Photovoltaic curtain walls and buildings

Abstract

The present application relates to the field of building photovoltaic integration, and in particular to a photovoltaic curtain wall and a building. The photovoltaic curtain wall comprises an outer curtain wall and an inner curtain wall arranged opposite the outer curtain wall; the outer curtain wall comprises a plurality of sub-curtain walls, which are spaced apart along a first direction, the first direction being parallel to the extension direction of the inner curtain wall; along the first direction, each of the two adjacent sub-curtain walls is provided with an air outlet, a partition assembly is provided between each sub-curtain wall and the inner curtain wall, and the air outlet on the sub-curtain wall is located on the side of the partition assembly corresponding to the sub-curtain wall facing the previous sub-curtain wall; a gas channel is formed between each sub-curtain wall, each partition assembly and the inner curtain wall, and external gas enters the gas channel through the gap between the two adjacent sub-curtain walls, and the gas in the gas channel is discharged through the gas outlet. The photovoltaic curtain wall in the present application can improve the heat dissipation effect of the gas channel and ensure the service life of the photovoltaic curtain wall.

Description

Technical Field

[0001] The present application relates to the field of building photovoltaic integration, and in particular to a photovoltaic curtain wall and a building. Background Art

[0002] Photovoltaic curtain walls are generally used in buildings. They are double-layered. The outer curtain wall not only provides enclosure but also absorbs solar energy to generate electricity. A gas channel is located between the outer and inner curtain walls, where some of the heat from sunlight is accumulated to insulate the building. When the sun shines, the photovoltaic modules on the outer curtain wall absorb sunlight to generate electricity. During the power generation process, the temperature of the modules themselves also rises. The accumulated heat from the sun creates a chimney effect in the gas channel, which can cause the living spaces within the building to become overheated. Furthermore, excessively high gas channel temperatures can reduce the photovoltaic conversion efficiency of the photovoltaic modules installed on the outer curtain wall. Furthermore, long-term operation of the photovoltaic modules in a high-temperature environment can accelerate their aging, thus affecting the service life of the photovoltaic curtain wall. Summary of the Invention

[0003] The present application provides a photovoltaic curtain wall, which can improve the heat dissipation effect of the gas channel, thereby ensuring the service life of the photovoltaic curtain wall.

[0004] In a first aspect, the present application provides a photovoltaic curtain wall that can be used on a building, which is generally a building. Specifically, the photovoltaic curtain wall may include an inner curtain wall and an outer curtain wall arranged opposite the inner curtain wall, the inner curtain wall extending in a direction that is the height direction of the building, and the inner curtain wall may be an exterior wall on the outside of the building and a plurality of window glasses arranged on the exterior wall; the outer curtain wall includes a plurality of sub-curtain walls, the plurality of sub-curtain walls being spaced apart along a first direction, the first direction being the same as the extending direction of the inner curtain wall, and each of two adjacent sub-curtain walls along the first direction having an air outlet provided on each sub-curtain wall, a partition component being provided between each sub-curtain wall and the inner curtain wall, the air outlet on the sub-curtain wall being located on a side of the partition component corresponding to the sub-curtain wall facing the previous sub-curtain wall; a gas channel is formed between each sub-curtain wall, each partition component, and the inner curtain wall, external gas enters the gas channel through a gap between two adjacent sub-curtain walls, and gas in the gas channel is discharged through the gas outlet. In this setting method, the gas channels formed between each sub-curtain wall, each partition component and the inner curtain wall are independent of each other. External air can enter the gas channel through the gap between the two adjacent sub-curtain walls, that is, the gas channel is actually connected to the gap between the two adjacent sub-curtain walls and is discharged through the air outlet set on the sub-curtain wall. In this way, each sub-curtain wall and the inner curtain wall can independently exhaust and dissipate heat, thereby improving the heat dissipation effect between the outer curtain wall and the inner curtain wall, preventing the temperature between the outer curtain wall and the inner curtain wall from being too high, and improving the service life of the photoelectric curtain wall.

[0005] In a possible embodiment, in order to adjust the amount of air entering the gap between two adjacent sub-curtain walls, the photovoltaic curtain wall further includes a plurality of adjustment structures. Along the first direction, an adjustment structure is provided at the gap between each two adjacent sub-curtain walls, and air can enter the gas channel through the adjustment structure.

[0006] Specifically, the regulating structure may be, but is not limited to, a shutter and a porous plate.

