CN107062628B - Integral flat-plate solar photo-thermal photoelectric system - Google Patents
Integral flat-plate solar photo-thermal photoelectric system Download PDFInfo
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- 238000010248 power generation Methods 0.000 claims abstract description 34
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- 239000011521 glass Substances 0.000 claims description 20
- 238000000576 coating method Methods 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 4
- 239000004925 Acrylic resin Substances 0.000 claims description 3
- 229920000178 Acrylic resin Polymers 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S10/00—Solar heat collectors using working fluids
- F24S10/70—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits
- F24S10/74—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits the tubular conduits are not fixed to heat absorbing plates and are not touching each other
- F24S10/742—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits the tubular conduits are not fixed to heat absorbing plates and are not touching each other the conduits being parallel to each other
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S20/00—Solar heat collectors specially adapted for particular uses or environments
- F24S20/40—Solar heat collectors combined with other heat sources, e.g. using electrical heating or heat from ambient air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
- F24S80/30—Arrangements 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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N11/00—Generators or motors not provided for elsewhere; Alleged perpetua mobilia obtained by electric or magnetic means
- H02N11/002—Generators
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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
- H02S10/00—PV power plants; Combinations of PV energy systems with other systems for the generation of electric power
- H02S10/10—PV power plants; Combinations of PV energy systems with other systems for the generation of electric power including a supplementary source of electric power, e.g. hybrid diesel-PV energy systems
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/44—Heat exchange systems
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Photovoltaic Devices (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention discloses an integral flat-plate solar photo-thermal photovoltaic system, which comprises a flat-plate solar collector, a solar photovoltaic power generation plate, a water tank, a circulating water pump, a storage battery, an inverter and a controller, wherein the flat-plate solar collector is connected with the solar photovoltaic power generation plate; the flat-plate solar collector is provided with a tubular heat absorber, a water inlet of the tubular heat absorber is connected with the water tank through a first pipeline, and an outlet of the tubular heat exchanger is connected with the water tank through a second pipeline; the circulating water pump is arranged on the first pipeline and is electrically connected with the controller; the integrated flat-plate solar photo-thermal photovoltaic system also comprises a thermoelectric generation system, wherein the thermoelectric generation system comprises a cold water circulation system, a third pipeline and a thermoelectric generation sheet, and the third pipeline is connected between the first pipeline and the second pipeline; the hot end of the thermoelectric generation piece is connected with the third pipeline, and the cold end of the thermoelectric generation piece is connected with the cold water circulating system. The integrated flat-plate solar photothermal photovoltaic system has high utilization efficiency of solar energy, and can meet the requirement of users on hot water in rainy days.
Description
Technical Field
The invention relates to the field of water heating facilities, in particular to an integral flat-plate solar photo-thermal photovoltaic system.
Background
With the increasing awareness of energy conservation, environmental protection and protection of non-renewable natural resources such as petroleum, coal, natural gas, etc., solar water heaters are increasingly used. The early solar water heaters mostly use a structure form of a vacuum tube (also called as a photothermal conversion glass tube), and the solar water heaters of the structure form can be found in China patent literature in a large number, which is just as exemplified by an anti-freezing solar water heater recommended by CN1027661C, an all-plastic integrated solar water heater introduced by CN1399110A, a covered hail-proof solar water heater provided by CN2879040Y, an anti-hail solar water heater with a movable cover plate disclosed by CN2886430Y, and the like. However, the solar water heater with the vacuum tube structure is troublesome to install, and the vacuum tubes need to be installed one by one on the use site, so the installation process is long; the vacuum tubes are fragile and inconvenient to replace, once any vacuum tube in a group of vacuum tubes is burst, water in the water tank can be drained, particularly when the solar water heater is provided with the automatic water inlet control device, a large amount of water sources can be wasted, and the automatic water inlet control device can only identify the water shortage in the water tank but can not identify the reason of the water shortage; the installation place is selected; most are installed on roofs; high maintenance probability, high use cost, and the like.
