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more efficient coolers reliant on the first law?


fifaman

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hi again

 

i am very interested in energy

is it possible to get significant quantities of heat from thin air

by compressing and cooling?

so u can have the 2 types of heat engines together

 

u can like have a piston to compress air sufficiently to boil a volatile liquid

just like an air conditioner

then the volatile liquid can have a high temperature in relation to the environment and we can extract more heat for electricity to partially power the appliance

 

and if possible ( which i have doubts about)

provide minimal surpluses?

 

thanks

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It depends what you mean by "significant". Think about a bicycle pump and how it gets warm while pumping a tire. An electric air pump can give temperatures high enough to give you a nasty burn if you touch the outlet of the pump. I think it is possible you could recover some of the energy for use but it would be such a small amount of whatever you were using to produce it to begin with that it probably isn't worth having the added equipment necessary for it. I would have to do more math than I am willing to slog through to figure out an exact number but am guessing that you could only recover a couple of magnitudes of order less than 1% of the original energy expended.

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