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Refrigerator

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Maharashtra State Board: Class 11

Definition: Refrigerator

A device that extracts heat from a cold region and delivers it to the surroundings, further cooling the cold region (where QC > 0, QH < 0, W < 0) is called a refrigerator.

OR

A system that requires external work to transfer heat from a lower temperature to a higher temperature, with its performance measured by the Coefficient of Performance (COP), is called refrigeration.

Maharashtra State Board: Class 11

Formula: Refrigeration

COP = \[\frac {\text {Heat removed from cold reservoir​}}{\text {Work input}}\]

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