Hey, Rusty

    Here is what you need for a radiator - really very interesting stuff.
Apparently the claim is that these graphite core heat exchangers can reject
almost 3.5  times  more heat as the standard metal one of the same size.

 http://www.eere.energy.gov/hydrogenandfuelcells/pdfs/nn0123v.pdf

Would be interesting to see where they go with it.

Ed Anderson

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