[0007] In the above-described embodiment, the partition assembly may include a deflector. Along a first direction, between each of two adjacent sub-curtain walls, the first end of the deflector corresponding to the preceding sub-curtain wall is connected to the inner curtain wall, and the second end of the deflector is connected to the side of the preceding sub-curtain wall facing the next sub-curtain wall. Furthermore, as projected onto the inner curtain wall, the first end of the deflector is located above the second end of the deflector. The provision of the deflector allows liquid formed by accumulated condensation on the inner curtain wall to be drained through the deflector to the exterior of the outer curtain wall, thereby ensuring secure installation and stable operation of the photovoltaic curtain wall.

[0008] It should be noted that when installing the guide plate, the angle between the guide plate and the plane perpendicular to the inner curtain wall can be 5 to 10 degrees, wherein the guide plate only needs to be able to discharge the water generated by condensation on the inner curtain wall and seal the outlet of the gas channel corresponding to the guide plate.

[0009] The partition assembly may also include fireproof cotton, the first end of which may be connected to the inner curtain wall, and the second end of which may be connected to the sub-curtain wall. The fireproof cotton is positioned between the air outlet and the deflector, with a sealed space formed between the fireproof cotton and the deflector. The provision of fireproof cotton can improve the safety of photovoltaic curtain walls, and the sealed space formed between the fireproof cotton and the deflector can also extend the service life of the fireproof cotton, reduce the frequency of fireproof cotton replacement, and reduce costs.

[0010] In a possible embodiment, in order to ensure stable installation of the photoelectric curtain wall, the photoelectric curtain wall also includes multiple brackets and multiple first connecting members, wherein each sub-curtain wall may correspond to at least one bracket, the sub-curtain wall is installed at the first end of the bracket, and the second end of the bracket can be connected to the inner curtain wall through the first connecting member.

[0011] The photovoltaic curtain wall may further include a second connecting member, the two ends of which are respectively connected to the sub-curtain wall and the inner curtain wall, so as to improve the stability of the sub-curtain wall installation.

[0012] In the above embodiment, a first photovoltaic glass assembly and a second photovoltaic glass assembly can be provided on the sub-curtain wall. The sizes of the first photovoltaic glass assembly and the second photovoltaic glass assembly are different. Specifically, the size of the first photovoltaic glass assembly is larger than that of the second photovoltaic glass assembly. The size here can be understood as the area of ​​the first photovoltaic glass assembly and the second photovoltaic glass assembly.

[0013] In the second aspect, the present application also provides a building with a photovoltaic curtain wall according to any technical solution in the first aspect. Due to the setting of the photovoltaic curtain wall, the ventilation effect in the building can be improved, heat accumulation can be prevented, and the comfort of people in the building can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram of the structure of the photovoltaic curtain wall provided in an embodiment of the present application;

[0015] Figure 2 A front view of the photovoltaic curtain wall provided in an embodiment of the present application;

[0016] Figure 3 for Figure 1 A partial enlarged view of middle A;

[0017] Figure 4 for Figure 1 A partial enlarged view of B in the middle;

[0018] Figure 5 This is a thermal simulation diagram of the gas channel between the photovoltaic curtain wall and the building in the prior art;

[0019] Figure 6 This is a thermal simulation diagram of the gas channel between the photovoltaic curtain wall and the building provided in an embodiment of the present application.

[0020] Reference numerals:

[0021] 10-exterior curtain wall; 11-sub-curtain wall; 12-gas channel; 13-air outlet; 20-interior curtain wall; 30-partitioning assembly; 31-guide plate; 32-fireproof cotton; 40-adjusting structure; 50-bracket; 60-first connecting piece; 70-second connecting piece; 80-first photovoltaic glass assembly; 90-second photovoltaic glass assembly. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of this application clearer, this application will be further described in detail below with reference to the accompanying drawings.

[0023] With the widespread promotion of new energy, building integrated photovoltaic (BIPV) has also been widely used. Among them, photovoltaic curtain walls, as a major category of BIPV, are being widely used in building scenarios. In the prior art, the window exhaust vents of the gas channel of the double-layer photovoltaic curtain wall only exist in the lower floors and the top floor of the building. The gas channel runs through from top to bottom, and the air exchange in the inner curtain wall space can only be carried out through the window exhaust vents above and below. The heat in the lower layer flows upward through the gas channel, and the heat is dissipated or collected from the window above. When the heat in the gas channel is high, or the height of the building is too high, the heat will accumulate on the top floor and be difficult to remove, resulting in overheating of the upper layer and difficulty in ventilation. This will not only affect the comfort level in the building, but also reduce the photoelectric conversion efficiency of the photovoltaic modules arranged on the outer curtain wall, and reduce the life of the photovoltaic modules.

