DE102010027046A1 - Outer building element for receiving wide solar element for collecting and/or converting solar energy, has molded body adapted by outer shape to installation location and by inner shape to components to be received and covering - Google Patents

Abstract

The element (1) has a frame (3) made from concrete, and formed as a single-component, autonomous molded body (4), which is adapted by its outer shape to a installation location and by its inner shape (42) to components to be received and a light-permeable covering (5). The molded body comprises a groove with an elastic seal that forms a sealing between the light-permeable covering and the frame, and is made of a glass-fiber reinforced concrete with a continuous base (44). A cable is section-wise completely arranged in the body for transmission of electricity produced by solar cells.

Description

The invention relates to a building exterior element for receiving a solar element for collecting and / or converting solar energy with at least one frame based on concrete. The building exterior element can accommodate both solar elements that convert sunlight into heat and solar elements that convert sunlight into electricity.

Commercially available solar modules today include a transparent cover facing the sun, an absorber that converts the sun's rays into thermal energy or electrical energy, and an insulating layer disposed under the absorber. This layer structure is supported on its outer border by a frame, which consists mostly of extruded aluminum profiles. This type of construction has some disadvantages.

The entire load on such a solar module by its own weight, wind, snow and other acting forces is absorbed by the frame, which therefore has a solid and torsionally rigid construction. Due in part to the use of extruded aluminum profiles, the cost of such solar modules is high. For large-area solar modules, the load bearing may eventually lead to a deflection.

Another problem arises when mounting solar modules above a roofing, usually with support on the roofing. Usual solar modules have a height of up to 14 cm and by lateral surfaces are attack surfaces for weather-related forces such as snow and wind given. The snow and wind loads lead to an increased force on the frame structure and can lead to a failure of the frame structure and high stress at joints with the roofing.

Today's solar modules have significant disadvantages in a fire. For example, all combustible elements of a solar module contribute to the band load of a building, in particular of a roof. In particular, plastics can emit hazardous vapors in a fire. On the other hand, in solar cells connected in series, up to a few hundred volts DC are applied to the connection points of the solar cells. These high DC voltages represent a potential hazard for firefighters and other helpers, especially when fighting a fire with water. The fire brigade is therefore sometimes even forced to burn a burning building with rooftop solar panels controlled instead of extinguishing the fire. In the event of a fire, therefore, buildings with solar modules can be subject to greater damage than other buildings.

From the EP 2 088 387 A2 is a receiving body for a solar element known, wherein the receiving body is made of concrete. In order to attach the receiving body to a building additional fastening sections are necessary. In addition, the receiving body must be integrated with other means form-fitting at a mounting location.

The object of the invention is at least partially to solve the problems described with reference to the prior art and in particular to provide a building exterior element for receiving a large-area solar element, which offers only low attack surfaces for snow and wind loads, low in its production and easy is to be integrated at a place of installation.

The objects are achieved with a building exterior element according to claim 1. Further advantageous embodiments of the building exterior element are given in the dependent formulated claims and described in more detail below. The features listed individually in the claims and the description can be combined with one another in any technologically meaningful manner and can be supplemented by explanatory facts from the description, whereby further embodiments of the invention are shown.

The objects are achieved by a building exterior element for receiving a solar element for collecting and / or converting solar energy with at least one frame based on concrete, wherein the frame is formed as a one-piece, self-supporting molded body, both in its outer shape to the installation site is adapted in its inner shape to the male components and a translucent cover.

Solar elements include thermosolar systems or solar cells that convert sunlight into heat or electricity and deliver it to a consumer. A combination of thermal solar systems and solar cells arranged in the building exterior element also encompasses the invention. Preferably, a heat insulation layer is provided on the side facing away from the cover side of the solar element.

The molded body is preferably cast from concrete, so that a simple production, especially in mass production, is possible at low cost. About the design of the molded body is a Wide variation of the shape and the surface profile of the molding possible. The outer shape of the molding can be adapted to the installation site. In particular, in an in-roof variant in which the building exterior element replaces a part of the roof tiles of a roof, the exterior shape can be designed such that the building exterior element rests on and / or under the adjacent roof tiles. In a Aufdachanbringung the building exterior element, so the arrangement on the roof tiles of a roof, fastening devices may be provided on the underside of the molding. When installing the building exterior element on a flat roof holding elements, for example in the form of recesses on the back, be provided for a frame in the molding. If the building exterior element is to be used as a facade element, then the outer shape can be designed with a flat surface profile. Likewise, the inner shape of the male components can be designed. On the one hand, accommodating possibilities for fastening means of the solar elements can be preformed or recesses for receiving heat exchanger tubes, in particular in meandering form, can be provided.

