Carnot Cycle: ConcepTest and Example Problem

Try to answer this ConcepTest and solve this example problem before using this module. Studies show that trying to answer the questions before studying material improves learning and retention. By the end of this module, you should be able to answer these on your own. Answers will be given later in this module.

An example problem on the Carnot Cycle.
Example Problem 1

A heat pump is used to transfer heat from a reservoir (TC = 250 K) to a higher-temperature reservoir (TH = 300 K). The work done on the pump is 500 J. 
   1. What is the entropy change for the cycle? 
   2. Calculate values of QH and QC
   3. Determine the coefficient of performance.