[0024] The terms used in the following embodiments are only for the purpose of describing specific embodiments and are not intended to limit the present application. As used in the specification and appended claims of this application, the singular expressions "a", "an", "said", "above", "the", and "this" are intended to also include expressions such as "one or more", unless the context clearly indicates otherwise.

[0025] References to "one embodiment" or "some embodiments" in this specification mean that a particular feature, structure, or characteristic described in conjunction with that embodiment is included in one or more embodiments of the present application. Thus, phrases such as "in one embodiment," "in some embodiments," "in other embodiments," and "in yet other embodiments" appearing in various places in this specification do not necessarily refer to the same embodiment, but rather mean "one or more but not all embodiments," unless otherwise specifically emphasized. The terms "including," "comprising," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0026] The embodiment of the present application provides a photovoltaic curtain wall, which can be applied to a building, which is generally a building. Specifically, the photovoltaic curtain wall may include an inner curtain wall and an outer curtain wall arranged opposite to the inner curtain wall. The inner curtain wall may extend in the height direction of the building, and the inner curtain wall may be the outer wall of the building and a plurality of window glasses arranged on the outer wall; Figure 1 , Figure 1The direction of the arrow C in the middle is the flow direction of the gas in the gas channel 12. The outer curtain wall 10 of the photovoltaic curtain wall in the present application may include a plurality of sub-curtain walls 11, and the plurality of sub-curtain walls 11 are arranged at intervals along a first direction, and the first direction is parallel to the extension direction of the inner curtain wall. Along the first direction, in each adjacent two sub-curtain walls 11, an air outlet 13 is provided on each sub-curtain wall 11, and a partition component 30 is provided between each sub-curtain wall 11 and the inner curtain wall. The air outlet 13 on the sub-curtain wall 11 is located on the side of the partition component 30 corresponding to the sub-curtain wall 11 facing the previous sub-curtain wall 11; a gas channel 12 is formed between each sub-curtain wall 11, each partition component 30 and the inner curtain wall, and the external gas enters the gas channel 12 through the gap between the two adjacent sub-curtain walls 11, and the gas in the gas channel 12 is discharged through the air outlet. In this arrangement, the gas passages 12 formed between each sub-curtain wall 11, each partition assembly 30, and the inner curtain wall are independent of each other. External air can pass through the gap between two adjacent sub-curtain walls 11 to the gas passages 12 and be discharged through the air outlets 13 provided on the sub-curtain walls 11. In this way, each sub-curtain wall 11 and the inner curtain wall 20 can independently exhaust and dissipate heat, thereby improving the heat dissipation effect of the gas passages 12 between the outer curtain wall 10 and the inner curtain wall 20, preventing the temperature between the outer curtain wall 10 and the inner curtain wall 20 from being too high, and improving the service life of the photovoltaic curtain wall. Since each gas passage 12 is relatively independent, the heat generated in each gas passage 12 can only be accumulated on the side of each gas passage 12 close to the partition assembly 30. The heat in each gas passage 12 will not be concentrated on the top layer, thereby preventing the heat in each gas passage 12 from accumulating on the top layer, which is also beneficial to improving the heat dissipation effect between the outer curtain wall 10 and the inner curtain wall 20.

[0027] In the above-described embodiment, the provision of partition assemblies 30 and air outlets 13 on sub-curtain walls 11 allows for independent exhaust and heat dissipation between each sub-curtain wall 11 and the inner curtain wall 20. This facilitates heat or air exchange between the air within the inner curtain wall 20 and the external environment, thereby improving the comfort of occupants in buildings and other structures where photovoltaic curtain walls are used. A regulating plate may also be provided at the air outlet 13 to control the amount of air flowing out through the air outlet 13.

[0028] Reference Figure 1 and Figure 2 When the sub-curtain wall 11 is specifically set up, a first photovoltaic glass component 80 and a second photovoltaic glass component 90 can be set on the sub-curtain wall 11. The sizes of the first photovoltaic glass component 80 and the second photovoltaic glass component 90 are different. Specifically, the size of the first photovoltaic glass component 80 can be larger than the second photovoltaic glass component 90. The size here can be understood as the area of ​​the first photovoltaic glass component 80 and the second photovoltaic glass component 90.