With the development of solar photo-thermal technology, a solar water heater adopting a flat plate type heat collector appears, and the solar water heater adopting the structure can greatly improve the utilization efficiency of solar energy. At present, the solar water heater adopting the structure has a large number of applications in Chinese patent documents. For example, the flat-plate solar heat collector with low heat loss disclosed in CN200810018507.4, the integrated flat-plate solar heat collector disclosed in CN200910024965.3, the fully-sealed anti-freezing waterproof heat-preservation flat-plate solar heat collector disclosed in CN201210202313.6, the wall-mounted flat-plate high-efficiency solar water heater disclosed in CN200810018505.5, the mounting structure thereof, and the like. Without doubt, as the vacuum glass tube heating type solar water heater has the defects mentioned above, it is becoming increasingly heavy and the market share of the solar water heater is increasing in recent years with respect to the vacuum tube structure. However, both solar photovoltaic modules and flat-plate solar collectors have a problem of being affected by weather, and particularly, in weather such as rainy or snowy weather without solar radiation, it is difficult or even impossible to satisfy the requirement of people for using hot water, and there is no reference to the patent and non-patent documents that have been published to remedy this defect.
Disclosure of Invention
The invention aims to overcome the problems in the prior art and provides an integrated flat-plate solar water heater photo-thermal photovoltaic system which can help to avoid the problem that the requirement of providing hot water is difficult to meet due to the influence of illumination and can improve the utilization rate of solar energy.
In order to achieve the technical purpose and achieve the technical effect, the invention is realized by the following technical scheme:
an integral flat-plate solar photo-thermal photovoltaic system comprises a flat-plate solar collector, a solar photovoltaic power generation plate, a water tank, a circulating water pump, a storage battery, an inverter and a controller; the solar photovoltaic power generation plate is positioned at one end of the flat-plate solar collector and is jointed with the end part of the flat-plate solar collector; a water inlet of the flat-plate solar collector is connected with the water tank through a first pipeline, and a water outlet of the flat-plate solar collector is connected with the water tank through a second pipeline; the solar photovoltaic power generation board is electrically connected with the storage battery, the storage battery is electrically connected with the inverter, and the inverter is electrically connected with the controller; the circulating water pump is arranged on the first pipeline and is electrically connected with the controller;
the integrated flat-plate solar photothermal photovoltaic system further comprises a temperature difference power generation system, wherein the temperature difference power generation system comprises a cold water circulation system, a third pipeline and a temperature difference power generation sheet, and the third pipeline and the temperature difference power generation sheet are connected between the first pipeline and the second pipeline; the hot end of the thermoelectric generation piece is connected with a third pipeline, and the cold end of the thermoelectric generation piece is connected with a cold water circulating system.
In summer with strong solar radiation, the demand of users for hot water is not high, but a large amount of circulating hot water is generated in the water tank every day, so that the waste of energy is wasted. Therefore, the invention converts the heat of the hot water heated by the flat-plate solar collector into electric energy to be stored by arranging the temperature difference power generation system. The stored electric energy can be used for heating water in the water tank in rainy days or supplying household electricity, so that the household electricity consumption expense is saved, the energy waste is reduced, and the utilization rate of solar energy is greatly improved.
Preferably, the flat-plate solar collector includes a frame body formed in a rectangular frame structure by a pair of longitudinal frames corresponding to each other and a pair of lateral frames corresponding to each other, a first glass cover plate and a second glass cover plate located at an upper portion and a lower portion of the frame body, respectively, and engaged with the frame body, and a heat absorbing mechanism located inside the frame body and engaged with the frame body; a first sealing cavity and a second sealing cavity are formed between the first glass cover plate and the heat absorption mechanism, and between the second glass cover plate and the heat absorption mechanism, respectively. In this scheme, through setting up first glass apron and second glass apron in the heat absorption mechanism outside for heat absorption mechanism is located first seal chamber and second seal chamber, because first seal chamber and second seal chamber temperature are very high, has formed the effect of similar solar greenhouse, the heat dissipation of dull and stereotyped solar collector self that has significantly reduced.
