4.3 Refrigerators and Heat Pumps
Running a cycle backward to push heat from cold to hot, and coefficients of performance that separate a cooling device from a heating one.
University Physics Volume 2, 4.3 Refrigerators and Heat Pumps
3 exercises
4.3 Exercise 1
If the refrigerator door is left open, what happens to the temperature of the kitchen?
4.3 Exercise 3
A refrigerator has a coefficient of performance of 3.0. (a) If it requires 200 J of work per cycle, how much heat per cycle does it remove the cold reservoir? (b) How much heat per cycle is discarded to the hot reservoir?
4.3 Exercise 5
If a refrigerator discards 80 J of heat per cycle and its coefficient of performance is 6.0, what are (a) the quantity off heat it removes per cycle from a cold reservoir and (b) the amount of work per cycle required for its operation?
Adapted from University Physics Volume 2 © 2016 Rice University. Licensed under CC BY 4.0. Source: University Physics Volume 2. Imported at revision db44eb9.