Your Carnot refrigerator has a coefficient of performance of 5.4.Assume that 15.0 J of heat are removed from the cold refrigerator compartment in each engine cycle.What is the heat expelled into the kitchen for each cycle?

Question

Quizplus · Accepted Answer

The coefficient of performance (COP) for a refrigerator is defined as the ratio of the heat removed from the cold reservoir (Q_c) to the work input (W), COP = Q_c / W. Given that the COP is 5.4 and Q_c is 15.0 J, we can find the work input as W = Q_c / COP = 15.0 J / 5.4 = 2.8 J. The heat expelled into the kitchen (Q_h) is the sum of the heat removed from the cold compartment and the work input, Q_h = Q_c + W = 15.0 J + 2.8 J = 17.8 J.

Your Carnot Refrigerator Has a Coefficient of Performance of 5