Preferably, the heat absorbing mechanism comprises a first heat absorbing plate, a second heat absorbing plate and a heat absorbing flow channel; the first heat absorption plate and the second heat absorption plate are embedded in the frame body, a heat absorption cavity is formed between the first heat absorption plate and the second heat absorption plate, and the heat absorption flow channel is arranged in the heat absorption cavity. The first pipeline and the second pipeline are respectively communicated with the heat absorption flow channel through a water inlet and a water outlet.
Preferably, the first heat absorbing plate and the second heat absorbing plate are both plated with heat absorbing coatings, and the heat absorbing coatings are formed by spraying 50-70wt% of acrylic resin, 10-30wt% of nano metal titanium and 10-30wt% of nano aluminum oxide. The heat absorption coating can increase the absorption efficiency of solar energy.
Preferably, two ends of the third pipeline are connected to the first pipeline and the second pipeline through a three-way pipe.
Preferably, the first pipeline and the second pipeline are respectively provided with a first valve and a second valve, and two ends of the third pipeline are respectively provided with a third valve and a fourth valve; the third pipeline is also provided with a cold water inlet. After the temperature difference power generation system is started, the cold water circulating system starts to work, cold water enters the third pipeline through the cold water inlet and then circulates between the solar heat collector and the third pipeline, in the process, the cold water is heated, and the two ends of the temperature difference power generation pieces generate temperature difference potential, so that current is continuously and outwards output. After the work is finished, the temperature of the circulating water in the third pipeline can reach 50-70 ℃, and the circulating water can directly enter the water tank through the water outlet, so that the requirement of a user on hot water can be met.
Preferably, the power supply output port of the thermoelectric generation piece is electrically connected with the storage battery. The current output by the thermoelectric generation piece can be directly output to a storage battery for storage, so that the thermoelectric generation piece is convenient to use in the future.
Preferably, the flat-plate solar collector and the solar photovoltaic power generation plate form a certain angle with the horizontal plane, and the angle can be adjusted. Therefore, the flat-plate solar collector and the solar photovoltaic power generation plate can receive the radiation of sunlight to the maximum extent, and the utilization rate of solar energy is improved.
Preferably, the inner wall of the water tank is provided with a heat-insulating layer so as to improve the heat-insulating capacity of the water tank and slow down the cooling speed of hot water in the water tank.
Preferably, the top of the water tank is provided with a safety valve, the lower side of the water tank is provided with a sewage discharge outlet, the upper part of the side part is provided with a hot water outlet, and the lower part of the side part is provided with a cold water inlet.
Preferably, be equipped with electric heater and temperature sensor in the water tank, electric heater and temperature sensor all with controller electric connection, the controller can be according to temperature sensor automatic control electric heater's start-up or closing. The purpose of additionally arranging the electric heater and the temperature sensor is to solve the problem of hot water supply in continuous rainy days, when the water temperature in the water tank is lower than a preset value, the electric heater is started to heat, when the water temperature exceeds the preset value of the temperature, the electric heater is automatically closed, the whole process is automatically controlled by the controller, and the influence of the solar water heater on hot water supply under the condition of insufficient illumination is made up.
The beneficial effects of the invention are:
1. according to the integrated flat-plate solar photothermal photovoltaic system, the temperature difference power generation system is arranged, heat of hot water heated by the flat-plate solar collector is converted into electric energy to be stored, and the stored electric energy can be used for heating water in the water tank in rainy days or supplying household electricity, so that the household electricity consumption expense is saved, the energy waste is reduced, and the utilization rate of solar energy is greatly improved.
