Lesson: Heat Pumps and Refrigerators
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
Worksheet: 23 Questions • 2 Videos
A Carnot heat pump in a house operates between temperatures of and . By how much does the pump heat the house for every 1.0 J of work that it performs?
Find the minimum work that a refrigerator must be supplied with if it is to cool a freezer’s interior by 40 J per cycle. The freezer’s interior temperature is and its exterior temperature is .
A Carnot engine operates between heat reservoirs at temperatures of 550 K and 350 K. The high-temperature reservoir is heated by J per cycle. How much work per cycle does the engine perform?