According to the invention, the shaped body is designed in such a way that a light-permeable cover can be received in a dimensionally accurate manner. The translucent cover allows an almost unimpaired entry of sunlight into the building exterior element, which is preferably designed as a glass pane. Since glass and concrete have similar coefficients of expansion, there are no critical stresses in the materials even with temperature fluctuations.

The exterior building element according to the invention can be adapted to different uses by simple measures during the manufacturing process. Thus, the building exterior element can be provided only for the use of solar thermal systems or solar cells, but also for a combined application of the two solar element designs.

Preferably, the shaped body has at least one first groove with an elastic seal, which forms the seal between the translucent cover and the frame. The elastic seal, which can also independently of the groove form a connection between the molded body and the translucent cover, which preferably consists of a silicone, is at least partially embedded in the first groove and completely circumscribing the molded body. The translucent cover is held by the permanently elastic seal on the molding and provides a connection between the molding and translucent cover, so that penetration of liquid through the joint between the molding and cover is not possible. The insertion of a cover in a not yet solidified sealing material, in particular silicone or a permanently elastic silicone adhesive is possible and can be used for easy attachment of the cover.

It is advantageous if the molded body is made of a glass fiber reinforced concrete with a bending / tensile strength of 6 to 12 N / mm ² and a compressive strength of 70 to 90 N / mm ^{2 is} equipped.

Concrete as a material has the advantage that it is weather-resistant for at least 50 years and that it absorbs moisture within certain limits or lets it through, so that, for example, moisture can be removed from the interior to the outside. Due to the mechanical properties of the concrete, the building exterior element according to the invention is self-supporting.

Concrete is also dyeable in different colors and can be aesthetically adapted to the intended location.

Although a concrete building exterior element is comparatively heavier than an element with an aluminum frame, the load on a roof construction for in-roof installation can be of the same order as for a roof-mounted lighter element, since the roof tiles can be replaced by the building exterior element. In a setup on a flat roof, in which a building exterior element must be aligned with a frame to the sun, you need in the building exterior element according to the invention a lower additional load to protect it against possible attacking forces, such as wind, falling over or moving. By glass fiber reinforced concrete, it is meant that from 0.5% to 3% by volume of the concrete mix consists of an alkali resistant glass fiber. The glass fibers are usually as short fibers with a length of z. B. a few millimeters ago. With glass fiber reinforced concrete also stable wall thickness of only a few millimeters can be achieved.

Moreover, it is advantageous if solar cells can be arranged on a side of the molded body facing the sun. The glass-fiber-reinforced concrete proposed here can be shaped with a particularly smooth surface, so that solar cells can be applied directly to it. Solar cells are usually sensitive to unevenness of their surface on which they are mounted and in particular concrete elements for receiving solar cells could not previously be produced with sufficiently smooth surfaces. With the building exterior element according to the invention, this disadvantage can be overcome.

In a further advantageous embodiment of the invention, the molded body is made with a continuous floor. A continuous floor protects the exterior of the building from the ingress of moisture from the back and provides additional stability.

Furthermore, it is advantageous if the shaped body is reinforced in partial areas, in particular at its bottom with a glass fiber fabric. Glass fiber fabric further increases the bending / tensile strength compared to the short fibers blended into the concrete. Thus, a molded body with even lower wall thickness is possible with similar mechanical properties.

In a preferred embodiment variant of the building exterior element for the generation of electrical energy, at least one cable for transmitting the energy generated by solar cells is arranged completely in the molded body, in particular cast in, at least in partial sections. In particular, the cable can be arranged completely in the shaped body, wherein only the cable ends are led out for the connection of further components from the shaped body.

By using concrete, the fire load of the building exterior element is reduced compared to conventional solar modules. In addition, the arrangement of plastic-insulated cables in the concrete prevents the plastic from burning quickly in a fire. In this way, the fire load is further reduced and reduces the emission of harmful gases.

