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Old 02-28-2014, 11:34 PM   #29
BruceK
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City: Sydney
Vessel Name: Sojourn
Vessel Model: Integrity 386
Join Date: Oct 2011
Posts: 13,329
Quote:
Originally Posted by Ski in NC View Post
Electric water heat from a gennie is not efficient. A good diesel is about 40% efficient at converting fuel energy into electrical energy. A little boat gennie is probably around 25%. So only 25% of the energy in the diesel makes it into heat in the tank...
If you already run the genset to recharge batteries, or the eutectic fridge/freezer, or to cook, as many do, it can heat water at no or little extra fuel use or genset hours.
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BruceK
2005 Integrity 386 "Sojourn"
Sydney Australia
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