Lightweight, elevated metal structure with a support system for integrating photovoltaic panels for a waterproofed roof terrace

Abstract

The invention is a lightweight metal structure, raised above a waterproofed roof terrace, designed to support a photovoltaic panel integration system. It involves creating a metal structure using cold-rolled galvanized profiles, directly attached to the building's framework by posts that pass through the waterproofing membrane. This structure is designed to accommodate a standard photovoltaic panel integration system, such as those found on carport-type installations.This system will preserve the existing waterproofing (no total removal, but just spot penetrations), partially protect it over time, provide shade on the roof to limit the impact of solar radiation in summer, allow better ventilation of the photovoltaic panels and therefore a higher yield than if they were attached directly to the roof and finally allow the installation of bifacial photovoltaic panels which would benefit from the radiation reflected by the roof.

Description

Title of the invention: Lightweight, elevated metal structure with a support for a photovoltaic panel integration system for a waterproof roof terrace. Technical field

[0001] The field of the present invention lies in the types of supports allowing the integration of photovoltaic panels on industrial roofs of the multi-layer waterproofing type called flat roofs and said inaccessible. The prior art

[0002] Photovoltaic panel integration systems for industrial roofs with multi-layer waterproofing require certain characteristics of the waterproofing system to be installed correctly (load-bearing capacity of the support tray with additional load, Class C insulation, reinforced membrane, etc.). However, most of the time, the existing waterproofing system was not designed with all the associated constraints to accommodate these photovoltaic panel integration systems. Thus, it is often necessary to replace all or part of the system (membrane, insulation, or even the support tray) to meet the technical requirements of existing systems, which is economically and environmentally detrimental. Existing systems also require the panels to be installed in contact with the waterproofing system, which does not allow for proper ventilation of the underside and therefore results in lower system efficiency due to panel overheating. Description of the invention

[0003] The device according to the invention is therefore designed, in order to overcome the drawbacks of other existing systems, to create a load-bearing metal structure made of cold-rolled galvanized steel profiles, raised above the existing waterproofing (1) by more than 80 cm, and directly attached to the building's framework (2) by tubular posts (6) passing through the waterproofing system (1) and sleeved onto suitable anchors (7). Load-bearing crossbeams (4) (made of cold-rolled galvanized steel profiles) will be supported by the posts (6) in the same plane as the main structure of the building. A purlin (5) (also made of cold-rolled galvanized steel profiles) running perpendicular to the crossbeams (4) will be supported by them and connected by means of braces. This structure is designed to accommodate a standard photovoltaic panel integration system (3) such as those found on carport-type installations. Presentation of the figure

[0004] [Fig. 1] representing the installation seen in cross-section in the plan of the main structure of the building. - 1: Sealing complex - 2: Main structure of the building - 3: Photovoltaic panels - 4: Load-bearing crossbeams made of cold-rolled galvanized profiles - 5: Continuous purlins in cold-rolled galvanized profile - 6: Support posts passing through the waterproofing system - 7: Metal anchors for connection to the main structure of the building - 8: Galvanized metal braces connecting the spar to the crossbeams Description of a method of implementation

[0005] Metal anchor brackets (7) are installed on the main structure of the building (2) on the underside of the waterproofing system (1). The system is drilled at the anchor points and to the dimensions of the through posts (6) to sleeve the latter onto the metal anchors (7). The drilling and the posts (6) are then sealed with upstands compatible with the type of membrane. The cold-formed cross members (4) are bolted to the posts (6), and then the continuous purlins (5) are bolted to the cross members (4) using spacers (8). Finally, the photovoltaic panel integration system (3) is installed perpendicular to the purlins (5) to drain rainwater. Advantages of the invention

[0006] This installation will allow: - to preserve the existing seal (1) (no complete removal, but just spot penetrations) - to partially protect it over time (from weather, UV rays, etc.) - to provide shade on the roof and limit the impact of solar radiation in summer - to allow better ventilation of the photovoltaic panels (3) and therefore a higher yield than if they were affixed directly to the roof like current systems - to be able to consider the installation of bifacial photovoltaic panels which would benefit from the radiation reflected by the roof. Potential industrial applications

[0007] Thus our concept is intended to be economically (better performance of photovoltaic panels) and ecologically (less waste and carbon impact in the case of an existing building) more efficient for equipping so-called inaccessible roof terraces with a photovoltaic installation.

[0008] It will make it possible to equip industrial roofs with photovoltaic panels, roofs of the inaccessible flat roof type, without having to replace all or part of the existing waterproofing system.

Claims

Demands

1. Device intended to receive a photovoltaic panel integration system (3) on a so-called inaccessible roof terrace, characterized in that said device is a lightweight galvanized metal structure (4,5), that said structure is supported by the main structure of the building (2) and maintained above the waterproofing complex (1).

2. Device according to claim 1, characterized in that the lightweight metal structure (4,5) is sufficiently high (80cm minimum between top of sealing and bottom of photovoltaic panels) to allow wide ventilation of the rear face of the photovoltaic panels (3).

3. Device according to claim 2, characterized in that it can allow, between the sealing complex and the underside of the panels, the diffusion of light reflected by the sealing complex (1) onto the underside of the photovoltaic panels (3)

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