet valve 10 are closed, the hot water storage tank 8 does not provide hot water to the user end 19, and the fan provides warm air to the heating room.
The system provided by the invention is convenient to install, is very suitable for being combined with a building, and can realize multifunctional output according to the illumination characteristics of different seasons so as to meet different requirements of users in the building.
The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many modifications may be made thereto by those of ordinary skill in the art without departing from the spirit of the invention and the scope of the appended claims.

Claims (4)

1. A multifunctional heat pipe type photovoltaic photo-thermal hot water heating system is characterized in that: the solar energy power generation system comprises a solar energy photovoltaic power generation system (1), a straight pipe type heat pipe forced water cooling system (4), a heat storage water tank (8), a closed loop heat pipe forced air cooling system (11), a heating room (17), a solar energy storage battery (20) of a photoelectric storage device and a solar energy reverse control integrated machine (21);
the solar photovoltaic power generation system (1) is arranged outdoors, the solar photovoltaic power generation system (1) comprises a solar cell array (2) and a solar photovoltaic module substrate (3), the solar cell array (2) is pressed on the front surface of the solar photovoltaic module substrate (3) through a hot melt adhesive layer, solar energy is absorbed and converted to provide electric energy and heat energy for the system, a solar storage battery (20) is connected with the solar cell array (2), a solar inverse control integrated machine (21) is connected with the solar storage battery (20), and the solar storage battery (20) and the solar inverse control integrated machine (21) are combined to operate and are used for storing the electric energy and conveying the electric energy to a user end (19);
the straight pipe type heat pipe forced water cooling system (4) comprises a straight pipe type micro-channel heat pipe (5), a micro-channel water cooling heat exchanger (6) and a water pump (7), wherein the straight pipe type micro-channel heat pipe (5) is provided with an evaporation end and a condensation end, the evaporation end of the straight pipe type micro-channel heat pipe (5) is pressed on the back surface of a solar photovoltaic module substrate (3) through a hot melt adhesive layer to perform heat exchange with the solar photovoltaic module substrate (3), the condensation end of the straight pipe type micro-channel heat pipe (5) is combined with the micro-channel water cooling heat exchanger (6) through a hot melt adhesive layer pressing mode and performs heat exchange with the micro-channel water cooling heat exchanger (6), and a refrigerant is arranged in the straight pipe type micro-channel heat pipe (5), the evaporation end of the straight pipe type micro-channel heat pipe (5) absorbs heat of the solar photovoltaic module substrate (3) to form steam through phase change of refrigerant in the pipe, the steam performs forced convection heat exchange with cold water in the micro-channel water-cooling heat exchanger (6) after rising to the condensation end, the heat of the cold water absorbed by the steam is changed into hot water to enter the heat storage water tank (8), the heat from the solar photovoltaic module substrate (3) is stored in the heat storage water tank (8), the outlet of the micro-channel water-cooling heat exchanger (6) is connected to the inlet of the heat storage water tank (8) through the water pump (7), the outlet of the heat storage water tank (8) is connected to the inlet of the micro-channel water-cooling heat exchanger (6), hot water in the heat storage water tank (8) is supplied to a user side (19) through a user side outlet valve (18) of the heat storage water tank;
the closed loop heat pipe forced air cooling system (11) comprises a closed loop heat pipe evaporator (12), a closed loop heat pipe condenser (13) and a fan (14), wherein the closed loop heat pipe evaporator (12) is pressed on the back of a solar photovoltaic module substrate (3) through a hot melt layer and exchanges heat with the solar photovoltaic module substrate (3), the closed loop heat pipe condenser (13) and the fan (14) are fixed together and are arranged indoors, the position of the closed loop heat pipe condenser (13) and the position of the fan (14) are higher than that of the solar photovoltaic module substrate (3), a refrigerant is arranged in the closed loop heat pipe evaporator (12), the closed loop heat pipe evaporator (12) absorbs heat of the solar photovoltaic module substrate (3) through phase change of the refrigerant in the pipe to form hot steam, the hot steam enters the closed loop heat pipe condenser (13), the fan (14) is arranged in a heating room (17) and is connected to the tail end of a hot steam outlet of the closed loop heat pipe condenser (13), and the closed loop heat pipe condenser (13) is cooled through rotation of the fan and transfers heat into the heating room (17);
the straight pipe type micro-channel heat pipes (5) and the closed loop heat pipe evaporators (12) are alternately arranged on the back of the solar photovoltaic module substrate (3) in parallel, fill the interval of the opposite pipes and serve as fins;
the straight pipe type micro-channel heat pipe (5), the closed loop heat pipe evaporator (12), the closed loop heat pipe condenser (13) and the micro-channel water-cooling heat exchanger (6) all adopt micro-channel flat pipe structures as heat exchangers;
the water pump (7) and the heat storage water tank (8) are arranged outdoors.
