Roof and / or facade lightweight construction element

Abstract

Roof and / or facade lightweight element with a support plate (1) having a cross-section with a wave shape, a capillary tube mat (2) on the support plate (1) and at least one photovoltaic element on the capillary tube mat (2), such that channels (4) are located between the wave crests of the support plate (1) and the capillary tube mat (2) with the photovoltaic element.

Description

[0001] The invention relates to a roof and / or facade lightweight construction element.

[0002] A metal solar roof and wall element is known from DE 198 51 230 A1. The translucent cover of a solar collector and / or a photovoltaic solar module is firmly attached to the top of a longitudinally profiled metal panel. The longitudinal channels can be used as conduits for liquid or gaseous media to transport solar heat. Heat-insulating materials can also be incorporated into the channels. To use these channels, they must be impermeable to the respective medium. This must also be ensured when combining multiple elements. Furthermore, this element does not provide continuous thermal insulation.

[0003] The publication DE 20 2006 018 592 U1 contains an electrothermal solar module. Photovoltaic elements are arranged on a base plate. The base plate is further surrounded by a frame made of a U-shaped profile, the open side of which faces the sun and is covered with a translucent transparent panel. Fluid flowing within the profile is heated by solar radiation. The two functions are separated from each other in the surface. In particular, the centrally arranged photovoltaic elements are not cooled. No thermal insulation is provided.

[0004] DE 20 2011 100 503 U1 discloses a lightweight roof and facade element comprising a support plate with at least one structure for increasing flexural rigidity, a core made of a foamed plastic as a heat-insulating material on the support plate, and at least one photovoltaic element on the core. Furthermore, the element has at least one conduit for a cooling medium for cooling the photovoltaic element in the core. This creates a sandwich construction with the support plate, the core, and the photovoltaic element. The conduits are embedded in the core.

[0005] The invention defined in claim 1 is based on the object of providing an energy-converting and easily implemented roof and / or facade element.

[0006] This problem is solved by the features listed in claim 1.

[0007] The roof and / or facade lightweight construction element is characterized by its simple implementation and energy conversion.

[0008] For this purpose, the roof and / or facade lightweight construction element has a support plate with a cross-section with a wave shape, a capillary tube mat on the support plate and at least one photovoltaic element on the capillary tube mat, so that channels are located between the wave crests of the support plate and the capillary tube mat with the photovoltaic element.

[0009] The roof and / or facade lightweight construction element represents a building envelope element that combines several functions for energy conversion and energy enhancement of solar radiation. Photovoltaic elements are known as thin-film and thick-film solar cells, with several interconnected solar cells forming a solar module. The solar module converts the sun's radiation into electrical energy. As temperature rises, the energy conversion decreases, so cooling is advantageously provided. For this purpose, the roof and / or facade lightweight construction element has the capillary tube mat for conducting a liquid medium and the channels for conducting air. These are advantageously connected to the solar module so that the flowing medium and / or the flowing air cools the solar module and / or is heated by the heat of the solar radiation.The medium and / or air heated in this way can advantageously be used to control the temperature of a building and / or storage facility.

[0010] Advantageously, the roof and / or facade lightweight construction element essentially comprises only the support plate, the capillary tube mat, and the solar module. This allows for a simple implementation, with these elements fulfilling multiple functions. The support plate ensures the stability of the roof and / or facade lightweight construction element and forms the channels for air flow. The capillary tube mat cools the solar module and, in conjunction with the solar module, heats the liquid medium. The solar module serves to convert solar radiation into electrical energy and to heat the air flowing in the channels and / or the liquid medium flowing in the capillary tube mat. This implementation results in a simple and compact structure.

[0011] The roof and / or facade lightweight construction element can be easily combined with other such elements, whereby the channels and the capillary tube mats are connected to each other.

[0012] Advantageous refinements of the invention are set forth in the following developments and embodiments. These can develop the roof and / or facade lightweight construction element individually or in combination.

[0013] In a further development, the photovoltaic element can be a solar module or a component of a solar module.

