CN115700317A - Roof type photovoltaic photo-thermal energy storage system and method - Google Patents
Roof type photovoltaic photo-thermal energy storage system and method Download PDFInfo
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- CN115700317A CN115700317A CN202211377721.5A CN202211377721A CN115700317A CN 115700317 A CN115700317 A CN 115700317A CN 202211377721 A CN202211377721 A CN 202211377721A CN 115700317 A CN115700317 A CN 115700317A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/10—Photovoltaic [PV]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/20—Solar thermal
Abstract
The invention relates to a roof type photovoltaic photo-thermal energy storage system and a method, wherein the system comprises a roof plate, the roof plate comprises a base layer, a heat preservation water tank, a composite heat insulation layer and an outer tile layer which are fixedly connected, and a photo-thermal plate and a photo-electric plate are laid on the outer tile layer; the phase-change material is arranged in the heat-preservation water tank, the first circulating pump is used for conveying liquid in the heat-preservation water tank to the photo-thermal plate, the photo-thermal plate is used for heating the liquid conveyed to the photo-thermal plate by utilizing light energy and returning the heated liquid to the heat-preservation water tank, the photoelectric plate is used for converting the light energy into electric energy, and the storage battery is used for storing the electric energy; the inverter inverts the electric energy of the storage battery into alternating current and then combines the alternating current with valley electricity to provide electric energy for the electric water heating device and the building, and the electric water heating device heats the liquid in the heat preservation water tank; the invention fully utilizes the photovoltaic photo-thermal and valley-current of limited roof area to be organically combined and used through phase change energy storage, thereby achieving the purposes of completely meeting the building energy consumption, occupying no floor space and developing the building roof utilization space.
Description
Technical Field
The invention relates to the technical fields of energy storage and supply system technology, roof structure technology and the like, in particular to a roof type photovoltaic photo-thermal energy storage system and method.
Background
Solar energy is rich renewable energy, can provide photoelectricity and photothermal to solve the problems of building power supply, hot water supply, heating, drying and the like, can not meet the building energy requirement only by solar power generation or heat collection covered by the existing building roof, is restricted by the building site area and environmental climate, can not supply energy continuously, and is also subjected to grid-connected output, so that the pressure of a power company is increased, and the external output also has electric quantity loss; the photovoltaic power generation aims at self-absorption, is ideally self-built and self-used, and the heat supply of the photovoltaic photo-thermal power generation in the market is not affected by weather, and most of the photovoltaic power generation in the market is in electric grid connection; solar water heaters and the like are adopted in the market, are seriously influenced by weather and night, can not continuously supply hot water for users all the year round and can not meet the requirements of heating and drying; the building uses no electricity, hot water, heating, drying and the like, and the roof area of each building object is limited, so that the heat energy consumption of the building cannot be met. The space of each building is limited, and the energy supply equipment occupies the floor space, which is not economical and beautiful. Most of the photovoltaic cell panels and the solar-thermal panels in the market are erected on roofs, a large amount of area of the roofs is occupied on both plane roofs and inclined roofs, lighting is affected, the original waterproof and heat preservation are damaged, the construction cost is increased when the supports are constructed on the roofs, the construction requirements are not met, and the attractiveness of the buildings and urban and rural areas is seriously affected; most building roofs are plane roofs, the traditional photovoltaic photo-thermal erection is adopted on the roofs, the attractiveness is influenced, the same roof area is occupied, the use value of roof space is not exerted, and the roof space is wasted.
Disclosure of Invention
The invention provides a roof type photovoltaic photo-thermal energy storage system and method, aiming at solving the technical problems that the limited roof area of a building cannot be fully utilized to obtain solar energy, meanwhile, the solar energy cannot be continuously supplied and cannot completely meet the energy requirement of the building, solar equipment occupies a large ground surface space, a roof is idle and the like in the prior art.
