Next message: (no name): "TWL: Zinc on wood boats"
Using an electric hot water heater via a circ. pump to heat an engine is
certainly possible, but the heat transfer will be pretty slow depending on
the size of the block, and it may be pretty demanding for a little heating
element. The ammount of heat that you will be able to put out will depend
on the ammount of heating coil inside your water heater. Usually these
coils are pretty small. I think you may be dissappointed with the results.
Depending on the radiant heat lost by the block, it may not be able to heat
the engine effectively at all given any ammount of time. A Webasto or
similar heater is going to give you a lot more usable heat, as well as heat
when at anchor.
I have installed on my 40 ft Pacific Troller a 45000btu Hurricaine boiler,
and a Seaward 10gal hot water tank. Engine heating is via a small heat
exchanger (I chose to have heating water seperated from engine cooling in
this way, because I didn't like the idea of being vulnerable to losing my
cooling system at all the joints, hoses, and heater cores strewn around the
boat. I only have one engine). With my tiny heat exchanger it takes 2 or 3
hours to warm engine from cold to about 130 deg. If you install your heater
in the engine's water system, that time would be reduced radically. That is
after all exactly what Webasto's were designed for on commercial trucks.
Since you have two engines , you can heat the other via a heat exchanger so
that one engine still has cooling if you pop a heater core or something.
Good luck.
Dave Donnelly
Troller Shirley
Powell River BC
_________________________________________________________________
The new MSN 8: advanced junk mail protection and 2 months FREE*
http://join.msn.com/?page=dept/bcomm&pgmarket=en-ca&RU=http%3a%2f%2fjoin.msn.com%2f%3fpage%3dmisc%2fspecialoffers%26pgmarket%3den-ca
_______________________________________________
http://lists.samurai.com/mailman/listinfo/trawler-world-list
To Unsubscribe send email to
Include the word "Unsubscribe" (and nothing else) in the subject or body of the message.
