CN219011615U - Breathing type photovoltaic curtain wall system capable of storing heat - Google Patents

Breathing type photovoltaic curtain wall system capable of storing heat Download PDF

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CN219011615U
CN219011615U CN202223106197.6U CN202223106197U CN219011615U CN 219011615 U CN219011615 U CN 219011615U CN 202223106197 U CN202223106197 U CN 202223106197U CN 219011615 U CN219011615 U CN 219011615U
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curtain wall
glass
heat
photovoltaic
indoor
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刘兆辉
黄玉林
潘曦
杜晓燕
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Shanghai Construction Group Co Ltd
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Shanghai Construction Group Co Ltd
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Abstract

In the heat-storage breathing type photovoltaic curtain wall system, heat energy generated by a photovoltaic cell during power generation can be transferred to the phase-change material layer through the heat-conducting bonding layer and then emitted into the air interlayer through the radiating fin, so that the temperature of the photovoltaic cell is stabilized at a better working stability, and the power generation efficiency of the photovoltaic cell is improved. And then, through the opening and closing control of the outdoor air inlet, the outdoor air outlet, the indoor air inlet and the indoor air outlet, heat in the air interlayer can be applied to different scenes, so that the heat load requirement in the building is reduced while the comprehensive solar energy utilization efficiency is improved, and the indoor heat comfort performance of the building is improved.