The technical scheme for solving the technical problems is as follows:
a roof type photovoltaic photo-thermal energy storage system comprises a roof plate, wherein the roof plate sequentially comprises a base layer, a heat preservation water tank, a composite heat insulation layer and an outer tile layer from bottom to top, and a photo-thermal plate and a photo-electric plate are paved on the outer tile layer; the system also comprises a first circulating pump, a second circulating pump, a storage battery and an inverter; the interior of the heat-preservation water tank is of a cavity structure, and an electric water heating device is fixedly arranged in the inner cavity of the heat-preservation water tank; the heat-preservation water tank is connected with a phase-change energy storage device, a liquid inlet of the phase-change energy storage device is respectively communicated with a liquid outlet of the light and heat plate and a liquid outlet of the electric water heating device, and a liquid outlet of the phase-change energy storage device is communicated with an inner cavity of the heat-preservation water tank;
the heat-preservation water tank is used for storing liquid;
the first circulating pump is used for conveying the liquid in the heat preservation water tank to the light and heat plate;
the photo-thermal plate is used for heating the liquid conveyed to the photo-thermal plate by utilizing light energy, and returning the heated liquid to the heat-preservation water tank after passing through the phase-change energy storage device;
the photoelectric panel is used for converting light energy into electric energy;
the storage battery is used for storing the electric energy converted by the photoelectric panel and the off-peak electricity of the power grid;
the inverter inverts the electric energy stored in the storage battery into alternating current and provides electric energy for the building by using the alternating current;
the second circulating pump is used for conveying the liquid in the heat-preservation water tank to the liquid inlet of the electric water heating device;
the electric water heating device is used for heating the liquid conveyed to the liquid inlet of the electric water heating device by utilizing alternating current inverted by the inverter and/or off-peak electricity of a power grid, and returning the heated liquid to the heat-preservation water tank after passing through the phase-change energy storage device;
the phase change energy storage device is used for storing the heat energy of the liquid passing through the phase change energy storage device or releasing the heat energy to the liquid passing through the phase change energy storage device.
The invention has the beneficial effects that: the heat storage type heat preservation water tank, the photo-thermal plate and the photoelectric plate are arranged in the roof structure, so that the energy storage system can be integrated in the roof building structure to form a new roof structure mode, the heat generated by photo-thermal, valley-electricity and redundant photoelectricity can be stored beneficially, the floor area and the using space of the building are not occupied, and the building utilization space is improved; simultaneously, regard light and heat board and photoelectricity board as building roof structure's part, the green resource advantage of make full use of roof solar energy compares with the tradition with solar cell panel or light and heat board as the additional set setting on the roof, can lay light and heat board and photoelectricity board on the limited roof rule again vividly. The novel structural roof is formed by the energy storage device and the solar panel, is used for erecting the roof of a light steel house on a newly-built or reconstructed roof and the top of the existing flat house, is beneficial to organically combining and using photovoltaic photo-thermal and valley-current which fully utilize limited roof area, and achieves the purposes of completely meeting building energy consumption, not occupying floor space and developing building roof utilization space. According to building power supply, heat supply water, heat supply, stoving etc. with can the actual need assist simultaneously on the building roof and establish reasonable photoelectric panel and light and heat board, be of value to balanced building power consumption and with the hot demand, make full use of roof solar energy does not cause the energy extravagant. Lay photovoltaic board and light and heat board in building roof surface and be favorable to reducing support investment cost, it erects photoelectricity board and light and heat board to change traditional roof, ugly unsightly, fuse photovoltaic light and heat board in building roof surface, agree with the roof is perfect, building aesthetics has, safety, energy-conservation, productivity, advantages such as environmental protection health, the function of balanced roof is with pleasing to the eye, both satisfy the functional requirement of photovoltaic power generation thermal-arrest, compromise the basic function demand of building simultaneously, it is integrated with the building integration to realize photovoltaic light and heat square matrix, be of value to beautify building and city scenery. The phase-change energy storage device is arranged in the heat-preservation water tank, so that the phase-change material in the phase-change energy storage device can be used for storing the liquid heat energy heated by the optical hot plate and the electric water heating device, and the heat stored by the phase-change material in the phase-change energy storage device can be used for heating the liquid in the heat-preservation water tank. Set up the electric water heater in the heat preservation water tank and can utilize the low ebb electricity to heat the liquid in the heat preservation water tank, combine to be of value to the heat and the photoelectricity that store photovoltaic light and heat production, the heat of ebb electricity conversion through magnetoelectric phase change energy storage and commercial power, form self-absorption, complementary use, be favorable to satisfying the building heat supply water completely, supply the heating installation, green can the demand with such as stoving, be favorable to not occupying building surface area and usage space, also play the heat-insulated heat retaining effect in winter in summer simultaneously.
The electric water heater further comprises a controller, wherein the controller is used for providing electric energy for the electric water heater and a building by utilizing the low-ebb electricity of a power grid and the alternating current inverted by the inverter.
