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But what im saying is, why isnt there a way to capture heat and turn it into power (yes, yes, sterling engine, but you need a difference of temperature to make it run) but using solid state tech. i.e. plate that absorbs heat and use to power other things.
Or is there, but we haven't found it yet?
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There is
Use a Peltier effect plate backwards and you get a current -- this is called a thermocouple
But remember, entropy will win and defeat us all! Entropy, if you didn't know, is (in a very basic sense) a quantity of heat that can never EVER be used for useful work or recaptured. Every time you do work, entropy is created. Bugger
Entropy is the reason why 100% efficiency is not possible (unless you assume reversible conditions - which are not possible in the real world)
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