In most cases, several solar modules are arranged on a roof next to and / or above each other. According to the invention, therefore, such connectors are provided on the sides of the molding, which allow the simplest possible and space-saving mating of modules. This concerns electrical connections, but also hydraulic connections. Basically, there is the possibility to provide only sockets at the connection points in the molding, which are then connected by suitable double-sided connector. Alternatively, mutually plug and socket can be provided on the molding, which then allow a direct mating of the solar modules. To compensate for linear expansion of the interconnected building exterior elements due to weather fluctuations, the connectors are preferably movable in three spatial directions. It is also particularly advantageous if the connectors are designed so that no water can get to electrically conductive parts and the parts used for this are also flame retardant. In this case, the risk of electric shock for firefighters is prevented by the ingress of extinguishing water in case of fire. There are also no more cables open, which could be ignited in a fire and lose their insulation.

As a result of the plug-in connections described, a plurality of solar modules can be electrically connected to one another, but this alone can not be used to achieve a complex interconnection in series and / or in parallel and a connection to other electrical or electronic components. Therefore, a terminal box is provided in each solar module, in which a desired interconnection of the interconnected modules can be made. In order to protect this junction box in case of fire and water, a terminal box receptacle is provided in the molded body of the building exterior element, which can be configured as a suitably shaped cavity. If necessary, a junction box is integrated in this cavity and protected by a lid against fire and spray. The terminal box, which may also contain electronic components, serves as a connection point between solar cells in the building exterior element and other building exterior elements or consumers. Its sheltered housing reduces the fire load and the risk of electrical shock from fire extinguishing in case of fire. With the building exterior element according to the invention can thus be provided an array of solar cells, which does not pose a threat to firefighters by electric shock in case of fire.

It is also advantageous if a receiving element for an absorption body is integrated in the shaped body. A receiving element is for example a cylindrical exception in the context of the shaped body, through which a line for the solar element can be placed. Such a receiving element is integrated directly during the manufacturing step during casting. But it can too. a hook can be integrated into the molded body, so that a solar element can be fixed to these hooks later in the building exterior element.

It is also advantageous if a line of the solar element for a heat transfer medium, at least in partial sections, is arranged completely in the molded body, in particular cast. The line of a thermosolar element can in particular. be poured in a layer of concrete, so that even in the production of the molded body, the solar element is integrated in the building exterior element.

Alternatively, it is also possible and advantageous for a modular exterior building element, a cast in a concrete sheath line to design as an absorption module for insertion into the molding. Then it can be decided as needed whether an absorption module and / or a photovoltaic module is used.

It is particularly advantageous if in the bottom of the molding a pipe z. B. is cast in steel or a plastic. The dimensioning of the pipeline is designed so that under laboratory conditions at a radiation of 1000 W / m ² with a sun-like spectral distribution a heat output of at least 550 W / m ² is absorbed by a flowing in the pipes heat medium, ie at a surface of Building exterior element of z. B. 3 m ² , the pipes are designed for heat dissipation of over 1500 W. Steel has the particular advantage that it has a coefficient of expansion similar to that of concrete. It is also advantageous if the layer surrounding the pipe concrete to the bottom of the molded body is additionally protected by an insulating layer from heat loss. If a fluid line is completely poured into the bottom of the molding, in turn, a smooth surface can be produced, which can then additionally carry solar cells. In this way it is possible to operate both a thermosolar system, which can be integrated in the bottom of the molding, as well as a photovoltaic system simultaneously in the building exterior element. Various synergy effects can be used to avoid overheating of the respective systems, but still use as much solar energy as possible.

According to a further preferred embodiment of the invention, at least one ventilation opening is integrated into the molded body, preferably an adjustable ventilation opening. Such an adjustable ventilation opening makes it possible to supply ambient air or specially cleaned and dehumidified air to the interior of the building exterior element. In this way, condensed moisture can be removed from the building exterior element, for example, in the morning hours, or cooler ambient air can be introduced in the event of an impending overheating. Adjustable ventilation openings can be arranged both in the frame and in the bottom of the molded body.

It is particularly advantageous if the shaped body has a height of less than 120 mm, preferably less than 100 mm. Flat building exterior elements provide a low contact surface for wind and snow loads and can be produced in particular by the use of concrete.

In a further development of the invention, it is proposed that at least one height-adjustable support element is arranged below the shaped body. Such a support element supports the molding after installation and thus prevents bending of the molding. This is particularly useful when the building exterior element is constructed as an in-roof variant, where it replaces a large number of roof tiles and extends over several rows of roof tiles. In this case, it may be that the roof is slightly curved and thus the building exterior element does not rest evenly. Supporting elements in this case evenly distribute the loads acting on the roof.

Moreover, it is particularly advantageous if the cover has a coating which has a transmission dependent on the irradiation intensity for at least certain spectral ranges of the sunlight, in particular for infrared radiation or ultraviolet radiation. Such a coating of the cover prevents excessive heating of the building exterior element with very large solar radiation.