The beneficial effect who adopts above-mentioned further scheme is that, through utilizing the millet electricity to supply power for electric water heating device, can reduce the power consumption of peak electricity period, electric water heating device utilizes the millet electricity to heat the liquid heating in the holding water box to through phase change energy memory to heat energy storage improvement peak valley period utilization ratio of electric energy, improve energy utilization. The liquid in the heat-insulating water tank is a carrier of photo-thermal, photoelectric, valley-electricity conversion heat, is also a carrier object of storage materials for storing and releasing heat, and can play a certain role in storing heat energy.
Further, the outer wall of the heat preservation water tank is coated with antirust heat insulation paint.
The beneficial effect who adopts above-mentioned further scheme is that, can further reduce holding water box's heat loss through scribbling rust-resistant thermal-insulated lacquer outside holding water box, improves holding water box's heat preservation effect.
Further, a waterproof permeable film layer and a water-guiding strip layer are sequentially arranged between the heat-preservation water tank and the composite heat-insulation layer from top to bottom; and a corrosion-proof wood Gui Wa strip layer is arranged between the composite heat insulation layer and the outer tile layer.
Further, the base layer is a concrete layer or a steel frame structure layer.
Further, the outer tile layer is a ceramic tile or an aluminum tile.
Further, the photoelectric plate and the photoelectric plate form a photovoltaic photoelectric plate with an integrated structure.
The beneficial effect who adopts above-mentioned further scheme is, photovoltaic light and heat board through setting up integral structure, not only the light and heat board is favorable to improving photoelectric generating efficiency, still can prolong the life of photovoltaic board, more importantly can utilize photovoltaic light and heat board to carry out solar energy power generation and simultaneously can also utilize solar energy to supply heat, balanced building power consumption and heat demand, combine millet electricity and energy storage to be of value to the solar energy on the limited roof of make full use of, still satisfy the energy demand for building.
In order to solve the technical problems, the invention also provides a roof-type photovoltaic photo-thermal energy storage method, which comprises the following specific scheme:
a roof-type photovoltaic photo-thermal energy storage method comprises the following steps:
storing the liquid with the shingle; the roof plate sequentially comprises a base layer, a heat preservation water tank, a composite heat insulation layer and an outer tile layer from bottom to top, wherein the base layer, the heat preservation water tank, the composite heat insulation layer and the outer tile layer are fixedly connected; the system also comprises a first circulating pump, a second circulating pump, a storage battery and an inverter; the interior of the heat-preservation water tank is of a cavity structure, and an electric water heating device is fixedly arranged in the inner cavity of the heat-preservation water tank; the heat-preservation water tank is connected with a phase-change energy storage device, a liquid inlet of the phase-change energy storage device is respectively communicated with a liquid outlet of the light-heat plate and a liquid outlet of the electric water heating device, a liquid outlet of the phase-change energy storage device is communicated with an inner cavity of the heat-preservation water tank, and liquid stored in the roof plate is specifically stored in the heat-preservation water tank; the phase-change energy storage device is used for storing heat energy of liquid passing through the phase-change energy storage device or releasing heat energy to the liquid passing through the phase-change energy storage device;
conveying the liquid in the heat preservation water tank to the light and hot plate by using a first circulating pump;
the light and heat plate heats the liquid conveyed to the light and heat plate by utilizing light energy, and the heated liquid returns to the heat preservation water tank after passing through the phase change energy storage device;
converting light energy into electrical energy using the photovoltaic panel;
utilizing an inverter to invert the electric energy converted by the photoelectric panel into alternating current; the electric energy stored by the storage battery is inverted into alternating current;
the storage battery is used for storing the electric energy converted by the photoelectric panel and the off-peak electricity of the power grid;
utilizing an inverter to invert the stored electric energy of the storage battery into alternating current, and utilizing the alternating current to provide electric energy for a building;
conveying the liquid in the heat-preservation water tank to a liquid inlet of the electric water heating device by using a second circulating pump;
and the electric water heating device heats the liquid conveyed to the liquid inlet of the electric water heating device by utilizing the alternating current inverted by the inverter and/or the off-peak electricity of the power grid, and returns the heated liquid to the heat-preservation water tank after passing through the phase-change energy storage device.
