On Fri, 24 Aug 2007 17:33:25 +0000, Larry wrote:

It's quite simple, actually. On a boat system, I'd look for a pipe-in-a-
pipe condensor of stainless, not copper

You are aware that the relative thermal conductivity of copper is 225.
Silver is 250. Stainless is 6 to 8, and aluminum is 175. You can use
stainless. Lots and lots of it.

Casady