[0014] In one embodiment, the support plate can in particular be a trapezoidal sheet made of a metal.

[0015] In one embodiment, a metal sheet can be arranged with the capillary tube mat on the support plate so that the capillary tube mat is located between the metal sheet and the photovoltaic element. This allows for easy implementation of the roof and / or facade lightweight construction element. The capillary tube mat is connected to the metal sheet, with the metal sheet essentially having the same dimensions as the solar module and the support plate. These components can thus be easily joined together using, for example, an adhesive. At the same time, the metal sheet serves to improve heat distribution in the roof and / or facade lightweight construction element.

[0016] In one embodiment, the metal sheet can have a corrugated shape, with the capillary tubes of the capillary tube mat advantageously located in the corrugation troughs of the metal sheet. This increases the stability of the roof and / or facade lightweight construction element.

[0017] For this purpose, the metal sheet can be designed as a trapezoidal sheet. This trapezoidal sheet leads to improved heat distribution in the roof and / or facade lightweight construction element. Furthermore, flat connecting surfaces are provided between the supporting plate and the metal sheet, as well as between the metal sheet and the solar module. This advantageously ensures strong connections using flat adhesive layers.

[0018] In one embodiment, the diameters of the capillary tubes of the capillary tube mat can be equal to or smaller than the depth of the troughs of the metal sheet, so that the metal sheet with the capillary tubes can be easily connected to the solar module.

[0019] In one embodiment, the capillary tubes of the capillary tube mat can be made of a metal or a plastic.

[0020] In a further development, the capillary tubes of the capillary tube mat can have interconnecting main tubes as connections for the supply and discharge of a fluid medium. The fluid medium thus serves as a cooling medium for the solar module. The thus heated cooling medium can be used to heat at least one other medium.

[0021] In a further development, the ducts can serve as rear ventilation for the photovoltaic element or the metal sheet. For this purpose, they are connected, in particular, to an air-conveying device and a heat exchanger or storage unit, so that the heat from solar radiation and / or the photovoltaic element can be further utilized.

[0022] In one embodiment, the support plate can be located on a layer of mineral wool and / or plastic, so that thermal insulation is provided.

[0023] In one embodiment, the layer of mineral wool and / or plastic can be located on at least one vacuum insulation panel arranged in a tray. The vacuum insulation panel provides additional thermal insulation. Vacuum insulation panels, also known as vacuum insulation boards, are panels that utilize vacuum thermal insulation. Essentially, they consist of a sealed shell with a supporting core that must be evacuatable and withstand the air pressure acting on the vacuum insulation panel. The supporting core can be made of open-pore plastic foams, microfiber materials, fumed silica, or perlite. Evacuation reduces the overall thermal conduction of the material due to the suppression of gaseous heat conduction and convection, as well as due to the porosity of the material and the associated suppression of radiant heat transfer. These effects achieve high thermal insulation.

[0024] An embodiment of the invention is shown in principle in the drawings and is described in more detail below.

[0025] They show: Fig. 1 a roof and / or facade lightweight construction element in a sectional view, Fig. 2 a roof and / or facade lightweight construction element with a metal sheet in a sectional view and Fig. 3 a roof and / or facade lightweight construction element with a vacuum insulation panel in a sectional view.

[0026] A roof and / or facade lightweight construction element essentially consists of a supporting plate 1, a capillary tube mat 2 and a solar module 3 with at least one photovoltaic element.

[0027] The Fig. 1 shows a roof and / or facade lightweight construction element in a basic sectional view.

[0028] To form the roof and / or facade lightweight construction element, the support plate 1 with a wave-shaped cross-section, the capillary tube mat 2, and the solar module 3 are arranged one after the other. The support plate 1 can, in particular, be a trapezoidal sheet. The individual components are connected to one another by adhesive bonds. With such an arrangement, channels 4 are located between the wave crests of the support plate 1 and the capillary tube mat 2 with the solar module 3. Media flowing in the capillary tubes of the capillary tube mat 2 and flowing in the channels serve to cool the solar module 3. The media heated in this way can be used to heat other media, in particular a heating system and / or at least one storage unit. The capillary tubes of the capillary tube mat 2 have interconnecting main pipes as connections for the supply and discharge of a flowable medium. The capillary tubes of the capillary tube mat 2 are made of a metal or a plastic.

