Coating that is both reflective and thermally conductive

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For an electrical enclosure exposed to direct sunlight and requiring passive cooling, finding a suitable finish for aluminum (380A) that reflects solar radiation while allowing thermal energy to escape is crucial. Options like IR reflective coatings, such as ZEFFLE by Daikin, are available, but durability is a concern. A more practical solution suggested involves using aluminum sheets on stand-offs to provide shade, which can be more cost-effective and durable than advanced coatings. This method also offers additional benefits like weatherproofing for air vents, enhancing the enclosure's overall performance.
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I have an electrical enclosure that sits in direct sunlight and must use passive cooling. Does anyone know of or have ideas on where to find information about a finish for aluminum (380A) that is both reflective of sun radiation while allowing thermal energy generated within the enclosure to efficiently pass through for convective cooling?
 
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Googling "IR reflective coating" nets quite a few results. ZEFFLE made by Daikin is one. Just find one with a low heat transfer coefficient.

Though, I would find a more durable solution - maybe have a sheet/s of Al on stand-offs to shade the enclosure. probably cheaper and definitely more effective and hard wearing than a high tech paint. They could also double as weather proofing for air vents.
 

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