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post #1 of 4 Old 11-18-2003 Thread Starter
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Cabin Cooling Radiators

Some time ago, a friend told me he was going to install a radiator on his boat to cool the salon. I think it was a prefabricated unit designed for boats. It would bring the temperature of the boat down to that of the ambient sea water.

It was comprised of a radiator that had sea water pumped through it by an electric pump, a fan that blew cabin air across the radiator and an evaporator to get rid of condensation from the radiator.

Though he didn''t give me numbers, it seemed as though the current required was so small that it would run all day on a normal bank without having to start the engine or generator. And when left on, it would eventually cool the boat down.

Has anyone heard of this system? And, if so, how well did it work?

Chas
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post #2 of 4 Old 11-18-2003
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Cabin Cooling Radiators

Sounds like the "Cool Currents" Unit that someone marketed. Not sure its that efficient but Practical Sailor did a quick review and said it was "alright" and better than nothing, but don''t expect anything special.

http://www.practical-sailor.com/pub/28_1/chandlery/4628-1.html
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post #3 of 4 Old 11-21-2003
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Cabin Cooling Radiators

I would think that if your in aplace like florida and the water temp is +80 then it would not be less then the water temp or that it would take a very long time to cool down to the water temp maybe if you atach a scope to the inlet that could go 20 or so feet below wher the water might be cooler maybe that might help. well just a thought
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post #4 of 4 Old 11-21-2003 Thread Starter
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Cabin Cooling Radiators

I don''t know how well they work. Certainly the boat would need to be insulated and these units probably wouldn''t work as well an any A/C unit. But, since I don''t plan on using marinas and shore power, the whole advantage to me is its low energy draw.

You''re right, Noreaster. I know from snokeling that tropical waters can be quite cool as close as 5''-6'' from the surface. A long intake hose wouldn''t have to go down much further than the keel to bring up the cool water but might require a slightly more powerful pump to suck water through the hose''s length.

Chas
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