2. The integrated flat-plate solar photothermal photovoltaic system has high utilization efficiency of solar energy, and can meet the requirement of users on hot water in rainy days.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to make the technical solutions of the present invention practical in accordance with the contents of the specification, the following detailed description is given of preferred embodiments of the present invention with reference to the accompanying drawings. The detailed description of the present invention is given in detail by the following examples and the accompanying drawings.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of an embodiment according to the present invention;
fig. 2 is a schematic structural view of the flat-plate solar collector in fig. 1;
wherein: 1. a flat-plate solar collector; 11. a frame body; 121. a first glass cover plate; 122. a second glass cover plate; 131. a first sealed chamber; 132. a second sealed chamber; 141. a first heat absorption plate; 142. a second absorber plate; 151. a first heat-absorbing coating layer; 152. a second heat absorbing coating; 16. a heat absorption cavity; 17. a heat absorption flow channel; 18. a water inlet; 19. a water outlet; 2. a solar photovoltaic power generation panel; 21. a storage battery; 22. an inverter; 23. a controller; 3. a first pipeline; 31. a water circulating pump; 32. a first valve; 4. a second pipeline; 41. a second valve; 5. a third pipeline; 51. a third valve; 52. a fourth valve; 53. a cold water inlet; 54. a three-way pipe; 6. a water tank; 61. an electric heater; 62. a temperature sensor; 63. a hot water outlet; 64. a cold water intake; 65. a sewage draining outlet; 66. a safety valve; 7. a cold water circulation system; 8. thermoelectric power generation piece.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention discloses an integral flat-plate solar photo-thermal photovoltaic system which can be beneficial to avoiding the problem that the requirement of providing hot water is difficult to meet due to the influence of illumination and can improve the utilization rate of solar energy. Referring to fig. 1, the integrated flat-plate solar photothermal photovoltaic system of the present invention includes a flat-plate solar collector 1, a solar photovoltaic panel 2, a thermoelectric power generation system, a water tank 6, a circulating water pump 31, a storage battery 21, an inverter 22, and a controller 23.
The solar photovoltaic power generation plate 2 is positioned at one end of the flat-plate solar collector 1 and is jointed with the end part of the flat-plate solar collector 1; the solar photovoltaic power generation panel 2 and the flat-plate solar collector 1 form a whole, but the two can respectively play roles; when the device is installed, the two form a certain angle with the horizontal plane, and the angle can be adjusted. Therefore, the flat-plate solar collector 1 and the solar photovoltaic power generation plate 2 can receive the radiation of sunlight to the maximum extent, and the utilization rate of solar energy is improved.
The solar photovoltaic power generation panel 2 is electrically connected with the storage battery 21, the storage battery 21 is electrically connected with the inverter 22, and the inverter 22 is electrically connected with the controller 23; the electric energy generated by the solar photovoltaic power generation panel 2 is stored through the storage battery 21; when the electricity is needed, the inverter 22 converts the direct current in the battery 21 into alternating current, which can be used as household electricity.
Referring to fig. 2, the flat-plate solar collector 1 includes a frame 11 formed by a pair of longitudinal frames corresponding to each other and a pair of transverse frames corresponding to each other to form a rectangular frame structure, a first glass cover 121 and a second glass cover 122 respectively located at the upper portion and the lower portion of the frame 11 and engaged with the frame 11, and a heat absorbing mechanism located inside the frame 11 and engaged with the frame 11; a first sealed cavity 131 and a second sealed cavity 132 are formed between the first glass cover plate 121 and the second glass cover plate 122 and the heat absorbing mechanism, respectively. In this scheme, through setting up first glass apron 121 and second glass apron 122 in the heat absorption mechanism outside for the heat absorption mechanism is arranged in first sealed chamber 131 and second sealed chamber 132, because first sealed chamber 131 and second sealed chamber 132 temperature are very high, has formed the effect of similar solar greenhouse, the heat dissipation of the dull and stereotyped solar collector 1 self that has significantly reduced. In the present embodiment, the heat absorbing mechanism includes a first heat absorbing plate 141, a second heat absorbing plate 142, and a heat absorbing flow passage 17; the first heat absorbing plate 141 and the second heat absorbing plate 142 are both fitted to the frame 11, a heat absorbing chamber 16 is formed between the first heat absorbing plate 141 and the second heat absorbing plate 142, and the heat absorbing flow path 17 is provided in the heat absorbing chamber 16. The first heat absorption coating 151 and the second heat absorption coating 152 are respectively plated on the first heat absorption plate 141 and the second heat absorption plate 142, and the heat absorption coatings are formed by spraying 50-70wt% of acrylic resin, 10-30wt% of nano metal titanium and 10-30wt% of nano aluminum oxide, and can increase the absorption efficiency of the flat-plate solar collector 1 on solar energy.
