Answer
B
Work Step by Step
$T_H=T{sat,\ 7\ MPa}=285.83°C$
$T_L=T{sat,\ 2\ MPa}=212.38°C$
$\eta=1-\frac{T_L}{T_H}$
$\eta=0.131$
$\eta = \dot{W}_e/\dot{Q}_H,\ \dot{Q}_H=150\ kJ/s$
$\dot{W}_e=19.71\ kJ/s$
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 327: 6-165
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