Question

A Peltier cooler is a heat pump that can be set to either cool or heat its contents. One such cooler uses 100 W of input power whether heating or cooling. Which is greater, its coefficient of performance for cooling or its coefficient of performance for heating? netyplugintie pho/1817827m COP oing cWn COP,eating = QH / W Heat pump W. A. Cooling B. Heating in 100 J/s C. The two coefficients are the same.
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Answer #1

B) Heating

because, COP_cooling = Qc/W_in

COP_heating = Qh/W_in

and Qh > Qc

W_in is same for both cases.

so, clearly, COP_heating > COP_cooling

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