The water inlet 18 and the water outlet 19 of the flat-plate solar collector 1 are respectively connected with the water tank 6 through the first pipeline 3 and the second pipeline 4, and the circulating water pump 31 is arranged on the first pipeline 3. The inner wall of the water tank 6 is provided with a heat preservation layer to improve the heat preservation capability of the water tank 6 and slow down the cooling speed of the hot water in the water tank 6. Preferably, the top of the water tank 6 is provided with a safety valve 66, the lower side thereof is provided with a drain outlet 65, the upper side thereof is provided with a hot water outlet 63, and the lower side thereof is provided with a cold water inlet 64. Preferably, an electric heater 61 and a temperature sensor 62 are arranged in the water tank 6, the electric heater 61 and the temperature sensor 62 are both electrically connected with the controller 23, and the controller 23 can automatically control the on or off of the electric heater 61 according to the temperature sensor 62. The electric heater 61 and the temperature sensor 62 are additionally arranged to solve the problem of hot water supply in continuous rainy days, when the water temperature in the water tank 6 is lower than a preset value, the electric heater 61 starts heating, when the water temperature exceeds the preset value of the temperature, the electric heater 61 is automatically closed, the whole process is automatically controlled by the controller 23, and the influence of the solar water heater on hot water supply under the condition of insufficient illumination is made up.
The thermoelectric power generation system comprises a cold water circulating system 7, a third pipeline 5 connected between the first pipeline 3 and the second pipeline 4 and a thermoelectric power generation sheet 8; the hot end of the thermoelectric generation piece 8 is connected with the third pipeline 5, and the cold end of the thermoelectric generation piece 8 is connected with the cold water circulating system 7. Preferably, the third pipe 5 is connected at both ends to the first pipe 3 and the second pipe 4 by a tee 54. The power supply output port of the thermoelectric generation piece 8 is electrically connected with the storage battery 21. The current output by the thermoelectric generation piece 8 can be directly output to the storage battery 21 for storage, so that the thermoelectric generation piece is convenient to use in the future.
The first pipeline 3 and the second pipeline 4 are respectively provided with a first valve 32 and a second valve 41, and both ends of the third pipeline 5 are respectively provided with a third valve 51 and a fourth valve 52; the third pipeline 5 is also provided with a cold water inlet 53. Preferably, the first valve 32, the second valve 41, the third valve 51 and the fourth valve 52 are all controlled by the controller 23. After the temperature difference power generation system is started, the cold water circulating system 7 starts to work; then the controller 23 closes the first valve 32 and the second valve 41, opens the third valve 51 and the fourth valve 52, and then the cold water enters the third pipeline 5 through the cold water inlet 53 and circulates between the flat-plate solar collector 1 and the third pipeline 5, in the process, the cold water is heated, and the temperature difference potential is generated at the two ends of the thermoelectric generation piece 8, so that the current is continuously output outwards. After the work is finished, the temperature of the circulating water in the third pipeline 5 can reach 50-70 ℃, the controller 23 closes the third valve 51 and the fourth valve 52 and opens the first valve 32 and the second valve 41, so that the circulating water enters the water tank 6, and the requirement of a user on hot water can be met.