Drawings
Fig. 1 is a schematic structural diagram of a roof-top photovoltaic photothermal energy storage system according to an embodiment of the present invention;
fig. 2 is a schematic view of a roof deck of a roof-type photovoltaic photothermal energy storage system according to an embodiment of the present invention;
fig. 3 is a schematic view of a connection structure between a heat preservation water tank and a photothermal plate of a roof-type photovoltaic and photothermal energy storage system according to an embodiment of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1-base layer, 2-heat preservation water tank, 3-water-smoothing strip layer, 4-waterproof permeable film layer, 5-composite heat insulation layer, 6-anticorrosion wood Gui Wa strip layer, 7-outer tile layer, 8-light hot plate, 9-light hot plate, 10-first circulating pump, 11-second circulating pump, 12-controller, 13-storage battery, 14-inverter, 15-phase change energy storage device, 16-electric water heating device, 17-first liquid inlet, 18-first liquid outlet, 19-water replenishing opening, 20-second liquid outlet, 21-second liquid inlet and 22-third liquid outlet.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1, the present embodiment provides a roof-type photovoltaic photo-thermal energy storage system, which includes a roof slab, and the roof slab includes, from bottom to top, a base layer 1, a thermal insulation water tank 2, a composite thermal insulation layer 5, and an outer tile layer 7, which are fixedly connected, and a photovoltaic panel 8 and a photovoltaic panel 9 are laid on the outer tile layer 7; the system also comprises a first circulating pump 10, a second circulating pump 11, a storage battery 13 and an inverter 14; the interior of the heat preservation water tank 2 is of a cavity structure, and an electric water heating device 16 is fixedly arranged in the inner cavity of the heat preservation water tank 2; the heat preservation water tank 2 is connected with a phase change energy storage device 15, a liquid inlet of the phase change energy storage device 15 is respectively communicated with a liquid outlet of the light and heat plate 8 and a liquid outlet of the electric water heating device 16, and a liquid outlet of the phase change energy storage device 15 is communicated with an inner cavity of the heat preservation water tank 2; the heat preservation water tank 2 is used for storing liquid.
The first circulating pump 10 is used for conveying the liquid in the heat preservation water tank 2 to the light and heat plate 8; the light and heat plate 8 is used for heating the liquid conveyed to the light and heat plate 8 by utilizing light energy, and returning the heated liquid into the heat preservation water tank 2 after passing through the phase change energy storage device 15; the photoelectric plate 9 is used for converting light energy into electric energy; the storage battery 13 is used for storing the electric energy converted by the photovoltaic panel 9 and the low-valley electricity of the power grid; the inverter 14 inverts the electric energy stored in the storage battery 13 into alternating current and provides electric energy for the building by using the alternating current; the second circulating pump 11 is used for conveying the liquid in the heat preservation water tank 2 to a liquid inlet of the electric water heating device 16; the electric water heating device 16 is used for heating the liquid conveyed to the liquid inlet of the electric water heating device 16 by utilizing alternating current inverted by the inverter 14 and/or off-peak electricity of a power grid, and returning the heated liquid to the heat preservation water tank 2 after passing through the phase change energy storage device 15; the phase change energy storage device 15 is used for storing thermal energy of liquid passing through the phase change energy storage device 15 or releasing thermal energy to the liquid passing through the phase change energy storage device 15. The electric water heater further comprises a controller 12, wherein the controller 12 is used for providing electric energy for the electric water heating device 16 and a building by utilizing the valley power of the power grid and the alternating current inverted by the inverter 14.
The photoelectric plate 9 is a photovoltaic plate, a photovoltaic tile or a photoelectric device such as cadmium telluride generating glass, the photoelectric plate 8 can also be a photo-thermal tile, and the electric water heating device 16 can be an electromagnetic energy water heating device, a resistance type water heating device, an ultrasonic water heating device, a semiconductor water heating device and the like. The photoelectric plate 8 and the photoelectric plate 9 form a photovoltaic photoelectric plate with an integrated structure; or the photovoltaic tile and the photo-thermal tile form a photovoltaic photo-thermal tile with an integrated structure.
As shown in fig. 2, a waterproof permeable film layer 4 and a water-guiding strip layer 3 are sequentially arranged between the heat-preservation water tank 2 and the composite heat-insulation layer 5 from top to bottom; and a corrosion-proof wood-cassia tile strip layer 6 is arranged between the composite heat-insulating layer 5 and the outer tile layer 7. And the outer wall of the heat preservation water tank 2 is coated with antirust heat insulation paint. The heat loss of the heat preservation water tank 2 can be further reduced by coating the antirust heat insulation paint outside the heat preservation water tank 2, and the heat preservation effect of the heat preservation water tank 2 is improved. The base layer 1 is a concrete layer or a steel roof truss layer. The outer tile layer 7 is a ceramic tile or an aluminum tile.