In a further embodiment it is provided that at least one second groove is formed in the shaped body, which is suitable as a receptacle for fastening means and / or sheet metal coverings. In such a groove, for example, a clip intervene, which connects the building exterior element with a building. By sheet metal covering is meant a sheet metal element that connects the exterior building element with roof tiles, bridging gaps between the building exterior element and the building and thus reducing attacking a wind or snow load. Furthermore, penetration of rainwater under the building exterior element is avoided by such a sheet metal element.

In a particularly preferred embodiment of the invention, the shaped body is designed at an upper edge so that it can be fastened under an upwardly adjacent row of roof tiles. A so arranged below the roof tiles exterior building element provides weather-related influences little resistance. Rain and snow can pass from the adjacent row of roof tiles on the building exterior element without increased resistance.

In a further particularly preferred embodiment of the invention, the shaped body is designed at a lower edge so that it can be fastened above a row of roof tiles adjoining the lower edge. Such an arrangement of the building exterior element with respect to the downwardly adjacent roof tiles allows rain and snow to be discharged from the building exterior element without increased resistance to the roof tiles. A building exterior element so completely integrated in a roof covering also offers only minimal resistance to wind loads.

In a further preferred embodiment of the invention, the shaped body is designed at lateral edges so that they can be fastened above and / or below laterally adjacent rows of roof tiles. Such a design allows a perfect integration of the building exterior element in a rooftop roof, without this provides increased resistance to wind loads.

In this way, the building exterior element used as a roof element barely offers additional attack surfaces for snow and wind loads. Due to the possibility of replacing a conventional roof covering with a building exterior element, there is also an aesthetically more beautiful integration of the building exterior element into a roof structure.

According to a further aspect of the invention, the use of the exterior building element according to the invention is proposed at least as an in-roof element, roofing element, installation element on a flat roof or façade element

The invention and the technical environment will be explained in more detail with reference to the drawing. It should be noted that the figures show particularly preferred embodiments of the invention, but this is not limited thereto. They show schematically:

1 : Top view of a building external element according to the invention,

2 : Part of a cross section through an embodiment of the building exterior element according to the invention,

3 : Part of a cross section of a further embodiment of the exterior building element according to the invention,

4 : Part of a cross section of an embodiment of the building exterior element according to the invention, and

5 : Part of a cross-section of a further embodiment of the building exterior element according to the invention,

6 in perspective an upper end of a further embodiment of the building exterior element according to the invention,

7 in perspective a connection area of a building exterior element,

8th : Perspective a junction box on the underside of a building exterior element.

1 schematically shows the top view of a building exterior element 1 with a frame 3 that made a shaped body 4 is formed. The molded body 4 has an outer shape 41 and an inner shape 42 which can be adapted to the installation location or to the male components. The molded body shown here 4 has an upper edge 47 on, which is arranged at an in-roof installation below a top-adjacent series roof tiles. A lower edge 48 is designed so that it can be arranged above a row of tiles adjacent to the bottom. Furthermore, the lateral edges 49 a shape such that they can be arranged above or below the laterally adjacent roof tiles. In this embodiment, the shaped body 4 with a floor 44 executed, in which an adjustable ventilation holes 50 is integrated.

2 shows a part of a cross section through an embodiment of the building exterior element 1 , A shaped body 4 indicates its outer shape 41 a second groove 46 on, can engage in the fastener. On the outside shape 41 opposite side has the molding 4 an inner shape 42 on, to the male components, in particular an absorbent body 9 , can be adjusted. On the sun-facing upper side, the shaped body 4 a first groove 43 on, in which a seal 6 is arranged. The molded body 4 is on its top through a translucent cover 5 covered with the seal 6 is sealed to the building exterior element inside. The building exterior element has a height H.

3 schematically shows a part of a cross section of another embodiment of the building exterior element 1 , The building exterior element shown here is the building exterior element 1 of the 2 similar, so that here only the differences will be discussed, wherein like reference numerals describe like elements. The building exterior element 1 has at its lower side a height-adjustable support element 7 on which. offers a further support surface for the building exterior element on a roof covering, a roof beam or a roof batten. On the inside is a solar element 2 arranged, in this case a thermosolar system having a tube. In the tube circulates a heat transfer medium, which may be connected to an external heat exchanger, so that a consumer medium can be heated. The pipe is placed in the concrete, leaving the solar element 2 during the manufacturing process in the building exterior element 1 can be integrated. Preferred is between the solar element 2 and the floor 44 an insulation layer 8th arranged, which is a heat transfer from the solar element 1 to the environment prevented. The molded body 4 has a bottom in this embodiment 44 on, which extends over the entire bottom of the molding.

