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Old 21-01-2013, 14:28   #16
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Join Date: Dec 2011
Location: Key West FL - Burlington VT
Boat: O'day 32 CC Ketch
Posts: 493
Re: What's running?

Its a heat exchanger, instead of a fan on the condenser. The volume has nothing to do with it. Its not like the water that drips from a A/C unit, its not the tiny amount that drips under your car when the A/C is cranking. Its cooling water for the gas circulating through the system. (R12, R134a, R22, R502) compressor, condenser, receiver/drier,heat exchanger, evaporater. All reefer follows this system.
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Old 22-01-2013, 05:55   #17
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Join Date: Aug 2012
Location: Maryland, USA
Boat: 42' Sportfish
Posts: 2,980
Re: What's running?

Yep, it's AC/reverse cycle heat. A circulation pump draws raw water in via a (usually dedicated) thru-hull, and that's also disharged at the rate described. Depending on thermostat settings and outside temps, the system could run either continuously or periodically. Usually said to become very ineffecient for the heat side once surround water temps get below about 46 but I don't know that for sure (would have assumed at least some heat would stil be available if raw water temps are lower than ambient air temps).

Some boats take on a lot of bilge water, but usually a bilge pump output -- which could look ike a similar flow volume -- will only run for a short time, i.e, until the float switch returns to rest position. Usually wouldn't be genset running in a marina. AC condensate, dehumidier, and even shower sump output is puny, compared to AC/heat raw water flow.

-Chris
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