As shown in fig. 3, the interior of the heat-preservation water tank 2 is of a cavity structure; the phase change energy storage device 15 is fixedly arranged in the inner cavity of the heat preservation water tank 2; the phase-change material in the phase-change energy storage device 15 is used for absorbing heat of the liquid heated by the optical hot plate 8 and the electric water heating device 16 in the phase-change period, and meanwhile, the phase-change material in the phase-change energy storage device 15 can release the absorbed heat to heat the liquid in the phase-change period. The liquid in the heat-preservation water tank 2 is an important carrier for photo-thermal, photoelectric and valley-electricity conversion heat, is also a carrier for energy transfer with the phase-change material in the phase-change energy storage device 15, and is also beneficial to playing a role in energy storage. Through magnetoelectric phase change energy storage or water energy storage and commercial power combine to get up to be of value to the heat of storing photovoltaic light and heat production and photoelectricity, the heat of millet electricity conversion, form self-absorption, complementary use is favorable to satisfying green energy demand such as building heat supply water, confession heating installation, stoving completely, is favorable to not occupying building ground area and usage space, also plays thermal-insulated winter heat retaining effect in summer simultaneously.
Specifically, a first liquid inlet 17, a first liquid outlet 18, a water replenishing port 19, a second liquid outlet 20, a second liquid inlet 21 and a third liquid outlet 22 are formed in the heat preservation water tank 2; the first liquid inlet 17, the first liquid outlet 18, the water replenishing port 19, the second liquid outlet 20, the second liquid inlet 21 and the third liquid outlet 22 are communicated with the inner cavity of the heat-preservation water tank 2; the liquid outlet of the optical hot plate 8 is communicated with the first liquid inlet 17 through a pipeline, the first liquid inlet 17 is communicated with the liquid inlet of the phase change energy storage device 15 through a pipeline, or the liquid outlet of the optical hot plate 8 is directly communicated with the liquid inlet of the phase change energy storage device 15 through a pipeline, the connecting pipeline of the optical hot plate 8 and the phase change energy storage device 15 passes through the first liquid inlet 17, and at least one valve is arranged on the connecting pipeline of the optical hot plate 8 and the phase change energy storage device 15; the first liquid outlet 18 is communicated with a liquid inlet of the first circulating pump 10 through a pipeline, and a liquid outlet of the first circulating pump 10 is communicated with a liquid inlet of the light and heat plate 8 through a pipeline; the second liquid outlet 20 is communicated with a liquid inlet of the second circulating pump 11 through a pipeline, a liquid outlet of the second circulating pump 11 is communicated with a second liquid inlet 21 through a pipeline, the second liquid inlet 21 is communicated with a liquid inlet of the electric water heating device 16, or the liquid outlet of the second circulating pump 11 is directly communicated with a liquid inlet of the electric water heating device 16 through a pipeline, a connecting pipeline between the second circulating pump 11 and the electric water heating device 16 passes through the second liquid inlet 21, and a valve is arranged on the connecting pipeline between the second circulating pump 11 and the electric water heating device 16; a liquid outlet of the electric water heating device 16 is communicated with a liquid inlet of the phase change energy storage device 15 through a pipeline, and a valve is arranged on a connecting pipeline of the electric water heating device 16 and the phase change energy storage device 15; a liquid outlet of the phase change energy storage device 15 is communicated with the inner cavity of the heat preservation water tank 2 or the liquid outlet of the phase change energy storage device 15 is directly distributed in the inner cavity of the heat preservation water tank 2; the water replenishing port 19 is used for communicating with a tap water pipe, so that tap water can be replenished conveniently. The third outlet 22 is adapted to be connected to a water supply line for providing a supply of hot water to a building user.
