At 07:39 AM 12/30/2004, Russell McMahon wrote:

>Thermoelectric generator using Peltier effect device
>
>        http://www.robotics.com/robomenu/generator.html
>
>5 watts output from a candle or spirit burner.
>I suspect the efficiency is very very low BUT that's a serious amount of 
>output power, and there may be applications where this is useful. I 
>imagine that cooling the cold side well would be the major challenge.

And keeping the device from frying. They don't like much heat.

Ovonics made devices like this years ago for campers, but they were bulky 
(about 0.5 cu ft) and heavy.  Still, 12V at 300mA off a large candle isn't bad.

They used a fan, powered from the output, to cool the cold side.

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