4 shows a further embodiment of the building exterior element 1 in a partial cross-section. In turn, it will be based solely on the differences from the embodiment according to 2 pointed. The molded body 4 indicates at a lateral edge 49 an outer shape 41 on, which allows laterally adjacent roof tiles on the side edge 49 or the outer shape 41 store, so that an integration of the building exterior element in a roof covering a roof is made possible. Further, in the inner mold 42 a receiving element 45 in the shaped body 4 integrated, which is adapted to receive solar elements.

5 shows yet another embodiment of the building exterior element 1 in a partial cross-section. This in 5 illustrated building exterior element 1 is in the 3 similar, so that at this point only the differences are described. Unlike the in 3 illustrated embodiment has this building exterior element 1 no insulation layer 8th on. On the sun-facing side of the absorption body 9 who is a pipe 2 for a solar thermal system are solar cells 10 arranged to convert the sunlight into electrical energy. The pipe 2 can also cause a coolant that the solar cells 10 keeps it at the lowest possible temperature. With such an embodiment of the building exterior element, it is possible to generate electrical energy and / or thermal energy for consumers from the sunlight. A higher efficiency of energy conversion can thus be achieved. At an adjustable ventilation opening, not shown here 50 Furthermore, an additional heat exchanger can be connected, because in the building exterior element 1 heated air is supplied, whereby the energy balance is further increased.

6 shows an upper portion of another embodiment of a building exterior element according to the invention 1 with a frame 3 from a shaped body 4 in a perspective view. The inner shape 42 points to the ground 44 reinforcing structures 16 on that the building exterior element 1 give a higher mechanical rigidity and as a support surface for solar panels 2 can serve. In addition, the inner shape has a connection box receptacle 14 on, being a junction box 13 for electrical connections on an outside of the building exterior element 1 in the connection box receptacle 14 is arranged. For the passage of electrical cables from a solar element 2 to the junction box 13 are recesses 17 in the connection box receptacle 14 arranged. From the connection box receptacle 14 leads a cable receptacle 15 to the lateral edges of the building exterior element 1 , In the cable receptacle 15 is a cable 11 arranged, in particular cast. At the out of the frame 3 emerging end of the cable 11 is a connector not shown 12 mounted, which is movable in the three spatial directions, to a relative movement of two connected building exterior elements 1 to be able to compensate. The plug connection 12 is preferred as in the frame 3 built-in socket, leaving an exterior building element 1 can be easily connected with other building exterior elements by not shown double-sided connector.

Solar cells can thus in the building exterior element 1 be arranged, with their electrical connections through recesses 17 to a junction box 13 can be performed in which electrical circuits can be arranged. About the cables 11 can the junction box 13 and thus the solar elements 2 be electrically connected to other building exterior elements or consumers.

7 and 8th show detailed views of the embodiment of the building exterior element 1 according to 6 , In 7 is the corner of a building exterior element 1 with a frame 3 from a shaped body 4 shown. The inner shape 42 has a cable receptacle 15 on, in the at least one cable 11 to be led. The cable 11 is with its insulation in the cable receptacle 15 arranged. On the outside of the building 1 emerging end of the cable 11 is a plug connection 12 attached, over which the building exterior element 1 can be electrically connected to other building exterior elements. The connector, not shown 12 should allow a movement in three spatial directions to compensate for relative movements of adjacent building exterior elements.

The inner shape 42 also has a fastener 18 for receiving a tubular absorbent body 9 on that through by execution 19 from the building exterior element 1 guided and so with other building exterior elements 1 or a consumer can be connected. In or at the execution 19 can also be a ventilation opening, possibly provided with a holder for a filter element. The fastener 18 is as a projection in the inner shape 42 executed with a tubular recess. In the tubular recess is a radially encircling groove, wherein in the groove, a holding element such as a spring is arranged.

The illustration shows that the building exterior element 1 with simple means during manufacture for different types of Solar modules can be designed. When molding the frame 3 For example, by inserting or omitting certain inserts, cables may be cast in as required and connectors prepared or not. The same applies to the connection box recess and hydraulic connections or ventilation openings.