According to the embodiment of the invention, the heat storage type heat preservation water tank 2 is arranged in the roof structure, so that the energy storage system can be integrated in the roof building structure to form a new roof structure mode, the heat generated by photo-thermal can be stored beneficially, the floor area and the using space of the building are not occupied, and the utilization space of the building is improved; meanwhile, the solar-thermal panel 8 and the photoelectric panel 9 are used as parts of a building roof structure, the advantage of green resources of roof solar energy is fully utilized, compared with the traditional method that a solar cell panel or a solar-thermal panel is used as an additional device to be arranged on a roof, the solar-thermal panel 8 and the photoelectric panel 9 can be laid on a limited roof in a standard, reasonable photoelectric panels and photoelectric panels can be additionally arranged on the building roof according to the actual requirements of building power supply, hot water supply, heating, drying and the like, the power consumption and heat consumption requirements of a building can be balanced, the roof solar energy is fully utilized, and energy waste is avoided. Lay photovoltaic board and light and heat board in building roof surface and be favorable to reducing support investment cost, it erects photoelectricity board and light and heat board to change traditional roof, ugly unsightly, fuse photovoltaic light and heat board in building roof surface, agree with the roof is perfect, building aesthetics has, safety, energy-conservation, productivity, advantages such as environmental protection health, the function of balanced roof is with pleasing to the eye, both satisfy the functional requirement of photovoltaic power generation thermal-arrest, compromise the basic function demand of building simultaneously, it is integrated with the building integration to realize photovoltaic light and heat square matrix, be of value to beautify building and city scenery.
Example 2
Based on embodiment 1, this embodiment provides a roof-type photovoltaic photo-thermal energy storage method, including the following steps:
storing the liquid with the shingle; the roof plate sequentially comprises a base layer 1, a heat preservation water tank 2, a composite heat insulation layer 5 and an outer tile layer 7 which are fixedly connected from bottom to top, wherein a photoelectric plate 8 and a photoelectric plate 9 are laid on the outer tile layer 7; the system also comprises a first circulating pump 10, a second circulating pump 11, a storage battery 13 and an inverter 14; the interior of the heat preservation water tank 2 is of a cavity structure, and an electric water heating device 16 is fixedly arranged in the inner cavity of the heat preservation water tank 2; the heat preservation water tank 2 is connected with a phase change energy storage device 15, a liquid inlet of the phase change energy storage device 15 is respectively communicated with a liquid outlet of the light and heat plate 8 and a liquid outlet of the electric water heating device 16, a liquid outlet of the phase change energy storage device 15 is communicated with an inner cavity of the heat preservation water tank 2, and liquid stored in the roof plate is specifically stored in the heat preservation water tank 2; the phase change energy storage device 15 is used for storing thermal energy of liquid passing through the phase change energy storage device 15 or releasing thermal energy to the liquid passing through the phase change energy storage device 15;
conveying the liquid in the heat preservation water tank 2 to the light and heat plate 8 by using a first circulating pump 10;
the light and heat plate 8 heats the liquid conveyed to the light and heat plate 8 by using light energy, and the heated liquid returns to the heat preservation water tank 2 after passing through the phase change energy storage device 15;
converting light energy into electrical energy by means of the photovoltaic panel 9;
the electric energy converted by the photoelectric panel 9 is inverted into alternating current by an inverter 14; the electric energy stored in the storage battery 13 is inverted into alternating current
The storage battery 13 is used for storing the electric energy converted by the photoelectric panel 9 and the off-peak electricity of the power grid;
the stored electric energy of the storage battery 13 is inverted into alternating current by an inverter 14, and the alternating current is used for providing electric energy for the building;
the liquid in the heat preservation water tank 2 is conveyed to a liquid inlet of an electric water heating device 16 by a second circulating pump 11;
the electric water heating device 16 heats the liquid delivered to the liquid inlet of the electric water heating device 16 by using the alternating current inverted by the inverter 14 and/or the off-peak electricity of the power grid, and returns the heated liquid to the heat preservation water tank 2 after passing through the phase change energy storage device 15.
According to the embodiment of the invention, the heat-preservation water tank 2 capable of storing heat is arranged in the roof structure, so that the energy storage system can be integrated in the roof building structure, a new roof structure mode is formed, the influence of photovoltaic photo-thermal and valley electricity on the roof on time, space time and climate is broken through, the advantages of green roof solar resources, valley electricity and the like are fully utilized, the combination of phase change energy storage and electromagnetic energy heat supply is beneficial to storing heat generated by photovoltaic photo-thermal and energy conversion of photoelectricity and commercial power, self-absorption and complementary use are formed, the green energy requirements of building hot water supply, heating, drying and the like are favorably met, the occupied floor area and the use space of the building are favorably avoided, and the effects of heat preservation in summer and heat insulation in winter are also achieved.
