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R value of low e surfaces.

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Posted by Jeff on January 4, 2007, 6:17 pm
 
   I'm working on my solar air collector. It has a duct and a manifold
that will made of aluminized polyisocyanurate.

   My initial thought was to have the low e surface facing inward, ie
inside the duct and the manifold.

   Now I wonder if the air flow and subsequent convective loss will
negate that. I'm thinking air flows will be between 2 and 8 mph for the
duct and manifold (350 CFM).

   Any thoughts on this?

   Jeff

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