Answer
A
Work Step by Step
$T_H=T_{sat,1\ MPa}=179.88°C$
$T_L=T_{sat,0.4\ MPa}=143.61°C$
$\eta=1-\frac{T_L}{T_H}$
$\eta=0.08=8.0\%$
Thermodynamics: An Engineering Approach 8th Edition
by Cengel, Yunus; Boles, Michael
Published by
McGraw-Hill Education
ISBN 10:
0-07339-817-9
ISBN 13:
978-0-07339-817-4
Chapter 6 - The Second Law of Thermodynamics - Problems - Page 326: 6-160
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