Thermodynamics: An Engineering Approach
9th Edition
ISBN: 9781259822674
Author: Yunus A. Cengel Dr., Michael A. Boles
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 4.5, Problem 162FEP
A piston–cylinder device contains an ideal gas. The gas undergoes two successive cooling processes by rejecting heat to the surroundings. First the gas is cooled at constant pressure until
1. The ratio of the final volume to the initial volume of the gas is
- (a) 0.25
- (b) 0.50
- (c) 0.67
- (d) 0.75
- (e) 1.0
2. The work done on the gas by the piston is
- (a) RT1/4
- (b) cvT1/2
- (c) cpT1/2
- (d) (cv + cp)T1/4
- (e) cv(T1 + T2)/2
3. The total heat transferred from the gas is
- (a) RT1/4
- (b) cvT1/2
- (c) cpT1/2
- (d) (cv + cp)T1/4
- (e) cv(T1 + T3)/2
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Chapter 4 Solutions
Thermodynamics: An Engineering Approach
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