[0029] Reference Figure 1、 Figure 2 and Figure 3 In the above embodiment, the photoelectric curtain wall may further include a plurality of adjustment structures 40. The adjustment structure 40 may be arranged between two adjacent sub-curtain walls 11, that is, the adjustment structure 40 is arranged in the gap between the two adjacent sub-curtain walls 11. The adjustment structure 40 is detachably connected to the two adjacent sub-curtain walls 11 to improve the stability of each sub-curtain wall 11 after being installed on the inner curtain wall 20. The adjustment structure 40 is detachably connected to the sub-curtain wall 11, which is conducive to the replacement of the adjustment structure 40. Moreover, the setting of the adjustment structure 40 can adjust the amount of gas entering the gas channel 12 to achieve the purpose of adjusting the heat dissipation effect between the sub-curtain wall 11 and the inner curtain wall 20.

[0030] Specifically, the regulating structure 40 may include various forms, such as shutters or porous plates. When the regulating structure 40 is a shutter, the shutter is detachably installed between two adjacent sub-curtain walls 11. The amount of air entering the gas channel 12 through the shutter can be adjusted by adjusting the opening of the shutter. In addition, the shutter has a simple structure and is easy to operate.

[0031] When the regulating structure 40 is a porous plate, the porous plate can be, but is not limited to, an aluminum plate. The two ends of the porous plate can be detachably installed between two adjacent sub-curtain walls 11. By adjusting the number of openings provided on the porous plate, the amount of air entering the gas channel 12 can be controlled.

[0032] Reference Figure 1 and Figure 4 In the above embodiment, the partition assembly 30 may include a guide plate 31, which can seal the outlet of the gas channel 12, that is, the guide plate 31 can separate two adjacent gas channels 12. Specifically, in each of two adjacent sub-curtain walls 11, along the first direction, the first end of the guide plate 31 corresponding to the previous sub-curtain wall 11 is connected to the inner curtain wall 20, and the second end of the guide plate 31 is connected to the side of the previous sub-curtain wall 11 facing the next sub-curtain wall 11, that is, the second end of the guide plate 31 is located above the side of the previous sub-curtain wall 11 facing the next sub-curtain wall 11, and in the projection of the inner curtain wall 20, the first end of the guide plate 31 is located above the second end of the guide plate 31. In this way, liquid accumulated by condensation on the outside of the inner curtain wall 20 can be discharged to the outside of the outer curtain wall 10 by the guide plate 31, thereby preventing condensation from damaging the curtain wall and cables.

[0033] When the deflector 31 is installed between the sub-curtain wall 11 and the inner curtain wall 20, condensation on the deflector 31 can flow from the inner curtain wall 20 toward the outer curtain wall 10. More specifically, the angle between the deflector 31 and a plane perpendicular to the inner curtain wall 20 can be 5-10 degrees, and the deflector 31 can seal the outlet of the gas channel 12 corresponding to the deflector 31.

[0034] In order to improve the safety of the use of the photovoltaic curtain wall, the partition component 30 can also include fireproof cotton 32. The first end of the fireproof cotton 32 can be connected to the inner curtain wall 20, and the second end of the fireproof cotton 32 can be connected to the sub-curtain wall 11. The fireproof cotton 32 is arranged between the air outlet 13 of the sub-curtain wall 11 and the guide plate 31, and a sealed space can be formed between the fireproof cotton 32 and the guide plate 31 to ensure that the gases in each gas channel 12 do not circulate with each other. In addition, the setting of the sealed space can also increase the service life of the fireproof cotton 32 and reduce the number and cost of replacing the fireproof cotton 32.

[0035] Continue to refer to Figure 1 In the above embodiment, each sub-curtain wall 11 is fixed relative to the inner curtain wall 20. Specifically, the photovoltaic curtain wall may include multiple brackets 50, multiple first connectors 60, and second connectors 70. Each sub-curtain wall 11 may correspond to at least one bracket 50. The sub-curtain wall 11 is mounted on the first end of the bracket 50. The second end of the bracket 50 can be connected to the inner curtain wall 20 via the first connector 60. The two ends of the second connector 70 are respectively connected to the sub-curtain wall 11 and the inner curtain wall 20 to improve the stability of the installation of the sub-curtain wall 11. The second connector 70 may be a perforated connector.

[0036] The heat dissipation effect of the photovoltaic curtain wall in this application and the photovoltaic curtain wall in the prior art is described below.

[0037] Figure 5 For the photovoltaic curtain wall in the existing technology, the external environment temperature is 35℃, the wind speed is 6m / s, and solar radiation is taken into account; the outer curtain wall is 1m away from the building (inner curtain wall), and there is no obstruction in the middle except for the bracket. The solar radiation absorption rate of the first photovoltaic glass component on the outer curtain wall is 60%, and the solar radiation absorption rate of the first photovoltaic glass component is 80%. Figure 5 , it can be obtained that the temperature of the gas channel between the top of the outer curtain wall and the top of the building can reach 47.4 degrees Celsius.

