8th Edition

ISBN: 9780073398174

Author: Yunus A. Cengel Dr., Michael A. Boles

Publisher: McGraw-Hill Education

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Thermodynamics is a field of research, which needs the creation of absolute and ideal states and logical and practical examination of the actual conditions. By considering all the laws and theories of thermodynamics, the chemical reactions, the occurrenc…

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Textbook Question

Chapter 8.8, Problem 138FEP

A heat engine receives heat from a source at 1500 K at a rate of 600 kJ/s and rejects the waste heat to a sink at 300 K. If the power output of the engine is 400 kW, the second-law efficiency of this heat engine is

(a) 42%
(b) 53%
(c) 83%
(d) 67%
(e) 80%

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Chapter 8.8, Problem 137FEP

Chapter 8.8, Problem 139FEP

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Chapter 8 Solutions

Thermodynamics: An Engineering Approach

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A heat engine receives heat from a source at 1500 K at a rate of 600 kJ/s and rejects the waste heat to a sink at 300 K. If the power output of the engine is 400 kW, the second-law efficiency of this heat engine is (a) 42% (b) 53% (c) 83% (d) 67% (e) 80%

Solution Summary: The author explains the second law efficiency of the heat engine.

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