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Old 08-13-16, 11:17 AM   #9
jeff5may
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Quote:
Originally Posted by JimiQ View Post
Wouldn't it be possible to use waste heat from fridge with seebeck TEG to run fan on compressor to cool it?

I'll try to do something like that, but right now we have small baby and it takes a lot of my time
One problem with that idea: delta T.

To get much power flow out of a seebeck pile, there has to be a massive temperature differential OR a mmmassssive amount of surface area in the pile. With a sterno flame, the delta T is enough for some types of generators. Solar can barely get there with high-density (concentrator or evacuated-tube type) collectors. A vapor compression system would be operating at low COP to generate useful power. Even with a mmmmassssive TEG pile, you would trade COP for generated power.

Good idea, bad application. Slap the thing on a buck stove like a stirling motor-heat powered fan.

Best you can do with a fridge is wrap a worm around the compressor shell and plumb that worm into your kitchen faucet. No moving parts, nearly instant hot water, no need to hack the fridge. Larger worm = less cold-water sandwich between depletion of worm and arrival of heated water. It ain't gonna boil or scald you.
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