[0038] Figure 6For the photovoltaic curtain wall in this application, the external ambient temperature is 35°C, the wind speed is 6m / s, and solar radiation is considered; the outer curtain wall is 1m away from the building (inner curtain wall), and the adjustment structure set between the two adjacent sub-curtain walls can be a blind, the opening rate of the blind is 50%, the solar radiation absorption rate of the first photovoltaic glass component on the outer curtain wall is 60%, and the solar radiation absorption rate of the first photovoltaic glass component is 80%. Figure 6 , it can be found that the temperature of the gas passage between the top of the exterior curtain wall and the top of the building can reach 43.1 degrees Celsius. Compared to conventional photovoltaic curtain walls, when the photovoltaic curtain wall in this application is applied to a building, the temperature in the gas passage increases more slowly from the lower floors to the top floor, and the temperature between the building top and the gas passage decreases significantly. This can improve the comfort of people in buildings and other structures when the photovoltaic curtain wall is applied.

[0039] The present application also provides a building having the above-mentioned photovoltaic curtain wall. Due to the setting of the photovoltaic curtain wall, the ventilation effect in the building can be improved, heat accumulation can be prevented, and the comfort of people in the building can be improved.

[0040] The above are only specific embodiments of the present application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A photovoltaic curtain wall, applied to a building, comprising an outer curtain wall and an inner curtain wall disposed opposite the outer curtain wall, wherein the inner curtain wall is the outer wall of the building and window glass disposed on the outer wall, characterized in that: The outer curtain wall includes a plurality of sub-curtain walls, the plurality of sub-curtain walls being spaced apart along a first direction, the first direction being parallel to the extension direction of the inner curtain wall, and each of two adjacent sub-curtain walls along the first direction being provided with an air outlet, a partition assembly being provided between each sub-curtain wall and the inner curtain wall, and the air outlet on the sub-curtain wall being located on a side of the partition assembly corresponding to the sub-curtain wall facing the previous sub-curtain wall; A gas channel is formed between each of the sub-curtain walls, each of the partition components and the inner curtain wall. External gas enters the gas channel through the gap between two adjacent sub-curtain walls, and the gas in the gas channel is discharged through the gas outlet.

2. The photovoltaic curtain wall according to claim 1, characterized in that: The photovoltaic curtain wall further includes a plurality of regulating structures. Along the first direction, one regulating structure is provided between each two adjacent sub-curtain walls. The regulating structures are used to control the amount of external gas entering the gas channel.

3. The photovoltaic curtain wall according to claim 2, characterized in that: The regulating structure is a shutter or a porous plate.

4. The photovoltaic curtain wall according to claim 2, characterized in that: The partition assembly includes a guide plate; Along the first direction, in every two adjacent sub-curtain walls, the first end of the deflector corresponding to the preceding sub-curtain wall is connected to the inner curtain wall, and the second end of the deflector is connected to the side of the preceding sub-curtain wall facing the next sub-curtain wall, and in the projection of the inner curtain wall, the first end of the deflector is located above the second end of the deflector.

5. The photovoltaic curtain wall according to claim 4, characterized in that: The partition assembly also includes fireproof cotton, the first end of the fireproof cotton is connected to the inner curtain wall, the second end of the fireproof cotton is connected to the sub-curtain wall, the fireproof cotton is located between the air outlet and the guide plate, and an enclosed space is formed between the fireproof cotton and the guide plate.

6. The photovoltaic curtain wall according to any one of claims 1 to 5, characterized in that: The photoelectric curtain wall also includes multiple brackets and multiple first connecting members. Each sub-curtain wall corresponds to at least one bracket. The first end of the bracket is used to install the sub-curtain wall, and the second end of the bracket is connected to the inner curtain wall through the first connecting member.

7. The photovoltaic curtain wall according to claim 6, characterized in that: The photovoltaic curtain wall further includes a plurality of second connecting members, wherein a first end of the second connecting member is connected to the sub-curtain wall, and a second end of the second connecting member is connected to the inner curtain wall.

8. The photovoltaic curtain wall according to any one of claims 1 to 5, characterized in that: The sub-curtain wall is provided with a first photovoltaic glass assembly and a second photovoltaic glass assembly, and the size of the first photovoltaic glass assembly is larger than that of the second photovoltaic glass assembly.

9. A building, characterized in that: A photovoltaic curtain wall as claimed in any one of claims 1 to 8.

Images