Answer
$\dot{m}=52.62\ lbm/h$
Work Step by Step
Since $\eta = \dot{W}_e/\dot{Q}_H$,
Given $\eta = 0.28,\ \dot{W}_e=110\ hp=279950\ Btu/h$:
$\dot{Q}_H=999821.4\ Btu/h$
Given $q=19000Btu/lbm$ and $\dot{Q}_H=q\dot{m}$:
$\dot{m}=52.62\ lbm/h$
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 313: 6-16E
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