In summer with strong solar radiation, the demand of users for hot water is not high, but a large amount of circulating hot water is generated in the water tank every day, so that the waste of energy is wasted. Therefore, the invention converts the heat of the hot water heated by the flat-plate solar collector into electric energy to be stored by arranging the temperature difference power generation system. The stored electric energy can be used for heating water in the water tank in rainy days or supplying household electricity, so that the household electricity consumption expense is saved, the energy waste is reduced, and the utilization rate of solar energy is greatly improved.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. An integral flat-plate solar photo-thermal photovoltaic system comprises a flat-plate solar collector, a solar photovoltaic power generation plate, a water tank, a circulating water pump, a storage battery, an inverter and a controller; the solar photovoltaic power generation plate is positioned at one end of the flat-plate solar collector and is jointed with the end part of the flat-plate solar collector; the water inlet of the flat-plate solar collector is connected with the water tank through a first pipeline, and the water outlet of the flat-plate solar collector is connected with the water tank through a second pipeline; the solar photovoltaic power generation board is electrically connected with the storage battery, the storage battery is electrically connected with the inverter, and the inverter is electrically connected with the controller; the circulating water pump is arranged on the first pipeline and is electrically connected with the controller;
the integrated flat-plate solar photo-thermal photovoltaic system is characterized by further comprising a temperature difference power generation system, wherein the temperature difference power generation system comprises a cold water circulation system, a third pipeline and a temperature difference power generation piece, and the third pipeline and the temperature difference power generation piece are connected between the first pipeline and the second pipeline; the hot end of the thermoelectric generation piece is connected with a third pipeline, and the cold end of the thermoelectric generation piece is connected with a cold water circulating system; the power supply output port of the thermoelectric generation piece is electrically connected with the storage battery;
the flat-plate solar collector comprises a frame body which is formed into a rectangular frame structure by matching a pair of longitudinal frames corresponding to each other with a pair of transverse frames corresponding to each other, a first glass cover plate and a second glass cover plate which are respectively positioned at the upper part and the lower part of the frame body and matched with the frame body, and a heat absorption mechanism which is positioned in the frame body and matched with the frame body; a first sealing cavity and a second sealing cavity are respectively formed between the first glass cover plate and the heat absorption mechanism and between the second glass cover plate and the heat absorption mechanism; the heat absorption mechanism comprises a first heat absorption plate, a second heat absorption plate and a heat absorption flow channel; the first heat absorption plate and the second heat absorption plate are embedded on the frame body, a heat absorption cavity is formed between the first heat absorption plate and the second heat absorption plate, and the heat absorption flow channel is arranged in the heat absorption cavity; the first heat absorption plate and the second heat absorption plate are both plated with heat absorption coatings, and the heat absorption coatings are formed by spraying 50-70wt% of acrylic resin, 10-30wt% of nano metal titanium and 10-30wt% of nano aluminum oxide.
2. The integral flat panel solar photothermal photovoltaic system of claim 1 wherein the third tubing is connected at both ends to the first tubing and the second tubing by a tee.
3. The integrated flat panel solar photothermal photovoltaic system of claim 2 wherein the first and second conduits have a first and second valve, respectively, and the third conduit has a third and fourth valve, respectively, at each end; the third pipeline is also provided with a cold water inlet.
4. The integral flat panel solar photothermal photovoltaic system of claim 1 wherein the flat panel solar collector and the solar photovoltaic panel are both at an angle to the horizontal, and wherein the angle is adjustable.
5. The integrated flat panel solar photothermal photovoltaic system of claim 1 wherein the inner wall of the water tank is provided with an insulating layer.
6. The integrated flat panel solar photothermal photovoltaic system according to claim 1 wherein said water tank has a safety valve at the top, a drain outlet at the lower side, a hot water outlet at the upper side of the side, and a cold water inlet at the lower side.
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| CN111119329A (en) * | 2020-01-13 | 2020-05-08 | 西藏湛恩新能源科技有限公司 | Solar thermoelectric system for sunlight room and sunlight room with same |
| CN111919944A (en) * | 2020-09-14 | 2020-11-13 | 慧生能源科技有限公司 | Photo-thermal integrated hydrogen-rich cold tea machine |
| CN113949341A (en) * | 2021-09-30 | 2022-01-18 | 青岛能安恒信科技有限公司 | Solar photo-thermal utilization system |
| CN114087792A (en) * | 2021-11-18 | 2022-02-25 | 中国十九冶集团有限公司 | Method for supplying hot water by solar energy for constructing temporary building board house |
| CN114413313A (en) * | 2021-12-18 | 2022-04-29 | 嘉寓光能科技(阜新)有限公司 | Household high-efficiency multipurpose solar power generation heating system |
| US20240230162A1 (en) * | 2023-01-11 | 2024-07-11 | Great American Merchandise & Events, Llc | Solar powered water heater |
| CN116538692B (en) * | 2023-06-28 | 2023-09-01 | 江苏龙腾工程设计股份有限公司 | Photovoltaic power generation and solar water heater integrated system for rural building |
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