Is the coefficient of performance of a refrigerator constant?
(N/A) No,the coefficient of performance $(COP)$ of a refrigerator is not constant. The $COP$ is defined as $\beta = \frac{T_2}{T_1 - T_2}$,where $T_2$ is the temperature inside the refrigerator and $T_1$ is the temperature of the surroundings. As the inside temperature $(T_2)$ decreases,the value of the $COP$ also decreases.
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