Electricity generated by the photovoltaic panel is supplied to a building through the inverter, the grid-connected electric box or the storage battery and the control box, the electricity is supplemented by alternating current when the electricity is insufficient or no sun, and redundant electricity is converted into heat through the electric water heating device and used for building heat energy, so that the photovoltaic electricity on the roof of the building can firstly meet the self-use photoelectric absorption problem of the building, and can be combined with commercial power to meet the building electricity consumption, and the pressure of a power company and the loss of grid-connected output electricity are reduced.
The heat storage type heat preservation water tank is arranged in the roof structure to store heat in the photoelectric plate and the photoelectric plate in the roof structure, and the heat, the photoelectricity and the alternating current are converted into heat for complementary use or are stored by the storage battery for complementary supply, illumination or redundant photoelectricity and are connected in a grid to form an energy storage type photovoltaic photo-thermal aesthetic roof for complementary storage, the in-situ power generation can be realized, the self consumption of in-situ power utilization of a building is taken as the main point, the investment of a power transmission grid of a power station can be saved within a certain distance range, the power is supplied to a load together with a public power grid, the reliability of power supply is improved, and the power supply pressure is relieved when most of generated power can be used for an electric peak; the energy consumption requirements of building hot water supply, heating, drying, power supply and the like are met by energy storage complementation and overcoming the problems that the ground surface space of a building is not occupied, solar energy is influenced by weather, valley electricity is influenced by time and the like, the energy consumption requirements of building hot water supply, heating, drying, power supply and the like are met, the early design of a newly-built roof in the building is facilitated, the roof can also be used for replacing and transforming the existing roof, particularly, a steel structure or other light floor supports which can meet the requirement of extending construction on a reconstructed light steel roof are arranged on the plane roof of the existing building, a steel structure floor with use space value is paved again, and then roof plates provided by the invention are paved on the steel structure floor. Form novel structure roof through energy memory and solar panel and replace traditional roof for on newly-built or rebuild roof and the roof of current flat house roof pergola set up light steel house again, be of value to the photovoltaic light and heat and the organic combination of millet electricity of make full use of limited roof area and use, reach and satisfy the building with can and not take up an area of the ground space completely and developed the building roof and utilize the space purpose.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. The utility model provides a roof formula photovoltaic light and heat energy storage system which characterized in that: the solar heat insulation roof comprises a roof plate, wherein the roof plate sequentially comprises a base layer (1), a heat insulation water tank (2), a composite heat insulation layer (5) and an outer tile layer (7) which are fixedly connected from bottom to top, and a photo-thermal plate (8) and a photoelectric plate (9) are laid on the outer tile layer (7); the system also comprises a first circulating pump (10), a second circulating pump (11), a storage battery (13) and an inverter (14); the interior of the heat-preservation water tank (2) is of a cavity structure, and an electric water heating device (16) is fixedly arranged in the inner cavity of the heat-preservation water tank (2); the heat-preservation water tank (2) is connected with a phase-change energy storage device (15), a liquid inlet of the phase-change energy storage device (15) is respectively communicated with a liquid outlet of the light and heat plate (8) and a liquid outlet of the electric water heating device (16), and a liquid outlet of the phase-change energy storage device (15) is communicated with an inner cavity of the heat-preservation water tank (2);
the heat preservation water tank (2) is used for storing liquid;
the first circulating pump (10) is used for conveying the liquid in the heat preservation water tank (2) to the light and heat plate (8);
the light and heat plate (8) is used for heating the liquid conveyed to the light and heat plate (8) by utilizing light energy, and returning the heated liquid into the heat preservation water tank (2) after passing through the phase change energy storage device (15);
the photoelectric plate (9) is used for converting light energy into electric energy;
the storage battery (13) is used for storing the electric energy converted by the photoelectric panel (9) and the off-peak electricity of the power grid;
the inverter (14) inverts the electric energy stored in the storage battery (13) into alternating current and provides electric energy for the building by using the alternating current;
the second circulating pump (11) is used for conveying the liquid in the heat-preservation water tank (2) to a liquid inlet of the electric water heating device (16);
the electric water heating device (16) is used for heating the liquid conveyed to the liquid inlet of the electric water heating device (16) by utilizing alternating current inverted by the inverter (14) and/or off-peak electricity of a power grid, and returning the heated liquid into the heat-preservation water tank (2) after passing through the phase-change energy storage device (15);
the phase change energy storage device (15) is used for storing the heat energy of the liquid passing through the phase change energy storage device (15) or releasing the heat energy to the liquid passing through the phase change energy storage device (15).