Description

Breathing type photovoltaic curtain wall system capable of storing heat
Technical Field
The utility model belongs to the technical field of building construction, and particularly relates to a breathing type photovoltaic curtain wall system capable of storing heat.
Background
The photovoltaic curtain wall is a green building structure capable of regenerating energy, and is used for generating electricity by means of the solar cell panels arranged in the curtain wall, so that the photovoltaic curtain wall is more in application, but in actual operation, the problem of temperature effect caused by heating of the power generation assembly is solved, the photoelectric conversion efficiency of the power generation assembly is reduced, even the power generation assembly stops working, and the service life of the assembly and the power generation efficiency are influenced. In addition, the existing photovoltaic curtain wall has a single solar energy utilization mode and lacks a photovoltaic photo-thermal integration utilization technology.
Disclosure of Invention
The utility model provides a breathing type photovoltaic curtain wall system capable of storing heat, which aims to solve the problems that an existing photovoltaic curtain wall lacks an effective cooling and radiating mode and a solar energy utilization mode is single.
The utility model relates to a heat-storage breathing type photovoltaic curtain wall system, which has the following technical scheme that:
a breathing type photovoltaic curtain wall system capable of storing heat comprises an outer side double-glass photovoltaic photo-thermal curtain wall and indoor side glass; the upper side of the outer double-glass photovoltaic photo-thermal curtain wall is provided with a second curtain wall connecting piece, the upper side of the second curtain wall connecting piece is provided with an outdoor air outlet, and the upper side of the outdoor air outlet is connected with an outer wall of an upper floor main body structure through a second steel plate; the lower side of the outer double-glass photovoltaic photo-thermal curtain wall is provided with a first curtain wall connecting piece, the lower side of the first curtain wall connecting piece is provided with an outdoor air inlet, and the lower side of the outdoor air inlet is connected with an outer wall of a main structure of a lower floor through a first steel plate; an indoor air outlet is arranged on the upper side of the indoor side glass, and the upper side of the indoor air outlet is connected with an upper floor main body structure; an indoor air inlet is formed in the lower side of the indoor side glass, and the lower side of the indoor air inlet is connected with a main structure of a lower floor; an air interlayer is arranged between the outer side double-glass photovoltaic photo-thermal curtain wall and indoor side glass; the width of the air interlayer may be 500mm; the outer double-glass photovoltaic photo-thermal curtain wall sequentially comprises a glass front plate, a photovoltaic cell, a glass back plate, a heat conduction bonding layer and a phase change material layer from outside to inside; the photovoltaic cell can be a crystalline silicon cell (a monocrystalline silicon cell or a polycrystalline silicon cell) or a thin film cell (a silicon-based thin film cell, a copper indium gallium selenide cell, a gallium arsenide cell and a cadmium telluride cell), and a plurality of cooling fins are arranged on one side, close to the room, of the phase change material layer at intervals along the horizontal direction.
In the heat-storage breathing type photovoltaic curtain wall system, heat energy generated by a photovoltaic cell during power generation can be transferred to the phase-change material layer through the heat-conducting bonding layer and then emitted into the air interlayer through the radiating fin, so that the temperature of the photovoltaic cell is stabilized at a better working stability, and the power generation efficiency of the photovoltaic cell is improved. And then, through the opening and closing control of the outdoor air inlet, the outdoor air outlet, the indoor air inlet and the indoor air outlet, heat in the air interlayer can be applied to different scenes, so that the heat load requirement in the building is reduced while the comprehensive solar energy utilization efficiency is improved, and the indoor heat comfort performance of the building is improved.
Further, in the heat-storable respiratory photovoltaic curtain wall system, the outdoor air inlet, the outdoor air outlet, the indoor air inlet and the indoor air outlet are electric heat-preservation shutter air inlets; an insect-proof grille is respectively arranged on the outdoor air inlet and the outdoor air outlet; the insect prevention grille is made of stainless steel. The electric heat-insulating shutter air port can better insulate heat and ventilate, and is easier to integrate with an automatic control system, so that the automation degree of the whole system is improved; the insect-proof grille can prevent flying insects from entering.
Further, in the heat-storable respiratory photovoltaic curtain wall system, a first fireproof material layer is arranged on the first steel plate; and a second fireproof material layer is arranged on the second steel plate. The first fireproof material layer and the second fireproof material layer can adopt mineral cotton or rock cotton, and the thickness is between 100mm and 120 mm. The first steel plate and the second steel plate are used for supporting the first fireproof material layer and the second fireproof material layer, and the thickness is between 1.5mm and 2 mm.
Furthermore, in the heat-storable respiratory photovoltaic curtain wall system, in order to keep the light transmission effect of the curtain wall, the photovoltaic cells are strip-shaped and are arranged between the glass front plate and the glass back plate at intervals along the horizontal direction.
In the heat-storage respiratory photovoltaic curtain wall system, the photovoltaic cell is connected with the glass front plate through a first bonding layer and is connected with the glass back plate through a second bonding layer; the glass front plate and the glass back plate are made of toughened glass (the thickness is 4mm to 8 mm); the first bonding layer and the second bonding layer are EVA (ethylene-vinyl acetate copolymer) or PVB (polyvinyl butyral resin) or silica gel; the indoor side glass is hollow glass (with lower heat transfer coefficient).