8th shows a detailed view of the connection box receptacle 14 in the inner mold 42 of the building exterior element 1 is arranged. Through the recesses 17 in the connection box receptacle 14 can electrical wires from a solar element 2 to the junction box 13 be guided. The electrical connection box 13 can turn over cables 11 in the cable receptacle 15 a connection possibility on the outside of the building exterior element 1 Offer.

9 shows a detailed view of the connection box receptacle 14 on the back of the building exterior element 1 the embodiment in 6 , The connection box receptacle 14 makes a recess in the ground 44 and thus also in the outer shape 41 of the building exterior element 1 in the connection box receptacle 14 is the connection box 13 z. B. fixed non-positively and / or positively. The connection box 13 can have electronic circuits that use a solar element 2 on the inside of the building exterior element 1 connected is. Furthermore, the connection box 13 via cable 11 from outside the building exterior element 1 contactable. The cables 11 Be in the cable receptacle 15 to the outside of the building exterior element 1 guided. The connection box receptacle 14 is closed with a protective element, not shown, so that at least no splash water to the junction box 13 can penetrate.

The building exterior element according to the invention allows use as an in-roof element, roofing element, facade element or installation element on a flat roof, where it is weather-resistant due to its materials and cost-effective in its production. By using concrete, the fire load of a building with a building exterior element according to the invention is reduced on the one hand. On the other hand, the arrangement of the cable with its insulation in the frame prevents the burning of the insulation, so that the emission of harmful gases is reduced and not quickly exposed in a fire electrically conductive surfaces that could come into contact with extinguishing water.

LIST OF REFERENCE NUMBERS

1

Building exterior member

2

solar element

3

frame

4

moldings

5

cover

6

poetry

7

support element

8th

insulation layer

9

absorbent body

10

solar cell

11

electric wire

12

connector

13

junction box

14

Junction box recording

15

cable storage

16

reinforcing structure

17

recess

18

fastener

19

execution

41

external form

42

interior shape

43

first groove

44

ground

45

receiving element

46

second groove

47

upper edge

48

lower edge

49

lateral edges

50

adjustable ventilation openings

H

height

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The 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

• EP 2088387 A2 [0006]

Claims (10)

Building exterior element ( 1 ) for receiving a solar element ( 2 ) for collecting and / or converting solar energy with at least one frame ( 3 ) based on concrete, the frame ( 3 ) as a one-piece, self-supporting molded body ( 4 ) is formed, which in both its outer shape ( 41 ) to the installation site as well as in its inner shape ( 42 ) to the male components and a translucent cover ( 5 ) is adjusted. Building exterior element ( 1 ) according to claim 1, wherein the shaped body ( 4 ) at least one first groove ( 43 ) with an elastic seal ( 6 ), the sealing between the translucent cover ( 5 ) and the frame ( 3 ). Building exterior element ( 1 ) according to one of the preceding claims, characterized in that the shaped body ( 4 ) of a glass fiber reinforced concrete having a bending / tensile strength of 6 to 12 N / mm ² and a compressive strength of 70 to 90 N / mm ² . Building exterior element ( 1 ) according to one of the preceding claims, wherein the shaped body ( 4 ) with a continuous floor ( 44 ) is made. Building exterior element ( 1 ) according to one of the preceding claims, wherein at least one cable ( 11 ), in particular for the transmission of the electrical energy generated by solar cells, at least in partial sections completely in the shaped body ( 4 ), in particular cast, is. Building exterior element ( 1 ) according to claim 5, wherein at least one electrical connector ( 12 ) at an exit point of the cable ( 11 ) from the shaped body ( 4 ) is arranged, in particular a protected against splashing water and flame retardant. Building exterior element ( 1 ) according to one of the preceding claims, wherein an externally accessible electrical connection box ( 13 ) in a connection box receptacle ( 14 ) of the shaped body ( 4 ) is integrated, in particular protected against splashing water and fire. Building exterior element ( 1 ) according to one of the preceding claims, wherein a line of the solar element ( 2 ) for a heat transfer medium at least in partial sections completely in the shaped body ( 4 ), in particular cast, is. Building exterior element ( 1 ) according to one of the preceding claims, wherein at least one second groove ( 46 ) in the molded body ( 4 ) is formed, which is suitable as a receptacle for fasteners and / or sheet metal coverings. Building exterior element ( 1 ) according to one of the preceding claims, which is suitable as a roof element, wherein the molded body ( 4 ) at an upper and / or lower edge ( 47 . 48 ) is designed so that it can be mounted under or above a top or bottom adjacent row of roof tiles.

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