2. The multifunctional heat pipe type photovoltaic photo-thermal hot water heating system according to claim 1, wherein: the outlet of the micro-channel water-cooling heat exchanger (6) is connected with the inlet of the heat storage water tank (8) through the inlet valve (9) of the heat storage water tank; the outlet of the heat storage water tank (8) is communicated with the inlet of the micro-channel water-cooling heat exchanger (6) through a heat storage water tank outlet valve (10);
the outlet of the closed loop heat pipe evaporator (12) is communicated with the inlet of the closed loop heat pipe condenser (13) through a steam pipe valve (15); the outlet of the closed loop heat pipe condenser (13) is communicated with the inlet of the closed loop heat pipe evaporator (12) through a liquid return pipe valve (16).
3. A heating method using the system according to claim 1 or 2, characterized by comprising the steps of:
the solar energy photovoltaic power generation system (1) absorbs illumination and converts the illumination into electric energy and heat energy, the solar storage battery (20) and the solar energy reverse control integrated machine (21) operate in a combined mode, and electric energy is stored and is transmitted to the user side (19); the heat energy is transferred to the evaporation end of the straight pipe type micro-channel heat pipe (5) attached to the back surface through the solar photovoltaic module substrate (3), the evaporation end of the straight pipe type micro-channel heat pipe (5) absorbs the heat of the solar photovoltaic module substrate (3) to form steam through the phase change of a refrigerant in the pipe, the steam rises to the condensation end and then carries out forced convection heat exchange with cold water in the micro-channel water-cooling heat exchanger (6), the heat of the cold water absorbed by the steam is changed into hot water, the hot water enters the heat storage water tank (8) through the water pump (7), the heat from the solar photovoltaic module substrate (3) is stored in the heat storage water tank (8), and the hot water in the heat storage water tank (8) is supplied to the user end (19) through the user end outlet valve (18) of the heat storage water tank;
the closed loop heat pipe evaporator (12) absorbs heat of the solar photovoltaic module substrate (3) through phase change of refrigerant in the pipe to form hot steam, the hot steam enters the closed loop heat pipe condenser (13), the fan (14) is arranged in the heating room (17) and connected to the tail end of a hot steam outlet of the closed loop heat pipe condenser (13), and the closed loop heat pipe condenser (13) is cooled through rotation of the fan and transmits the heat into the heating room (17).
4. A heating method according to claim 3, wherein: in non-heating seasons, the steam pipe valve (15) and the liquid return pipe valve (16) are closed, the heat storage water tank inlet valve (9) and the heat storage water tank outlet valve (10) are opened, the heat storage water tank (8) provides hot water for the user terminal (19), and the fan does not provide warm air for a heating room;
in heating season, the steam pipe valve (15) and the liquid return pipe valve (16) are opened, the heat storage water tank inlet valve (9) and the heat storage water tank outlet valve (10) are closed, the heat storage water tank (8) does not provide hot water to the user end (19), and the fan provides warm air to a heating room.
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