Further, in the heat-storable respiratory photovoltaic curtain wall system, the phase change material in the phase change material layer is paraffin, fatty acid, polyethylene glycol, sodium sulfate decahydrate or a composite phase change material; the phase change temperature of the phase change material ranges from 25 ℃ to 55 ℃; graphene, carbon nanotubes, metal powder and expanded graphite are added into the phase change material. The phase change temperature range of the phase change material can be adjusted by changing the formula of the phase change material; graphene, carbon nanotubes, metal powder and expanded graphite are added into the phase change material, so that the heat conduction performance of the phase change material can be improved.
Drawings
FIG. 1 is a schematic illustration of a heat storable respiratory photovoltaic curtain wall system of the present utility model;
FIG. 2 is a schematic illustration of an outboard dual-pane photovoltaic photo-thermal curtain wall of a storable respiratory photovoltaic curtain wall system of the present utility model;
FIG. 3 is a schematic view of the installation of solar cells of a breathable photovoltaic curtain wall system capable of storing heat in accordance with the present utility model;
FIG. 4 is a schematic illustration of a method of controlling the external circulation mode of a heat storable respiratory photovoltaic curtain wall system of the present utility model;
FIG. 5 is a schematic illustration of a method of controlling the internal circulation mode of a heat storable respiratory photovoltaic curtain wall system of the present utility model;
FIG. 6 is a schematic diagram of a method of controlling the closed mode of a heat storable respiratory photovoltaic curtain wall system of the present utility model;
FIG. 7 is a schematic diagram of a method of controlling the internal and external modes of ventilation of a heat storable respiratory photovoltaic curtain wall system of the present utility model;
fig. 8 is a schematic diagram of a method for controlling the internal and external ventilation modes two of a heat-storable respiratory photovoltaic curtain wall system according to the present utility model.
Detailed Description
The utility model is described in further detail below with reference to the drawings and the specific examples. Advantages and features of the utility model will become more apparent from the following description and from the claims. It should be noted that the drawings are in a very simplified form and are all to a non-precise scale, merely for convenience and clarity in aiding in the description of embodiments of the utility model.
Example 1:
referring to fig. 1 to 3, the present embodiment provides a breathing type photovoltaic curtain wall system capable of storing heat, which comprises an outer side double-glass photovoltaic photo-thermal curtain wall 1 and an indoor side glass 2; the upper side of the outer double-glass photovoltaic photo-thermal curtain wall 1 is provided with a second curtain wall connecting piece 13, the upper side of the second curtain wall connecting piece 13 is provided with an outdoor air outlet 5, and the upper side of the outdoor air outlet 5 is connected with the outer wall of an upper floor main body structure 17 through a second steel plate 15; the lower side of the outer double-glass photovoltaic photo-thermal curtain wall 1 is provided with a first curtain wall connecting piece 12, the lower side of the first curtain wall connecting piece 12 is provided with an outdoor air inlet 4, and the lower side of the outdoor air inlet 4 is connected with the outer wall of a lower floor main body structure 16 through a first steel plate 9; an indoor air outlet 7 is arranged on the upper side of the indoor side glass 2, and the upper side of the indoor air outlet 7 is connected with an upper floor main body structure 17; an indoor air inlet 6 is arranged on the lower side of the indoor side glass 2, and the lower side of the indoor air inlet 6 is connected with a lower floor main body structure 16; an air interlayer 3 is arranged between the outer side double-glass photovoltaic photo-thermal curtain wall 1 and the indoor side glass 2; the width of the air interlayer 3 may be 500mm; the outer double-glass photovoltaic photo-thermal curtain wall 1 sequentially comprises a glass front plate 101, a photovoltaic cell 103, a glass back plate 105, a heat conduction bonding layer 106 and a phase change material layer 107 from outside to inside; the photovoltaic cell 103 may be a crystalline silicon cell (monocrystalline silicon cell or polycrystalline silicon cell) or a thin film cell (silicon-based thin film cell, copper indium gallium selenide cell, gallium arsenide cell, cadmium telluride cell), and the phase change material layer 107 is disposed near one side of the room at intervals along the horizontal direction with a plurality of heat sinks 20.
In the heat-storable respiratory photovoltaic curtain wall system, heat energy generated by the photovoltaic cell 103 during power generation can be transferred to the phase-change material layer 107 through the heat-conducting bonding layer 106 and then emitted into the air interlayer 3 through the radiating fin 20, so that the temperature of the photovoltaic cell 103 is stabilized at a better working stability, and the power generation efficiency of the photovoltaic cell 103 is improved. After that, through the open-close control of the outdoor air inlet 4, the outdoor air outlet 5, the indoor air inlet 6 and the indoor air outlet 7, the heat in the air interlayer 3 can be applied to different scenes, so that the heat load demand in the building room is reduced while the comprehensive solar energy utilization efficiency is improved, and the heat comfort performance in the building room is improved.
