refrigerator cop

Question

Coefficient of performance of refrigerator is defined as:

RankGuru · Accepted Answer

A refrigerator is a 'reverse' heat engine that uses work input ($W$) to move heat from a cold reservoir ($Q_c$) to a hot reservoir ($Q_h$).
- Instead of efficiency, we use the **Coefficient of Performance (COP)**.
- For a refrigerator, the desired effect is cooling ($Q_c$):
$COP_{ref} = \frac{	ext{Desired cooling}}{	ext{Work input}} = \frac{Q_c}{W}$.
For a heat pump, where heating ($Q_h$) is the goal, $COP_{hp} = Q_h/W$.

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refrigerator cop

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