Corrugated Roof PV Spacer Assembly for Venting and Leak Control
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Solution Overview
Problem
Installing photovoltaic panels on sloping corrugated sheet metal roofs is challenging due to poor ventilation, increased risk of water leakage, and heat accumulation, which degrades panel performance and compromises roof integrity, as existing spacer elements provide weak ventilation and require additional holes in the roof, increasing leakage risks.
Innovation Solution
A U-shaped spacer element with an oblong bore and adjustable L-shape bracket system that fits over corrugated sheet ribs, providing improved ventilation, adjustable displacement, and a flexible waterproof membrane to prevent water ingress, while allowing for better heat dissipation and structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If existing spacer elements are used to mount PV panels on corrugated sheet metal roofs, then the panels can be installed, but ventilation is poor and heat accumulation occurs which degrades panel performance
Solution Approach 1:
The spacer element introduces a vertical dimension (height) between the PV panel and the roof surface, creating an air gap that enables ventilation. The adjustable height mechanism allows optimization of this dimensional space to improve heat dissipation while maintaining secure mounting.
Solution Approach 2:
The spacer element acts as an intermediary component between the PV panel and the roof structure. It provides both mechanical support and thermal management functions by creating a ventilated air gap, thus mediating between the conflicting requirements of secure mounting and heat dissipation.
2Strength
If additional holes are drilled in the roof for mounting, then secure attachment is achieved, but water leakage risk increases
Solution Approach 1:
The spacer element serves as an intermediary mounting system that distributes fastening points across multiple ribs rather than concentrating them in one location. This intermediate structure provides secure attachment while the waterproof membrane seals around it to prevent water ingress.
Solution Approach 2:
A flexible waterproof membrane is used to seal around the spacer element and fastening points. This thin film creates a waterproof barrier that prevents water leakage while allowing the rigid spacer structure to provide secure mechanical attachment.
3Ease of manufacture
If the spacer element is fixed in position, then installation is simplified, but adaptability to different rib configurations is reduced
Solution Approach 1:
The spacer element incorporates adjustable mechanisms that allow it to adapt to different rib configurations. The height and horizontal position can be modified during installation, transforming a static component into a dynamic one that responds to varying roof structures.
Solution Approach 2:
The spacer element is divided into adjustable segments or components that can be configured independently. This segmentation allows each part to be positioned and sized according to the specific rib spacing and configuration, enhancing adaptability while maintaining ease of assembly.
Data Source
AI summary
A U-shaped spacer element supporting and retaining a photovoltaic panel assembly spacedly over a rooftop corrugated sheet; one shorter side leg thereof having an oblong bore, the other side leg having an intermediate ridge section. A screw engages into the ridge web and axially clears the shorter leg, anchoring the main body to the supporting rooftop frame elements through the corrugated sheet. The ridge section conformingly abuts against a longitudinal rib of the corrugated sheet. An L-shape bracket inner leg abuts against the main body short leg, the bracket outer leg abutting sideways against a registering portion of the photovoltaic panel assembly. A second oblong bore is made into the outer leg and extends parallel to the plane of the main body base leg. Two bolts engage the oblong bores and adjustably interlock the L-shape bracket to the spacer element main body and to the photovoltaic assembly.