"jeannette" wrote in message
...
On Wed, 17 Aug 2005 20:01:57 -0400, Jeff wrote:

It may be true that water cooled is usually more efficient, but for a
minimal system based on a BD35, the added efficiency may not be worth
the power use of a water pump. This is a small issue with a large
holding plate system because it only runs one or two hours a day, but
the small evaporator based system may run 8 hours a day, and the water
pump would then add a lot of overhead. And, it adds a through-hull,
strainer and plumbing, and can get clogged with silt. This may be
worthwhile Downeast, where the water is 52 degrees, but might not be
in the tropics.


The solution is: "Isotherm SP" for self pumping cooling with no moving
parts. I have one for 2 years now and it never missed a bit.

http://www.e-marine-inc.com/products...ation/faq.html

Jeannette
Bristol 32, San Carlos, Mexico
http://www.eblw.com/contepartiro/contepartiro.html

Looks like a system much like the Frikkin-Boat except the heat enchanger
in in the sink drain. OK for a small systems.

Doug
s/v Callista