Thermodynamics: An Engineering Approach 8th Edition

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 315: 6-48

Answer

$\dot{Q}_L=132\ kJ/min$ $COP=1.57$

Work Step by Step

$\dot{Q}_L=\dot{m}c_p(T_1-T_2)$ Given $\dot{m}=215\ kg/h,\ c_p=3.35\ kJ/kg.°C,\ T_1=24°C,\ T_2=13°C$: $\dot{Q}_L=132\ kJ/min$ $COP_R=\dot{Q}_L/\dot{W}_i$ With $\dot{W}_i=1.4\ kW$ $COP=1.57$
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