[0029] The Fig. 2 shows a roof and / or facade lightweight construction element with a metal sheet 5 in a basic sectional view.

[0030] In one embodiment, a metal sheet 5 with the capillary tube mat 2 is arranged on the support plate 1 such that the capillary tube mat 2 is located between the metal sheet 5 and the solar module 3. The metal sheet 5 can advantageously have a corrugated shape, with the capillary tubes of the capillary tube mat 2 located in the troughs of the metal sheet 5. The metal sheet 5 can be a trapezoidal sheet. The diameters of the capillary tubes of the capillary tube mat 2 are equal to or smaller than the depth of the troughs of the metal sheet 5. Additional channels 6 can be formed between the solar module 3 and the metal sheet 5.

[0031] The Fig.3 shows a roof and / or facade lightweight construction element with a vacuum insulation panel 8 in a basic sectional view.

[0032] In a further embodiment, the support plate 1 is located on a layer 7 of mineral wool and / or a plastic. Furthermore, the layer 7 of mineral wool and / or plastic is arranged on at least one vacuum insulation panel 8 arranged in a trough 9. QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] DE 198 51 230 A1

[0002] DE 20 2006 018 592 U1

[0003] DE 20 2011 100 503 U1

[0004]

Claims

[1] Roof and / or facade lightweight construction element with a support plate (1) with a cross-section with a wave shape, a capillary tube mat (2) on the support plate (1) and at least one photovoltaic element on the capillary tube mat (2), so that channels (4) are located between the wave crests of the support plate (1) and the capillary tube mat (2) with the photovoltaic element. [2] Roof and / or facade lightweight construction element according to claim 1, characterized by that the photovoltaic element is a solar module (3) or a component of a solar module (3). [3] Roof and / or facade lightweight construction element according to at least one of claims 1 and 2, characterized by that the support plate (1) is a trapezoidal sheet made of metal. [4] Roof and / or facade lightweight construction element according to at least one of claims 1 to 3, characterized bythat a metal sheet (5) with the capillary tube mat (2) is arranged on the support plate (1) in such a way that the capillary tube mat (2) is located between the metal sheet (5) and the photovoltaic element. [5] Roof and / or facade lightweight construction element according to at least one of claims 1 to 4, characterized by that the metal sheet (5) has a wave shape and that the capillary tubes of the capillary tube mat (2) are located in wave troughs of the metal sheet (5). [6] Roof and / or facade lightweight construction element according to at least one of claims 1 to 5, characterized by that the metal sheet (5) is a trapezoidal sheet. [7] Roof and / or facade lightweight construction element according to at least one of claims 1 to 6, characterized by that the diameters of the capillary tubes of the capillary tube mat (2) are equal to or smaller than the depth of the corrugation troughs of the metal sheet (5). [8] Roof and / or facade lightweight construction element according to at least one of claims 1 to 7, characterized by that the capillary tubes of the capillary tube mat (2) are made of a metal or a plastic. [9] Roof and / or facade lightweight construction element according to at least one of claims 1 to 8, characterized by that the capillary tubes of the capillary tube mat (2) have interconnecting main tubes as connections for the supply and discharge of a flowable medium. [10] Roof and / or facade lightweight construction element according to at least one of claims 1 to 9, characterized by that the channels (4) are a rear ventilation of the photovoltaic element or the metal sheet (5). [11] Roof and / or facade lightweight construction element according to at least one of claims 1 to 10, characterized by that the support plate (1) is located on a layer (7) of mineral wool and / or plastic. [12] Roof and / or facade lightweight construction element according to at least one of claims 1 to 11, characterized by that the layer (7) of mineral wool and / or plastic is located on at least one vacuum insulation panel (8) arranged in a trough (9).

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