College Physics with MasteringPhysics 7th Edition by Jerry Wilson,Anthony Buffa,Bo Lou

Exercise 35

There is a Carnot coefficient of performance (COP C ) for an ideal, or Carnot, refrigerator. (a) Show that this quantity is given by

(b) What does this tell you about adjusting the temperatures for the maximum COP of a refrigerator (Can you guess the equation for the COP C for a heat pump )