Lesson: Heat Pumps and RefrigeratorsPhysics
In this lesson, we will learn how to calculate the mechanical work required by heat pumps to transfer heat from low to high temperature reservoirs.
Sample Question Videos
A refrigerator has a coefficient of performance of 3.0 and it requires an input of J of work per cycle.
How much heat per cycle is removed from the cold reservoir?
How much heat per cycle is discarded to the hot reservoir?
A refrigerator discards 80.0 J of heat per cycle and its coefficient of performance is 6.0.
How much heat does the refrigerator remove from its cold reservoir per cycle?
How much work must the refrigerator do per cycle?
Calculate the maximum coefficient of performance for a vapor absorption refrigeration system operating with a generator temperature of , an absorber temperature of , and a condenser temperature of . Answer to three-significant-figure precision.