04-01-2013, 06:43 PM
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CC Member
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Join Date: Apr 2011
Posts: 1,092
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olddog -
Black absorbs heat. Shiny, reflective surfaces reject heat. Therefore a silver coating on the inside of the pipes would be better than black, from a performance perspective.
We all know that applies if the heat you are absorbing or reflecting is from a radiant glowing object (light source), not so sure you can apply that same logic to hot spent gases pumped into a pipe. The ceramic coating with the best insulation properties is best, and I think color has no bearing on it - it's just dye in the ceramic mix. I'm no expert that's for sure, just my opinion.
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