Coefficient of Performance (Refrigerator)

C O P_{R} = \frac{Q _{C}}{W} = \frac{T _{C}}{T _{H} - T _{C}}

Performance metric for refrigerators.

Variables

COP_R

COP (refrigerator)

Cooling per work

unitless

Q_C

Heat removed

Heat from cold reservoir

J

W

Work input

Work required

J

T_C

Cold temperature

Cold reservoir temp

K

T_H

Hot temperature

Hot reservoir temp

K

Derivation

COP = Q_C/W. For Carnot: COP = T_C/(T_H - T_C).

Your notes

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