2. The rooftop photovoltaic photothermal energy storage system according to claim 1, wherein: the electric water heating device further comprises a controller (12), wherein the controller (12) is used for supplying electric energy to the electric water heating device (16) and a building by utilizing the valley electricity of the power grid and the alternating current inverted by the inverter (14).
3. The rooftop photovoltaic photothermal energy storage system according to claim 1, wherein: the outer wall of the heat preservation water tank (2) is coated with antirust heat insulation paint.
4. The rooftop photovoltaic photothermal energy storage system according to claim 1, wherein: a waterproof permeable film layer (4) and a water-guiding strip layer (3) are sequentially arranged between the heat-insulating water tank (2) and the composite heat-insulating layer (5) from top to bottom; and a corrosion-proof wood-osmanthus-tile strip layer (6) is arranged between the composite heat-insulating layer (5) and the outer tile layer (7).
5. The rooftop photovoltaic photothermal energy storage system according to any of claims 1 to 4, wherein: the base layer (1) is a concrete layer or a steel frame structure layer.
6. The rooftop photovoltaic photothermal energy storage system according to any of claims 1 to 4, wherein: the outer tile layer (7) is a ceramic tile or an aluminum tile.
7. The rooftop photovoltaic photothermal energy storage system according to any of claims 1-4, wherein: the photoelectric plate (8) and the photoelectric plate (9) form a photovoltaic photoelectric plate with an integrated structure.
8. A roof-type photovoltaic photo-thermal energy storage method is characterized by comprising the following steps: the method comprises the following steps:
storing the liquid with the shingle; the solar heat insulation roof comprises a roof plate, a solar heat insulation layer, a composite heat insulation layer and an outer tile layer, wherein the roof plate sequentially comprises a base layer (1), a heat insulation water tank (2), the composite heat insulation layer (5) and the outer tile layer (7) which are fixedly connected from bottom to top, and a photo-thermal plate (8) and a photoelectric plate (9) are laid on the outer tile layer (7); the system also comprises a first circulating pump (10), a second circulating pump (11), a storage battery (13) and an inverter (14); the interior of the heat-preservation water tank (2) is of a cavity structure, and an electric water heating device (16) is fixedly arranged in the inner cavity of the heat-preservation water tank (2); the heat preservation water tank (2) is connected with a phase change energy storage device (15), a liquid inlet of the phase change energy storage device (15) is respectively communicated with a liquid outlet of the light and heat plate (8) and a liquid outlet of the electric water heating device (16), a liquid outlet of the phase change energy storage device (15) is communicated with an inner cavity of the heat preservation water tank (2), and liquid stored in the roof plate is specifically stored in the heat preservation water tank (2); the phase change energy storage device (15) is used for storing the thermal energy of the liquid passing through the phase change energy storage device (15) or releasing the thermal energy to the liquid passing through the phase change energy storage device (15);
conveying the liquid in the heat preservation water tank (2) to the light and heat plate (8) by using a first circulating pump (10);
the light and heat plate (8) heats the liquid conveyed to the light and heat plate (8) by utilizing light energy, and the heated liquid returns to the heat preservation water tank (2) after passing through the phase change energy storage device (15);
converting light energy into electrical energy by means of the photovoltaic panel (9);
inverting the electric energy converted by the photoelectric panel (9) into alternating current by using an inverter (14); the electric energy stored in the storage battery (13) is inverted into alternating current;
the storage battery (13) is used for storing the electric energy converted by the photoelectric panel (9) and the low-ebb electricity of the power grid;
the stored electric energy of the storage battery (13) is inverted into alternating current by an inverter (14), and the alternating current is used for providing electric energy for the building;
the liquid in the heat-preservation water tank (2) is conveyed to a liquid inlet of an electric water heating device (16) by a second circulating pump (11);
and the electric water heating device (16) heats the liquid conveyed to the liquid inlet of the electric water heating device (16) by utilizing the alternating current inverted by the inverter (14) and/or the valley power of the power grid, and returns the heated liquid to the heat-preservation water tank (2) after passing through the phase-change energy storage device (15).
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| CN202211377721.5A CN115700317A (en) | 2022-11-04 | 2022-11-04 | Roof type photovoltaic photo-thermal energy storage system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116111946A (en) * | 2023-04-11 | 2023-05-12 | 赫里欧新能源有限公司 | Wind-solar-thermal storage straight-flexible energy-producing building system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116111946A (en) * | 2023-04-11 | 2023-05-12 | 赫里欧新能源有限公司 | Wind-solar-thermal storage straight-flexible energy-producing building system |
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