In the preferred embodiment, in the heat-storable respiratory photovoltaic curtain wall system, the outdoor air inlet 4, the outdoor air outlet 5, the indoor air inlet 6 and the indoor air outlet 7 are electric heat-preservation shutter air inlets; an insect-proof grille 10 (11) is respectively arranged on the outdoor air inlet 4 and the outdoor air outlet 5; the insect-proof grille 10 (11) is made of stainless steel. The electric heat-insulating shutter air port can better insulate heat and ventilate, and is easier to integrate with an automatic control system, so that the automation degree of the whole system is improved; the insect-proof grille 10 (11) can prevent flying insects from entering.
As a preferred embodiment, in the heat-storable respiratory photovoltaic curtain wall system, the first steel plate 9 is provided with a first fireproof material layer 8; the second steel plate 15 is provided with a second layer 14 of fire-proof material. The first fireproof material layer 8 and the second fireproof material layer 14 can be mineral cotton or rock cotton, and the thickness is between 100mm and 120 mm. The first steel plate 9 and the second steel plate 15 are used for supporting the first fireproof material layer 8 and the second fireproof material layer 14, and the thickness is between 1.5mm and 2 mm.
In the preferred embodiment, in the heat-storable respiratory photovoltaic curtain wall system, in order to maintain the light transmission effect of the curtain wall, the photovoltaic cells 103 are strip-shaped and are arranged between the glass front plate 101 and the glass back plate 105 at intervals along the horizontal direction.
In the preferred embodiment, in the heat-storable respiratory photovoltaic curtain wall system, specifically, the photovoltaic cell 103 is connected to the glass front plate 101 through the first adhesive layer 102 and is connected to the glass back plate 105 through the second adhesive layer 104; the glass front plate 101 and the glass back plate 105 are toughened glass (the thickness is 4mm to 8 mm); the first adhesive layer 102 and the second adhesive layer 104 are EVA (ethylene-vinyl acetate copolymer) or PVB (polyvinyl butyral resin) or silicone; the indoor side glass 2 is hollow glass (with a low heat transfer coefficient).
In a preferred embodiment, in the heat-storable respiratory photovoltaic curtain wall system, the phase-change material in the phase-change material layer 107 is paraffin, fatty acid, polyethylene glycol, sodium sulfate decahydrate or a composite phase-change material; the phase change temperature of the phase change material ranges from 25 ℃ to 55 ℃; graphene, carbon nanotubes, metal powder and expanded graphite are added into the phase change material. The phase change temperature range of the phase change material can be adjusted by changing the formula of the phase change material; graphene, carbon nanotubes, metal powder and expanded graphite are added into the phase change material, so that the heat conduction performance of the phase change material can be improved.
The heat-storable respiratory photovoltaic curtain wall system of the embodiment can realize different operation control modes according to the change of different seasons and outdoor weather conditions by controlling the opening and closing of the outdoor air inlet 4, the outdoor air outlet 5, the indoor air inlet 6 and the indoor air outlet 7:
1. referring to fig. 4, when the outer loop mode: the outdoor air inlet 4 is open, the outdoor air outlet 5 is open, the indoor air inlet 6 is closed, and the indoor air outlet 7 is closed. The outer circulation mode is mainly adopted in summer and daytime. The photovoltaic cell 103 receives solar radiation to generate electric energy, and at the same time, a part of the electric energy is converted into heat energy to cause the temperature of the photovoltaic cell 103 to rise, and the phase change material layer 107 absorbs heat to maintain the working temperature of the photovoltaic cell 103. Meanwhile, part of heat energy is taken away by the air in the external circulation after heat exchange with the phase change material layer 107 through the air interlayer 3, so that the temperature of the photovoltaic cell 103 is further reduced, and the power generation efficiency of the photovoltaic cell 103 is further improved.
2. Referring to fig. 5, the inner loop mode: the outdoor air inlet 4 is closed, the outdoor air outlet 5 is closed, the indoor air inlet 6 is opened, and the indoor air outlet 7 is opened. The internal circulation mode is mainly adopted in winter. The heat energy of the photovoltaic cell 103 absorbed by the phase-change material layer 107 enters the room after the heat exchange between the air of the internal circulation and the phase-change material layer 107 through the indoor air inlet 6, the air interlayer 3 and the indoor air outlet 7, so that the indoor temperature is improved, and the indoor thermal comfort is improved.
3. Referring to fig. 6, closed mode: the outdoor air inlet 4 is closed, the outdoor air outlet 5 is closed, the indoor air inlet 6 is closed, and the indoor air outlet 7 is closed. In the closed mode, the thermal energy of the photovoltaic cell 103 absorbed by the phase change material layer 107 circulates within the air interlayer 3. At this time, the air interlayer 3 plays a role of a heat insulation layer, reduces indoor heat load, is favorable for keeping indoor temperature, and ensures thermal comfort.
4. Referring to fig. 7, the inside and outside ventilation mode one: the outdoor air inlet 4 is opened, the outdoor air outlet 5 is opened, the indoor air inlet 6 is opened, and the indoor air outlet 7 is opened. At this time, the outdoor fresh air can directly enter the room, so that the indoor air quality is ensured.
5. Referring to fig. 8, inside-outside ventilation mode two: the outdoor air inlet 4 is open, the outdoor air outlet 5 is closed, the indoor air inlet 6 is closed, and the indoor air outlet 7 is open. At this time, fresh air outside the room may enter the room through the outdoor air inlet 4, the air interlayer 3, and the indoor air outlet 7. Fresh air exchanges heat with the phase change material layer 107 in the air interlayer 3 and heats up, so that fresh air is provided indoors, and meanwhile, fresh air preheating effect is achieved, and indoor environment quality is improved.
The above description is only illustrative of the preferred embodiments of the present utility model and is not intended to limit the scope of the present utility model, and any alterations and modifications made by those skilled in the art based on the above disclosure shall fall within the scope of the appended claims.

