Metal Shingle Solar Mounting With Indexed Placement and Thermal Expansion
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Solution Overview
Problem
Existing systems face challenges in quickly and easily determining the optimal positioning of solar module mounts on metal shingled roofs, accommodating thermal expansion, grounding both metal shingles and solar module frames, preventing water intrusion, and achieving aesthetically pleasing solar arrays due to surface irregularities.
Innovation Solution
The system involves dimensioning and marking metal roofing shingles to guide the placement of solar mounting assemblies, providing grounding and thermal expansion accommodation, using corrugated shingles for capillary breaks, and employing overlapping module frames for aesthetic alignment, with retention clips for secure installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional mounting approaches are used for solar modules on metal shingled roofs, then installation can be completed, but it is difficult to quickly and easily determine optimal positioning for solar module mounts
Solution Approach 1:
Index marks are pre-formed on the metal roofing shingles during manufacturing to indicate optimal mounting positions. These marks are visible before installation and guide workers to quickly determine where to place mounting assemblies without requiring complex measurements or calculations on the roof.
Solution Approach 2:
The pattern of index marks on each shingle serves as a template that repeats across the entire roof. Once workers understand the positioning system from one shingle, they can quickly replicate the same mounting pattern across all shingles, dramatically speeding up installation while ensuring consistent optimal positioning.
2Strength
If solar modules are rigidly mounted to metal shingles, then secure attachment is achieved, but thermal expansion and contraction of modules cannot be accommodated
Solution Approach 1:
The mounting assembly incorporates a cleat with a slot that allows the solar module to move slightly in response to thermal expansion and contraction. The retention clip secures the module while permitting controlled movement through the slot, accommodating temperature-induced dimensional changes without compromising attachment security.
3Reliability
If metal shingles are installed with traditional overlapping methods, then coverage is achieved, but water intrusion can occur between shingles
Solution Approach 1:
Capillary breaks are formed within the overlapping regions of adjacent shingles. These breaks utilize capillary action principles to prevent water from being drawn upward through the overlap by surface tension, converting a potential weakness in the overlap into an active water-blocking feature that enhances waterproofing.
4Shape
If solar modules are installed to cover roof surface irregularities, then aesthetic appearance is improved, but installation time increases
Solution Approach 1:
The mounting system is designed to be installed quickly using standardized procedures guided by the pre-formed index marks. The system accepts roof surface irregularities rather than requiring precise leveling, allowing modules to be rapidly positioned and secured without time-consuming adjustments, while still achieving an aesthetically pleasing appearance.
5Strength
If multiple tools are used to install solar module frames, then secure attachment is achieved, but installation speed decreases
Solution Approach 1:
The mounting assembly integrates multiple functions into a single unit: the base attaches to the roof, the cleat provides the mounting interface, and the retention clip secures the module while providing grounding. This consolidation allows workers to install secure attachments using fewer tool changes and simpler procedures, improving installation speed without compromising security.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enables rapid and easy assembly of solar panels on metal shingled roofs, accommodating thermal expansion, preventing water intrusion, and providing an aesthetically pleasing appearance by hiding roof irregularities, while ensuring quick installation and ergonomic working conditions.
Implementation Method 1
the metal shingles can be made with capillary breaks therein (either by forming lines into the shingles or by corrugating the shingles) thus substantially reducing the problem of water intrusion
Implementation Method 2
each of the solar module frames can freely thermally expand and contract without any of the solar module frames pushing or pulling on one another
Data Source
AI summary
A solar power system for a metal shingled roof, including: a plurality of metal roofing shingles; and a plurality of solar module mounting assemblies, wherein each of the solar module mounting assemblies has upper and lower module cleats that support upper and lower solar module frames thereon such that the upper and lower module frames are both spaced apart in a direction parallel to the roof, and spaced apart in a direction perpendicular to the roof.