Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (4th Edition)

Published by Pearson
ISBN 10: 0133942651
ISBN 13: 978-0-13394-265-1

Chapter 21 - Heat Engines and Refrigerators - Exercises and Problems - Page 596: 34

Answer

$K=2$

Work Step by Step

The relation between thermal efficiency$(\eta)$ and coefficient of performance$(K)$ is given as $K = \frac{1}{\eta} -1$ $ \therefore K = \frac{1}{1/3} -1$ $ K = 3-1$ $K=2$
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