Solar Panel Coating for Electrical Neutralization
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Solution Overview
Problem
Solar panels pose safety risks during fires and maintenance due to continued electrical activity, as they are assumed to be energized even when the building's utilities are shut down, and existing methods to neutralize them are inefficient or unsafe for firefighters and emergency workers.
Innovation Solution
A curable coating composition is applied to solar panels using a delivery system that reduces light transmission to the photovoltaic cells, effectively neutralizing the electrical output by using a water-soluble polymeric binder and opacifiers, allowing for safe operation from a distance and preventing reactivation until needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If firefighters use salvage covers to block sunlight from solar panels, then the electrical output is reduced, but the covers can be blown off by high winds or water jets and do not completely block sunlight
Solution Approach 1:
The coating composition contains opacifiers that change the optical properties of the solar panel surface by forming an opaque layer that blocks sunlight transmission, effectively reducing electrical output regardless of wind or water conditions
Solution Approach 2:
The coating composition is a composite material containing water-soluble polymeric binder, opacifiers, and optional additives that work together to create a removable, opaque coating that reliably blocks light while being applicable from ground level
2Reliability
If firefighters climb onto the roof to install salvage covers, then they can directly block sunlight, but they expose themselves to electrical shock risks and physical dangers
Solution Approach 1:
The coating composition acts as an intermediary substance that can be applied from ground level using a delivery system, eliminating the need for firefighters to physically contact the solar panels while still achieving electrical neutralization
Solution Approach 2:
The manual mechanical approach of climbing and installing covers is replaced with a chemical/coating-based system that can be delivered remotely, substituting physical intervention with a material-based solution
3Ease of operation
If standard fire fighting foam is used to cover solar panels, then it can be applied easily, but it does not completely block sunlight and the foam slides off the panels
Solution Approach 1:
The coating composition modifies key parameters including viscosity for proper flow and adhesion, opacity to completely block sunlight, and water solubility to enable easy removal, creating a formulation that stays on the panel while remaining removable
Solution Approach 2:
The opacifiers in the coating composition fundamentally change the optical properties of the panel surface, creating an opaque barrier that completely blocks sunlight transmission unlike transparent or translucent foam
4Reliability
If a thick opaque coating is applied to completely block sunlight, then electrical output is reduced to zero, but the coating may be difficult to remove and could damage the panel
Solution Approach 1:
The water solubility parameter of the coating is specifically selected to enable easy removal by water rinsing, while the opacity parameter is optimized to completely block sunlight during the neutralization period, achieving both safety and reusability
Solution Approach 2:
The coating is designed as a temporary, disposable protective layer that serves its purpose of electrical neutralization and then can be easily removed and disposed of, with no permanent impact on the solar panel
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
The solution rapidly and efficiently neutralizes solar panels, reducing the risk of electrocution and allowing for safe maintenance, while being removable and non-destructive, ensuring the panels can be reused or recycled.
Implementation Method 1
coating the light-receiving area of said solar panel with a sufficient thickness of a curable coating composition comprising a curable water-soluble polymeric binder and a sufficient quantity of an opacifier such that said coating composition reduces light transmission therethrough
Data Source
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AI summary
The present invention relates to a method for coating a solar panel to reduce the amount of light being received by solar panel's photovoltaic cells and reduce their electrical output. The method comprises the step of coating the light-receiving area of said solar panel with a sufficient thickness of a coating composition which is adapted to reduce the amount of light reaching the photovoltaic cells such that the resulting electrical output of said solar panel is reduced to below a level which causes physiological injury. The invention also relates to a composition for coating the light-receiving area of a solar panel comprising: a binder and an opacifier, wherein the opacifier is included in a sufficient quantity such that a predetermined film thickness of said composition reduces light transmission therethrough such that the resulting electrical output of said solar panel is reduced to below the predetermined level. The invention further relates to the use of a coating composition, apparatus for delivering a coating composition and a system for delivering the coating composition onto the light-receiving area of a solar panel. Finally, the invention relates to a method of electrically neutralising a solar panel, by sequentially coating a solar panel and measuring its electrical output until the electrical output is below injury level.