Claims (6)

1. The breathing type photovoltaic curtain wall system capable of storing heat is characterized by comprising an outer side double-glass photovoltaic photo-thermal curtain wall (1) and indoor side glass (2);
the upper side of the outer double-glass photovoltaic photo-thermal curtain wall (1) is provided with a second curtain wall connecting piece (13), the upper side of the second curtain wall connecting piece (13) is provided with an outdoor air outlet (5), and the upper side of the outdoor air outlet (5) is connected with the outer wall of an upper floor main body structure (17) through a second steel plate (15); the lower side of the outer double-glass photovoltaic photo-thermal curtain wall (1) is provided with a first curtain wall connecting piece (12), the lower side of the first curtain wall connecting piece (12) is provided with an outdoor air inlet (4), and the lower side of the outdoor air inlet (4) is connected with the outer wall of a main structure (16) of a lower floor through a first steel plate (9);
an indoor air outlet (7) is formed in the upper side of the indoor side glass (2), and the upper side of the indoor air outlet (7) is connected with an upper floor main body structure (17); an indoor air inlet (6) is formed in the lower side of the indoor side glass (2), and the lower side of the indoor air inlet (6) is connected with a lower floor main body structure (16);
an air interlayer (3) is arranged between the outer double-glass photovoltaic photo-thermal curtain wall (1) and the indoor side glass (2);
the outer double-glass photovoltaic photo-thermal curtain wall (1) sequentially comprises a glass front plate (101), a photovoltaic cell (103), a glass back plate (105), a heat conduction bonding layer (106) and a phase change material layer (107) from outside to inside;
and a plurality of cooling fins (20) are arranged on one side, close to the indoor side, of the phase change material layer (107) at intervals along the horizontal direction.
2. The heat-storable respiratory photovoltaic curtain wall system according to claim 1, wherein the outdoor air inlet (4), the outdoor air outlet (5), the indoor air inlet (6) and the indoor air outlet (7) are electric thermal insulation louver air inlets; an outdoor air inlet (4) and an outdoor air outlet (5) are respectively provided with insect-proof grids (10, 11); the insect prevention grids (10, 11) are made of stainless steel.
3. A heat storable respiratory photovoltaic curtain wall system according to claim 1, characterized in that the first steel plate (9) is provided with a first layer of fire-proof material (8); the second steel plate (15) is provided with a second fireproof material layer (14).
4. The heat-storable respiratory photovoltaic curtain wall system according to claim 1, wherein the photovoltaic cells (103) are strip-shaped and are arranged between the glass front plate (101) and the glass back plate (105) at intervals in the horizontal direction.
5. The heat-storable respiratory photovoltaic curtain wall system according to claim 1, characterized in that the photovoltaic cell (103) is connected to the glass front panel (101) by means of a first adhesive layer (102) and to the glass back panel (105) by means of a second adhesive layer (104); the glass front plate (101) and the glass back plate (105) are made of toughened glass; the first bonding layer (102) and the second bonding layer (104) are EVA or PVB or silica gel; the indoor side glass (2) is hollow glass.
6. The heat-storable respiratory photovoltaic curtain wall system according to claim 1, wherein the phase change material in the phase change material layer (107) is paraffin, fatty acid, polyethylene glycol, sodium sulfate decahydrate or a composite phase change material; the phase change temperature of the phase change material ranges from 25 ℃ to 55 ℃; graphene, carbon nanotubes, metal powder and expanded graphite are added into the phase change material.
CN202223106197.6U 2022-11-23 2022-11-23 Breathing type photovoltaic curtain wall system capable of storing heat Active CN219011615U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117005591A (en) * 2023-08-11 2023-11-07 哈尔滨工业大学 A photothermal and electrically controlled double-layer curtain wall

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117005591A (en) * 2023-08-11 2023-11-07 哈尔滨工业大学 A photothermal and electrically controlled double-layer curtain wall

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