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Old 28-02-2009, 19:13   #1
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Adding electric compressor to engine-driven fridge?

I have an engine-driven refrigerator/freezer, with a cold plate in the fridge and a cold plate in the freezer. We are going to be on the hook a lot this summer and I don't want to run the engine to keep the food cold.

Can I connect an electric compressor into the system and run it off my solar and wind generator? Has anyone done this?

It would be a shame to put in a whole new condensor side when there's such a great system in place already.
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Old 01-03-2009, 01:53   #2
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bene505, The problem with two compressors in parallel (even when only one compressor is running at a time) is with the oil management. Normally one of the compressors ends up with all of the oil, and the other might burn up.
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Old 01-03-2009, 02:53   #3
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I have seen big DC motor coupled to compressor, forget the engine. You need to calculate what power the compressor require, if you can source a motor and calculate if you have the DC power to supply that motor.
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Old 01-03-2009, 04:55   #4
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Take a good look at your cold plate--many of them have two sets of refrigerant coils, one for an engine driven compressor and one for a DC system.
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Old 01-03-2009, 20:23   #5
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An engine driven compressor can draw as much as 7 horsepower. It would take a pretty big DC motor to drive it.
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