Solar Reflector Plate Composite Protective Layer
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Solution Overview
Problem
Solar reflector plates used in solar power generation face issues with sand resistance and weather resistance, particularly in dusty environments, due to inadequate protective layers.
Innovation Solution
A solar reflector plate design featuring a substrate with a metal reflective layer, a silicone-based protective layer containing 15% to 50% silicon by mass, and an interlayer with silane or titanium coupling agents, which maintains high reflectance and enhances sand and weather resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a thin metal film is deposited onto the surface of a glass substrate to achieve high reflectance, then the reflectance is improved, but the sand resistance and weather resistance deteriorate
Solution Approach 1:
The patent applies composite materials by creating a multi-layer structure consisting of a glass substrate, a metal reflective film layer, and a transparent inorganic protective film layer. This composite structure combines the high reflectance property of the metal film with the protective properties of the inorganic coating, resolving the contradiction between achieving high reflectance and maintaining sand/weather resistance.
Solution Approach 2:
The patent applies local quality by providing different functional layers at different locations/levels of the reflector plate structure. The metal film provides high reflectance at the optical interface, while the inorganic protective film provides enhanced sand and weather resistance at the outer surface, allowing each layer to optimize its specific function without compromising the other.
2Reliability
If a resin coat is applied as the uppermost surface layer to protect the reflective layer, then the weather resistance is improved, but the sand resistance deteriorates
Solution Approach 1:
The patent applies parameter changes by transitioning from an organic resin coating to an inorganic protective film with different material properties. The inorganic film provides both weather resistance and sand resistance by changing the material parameter from organic polymer to inorganic compound, eliminating the trade-off between weather resistance and sand resistance.
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 provides excellent reflectance while significantly improving sand and weather resistance, ensuring the plate's durability in harsh outdoor conditions.
Implementation Method 1
a siloxane bond has been generated by crosslinking or curing of a silane compound containing an alkoxysilyl group or a silanol group
Implementation Method 2
a siloxane bond has been generated by crosslinking or curing of a silane compound containing an alkoxysilyl group or a silanol group
Implementation Method 3
a reflective layer provided onto the substrate, wherein the reflective layer is a reflective layer containing a metal
Data Source
Figure 1A~1C
AI summary
The purpose of the present invention is to provide a solar reflector plate maintaining an excellent reflectance of a reflective layer and having excellent sand resistance and weather resistance. The solar reflector plate according to the present invention comprises a substrate; a reflective layer provided onto the substrate; and a protective layer provided onto the reflective layer, wherein the protective layer contains silicon and an organic substance, contains silicon in an amount of 10% by mass to 60% by mass in terms of SiO2, and has 1.5 to 3.2 oxygen atoms on average that form a chemical bond with silicon.