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 4 - Energy Analysis of Closed Systems - Problems - Page 196: 4-11

Answer

$W = -205.88 kJ$

Work Step by Step

For an ideal gas: $PV = nRT \rightarrow V_1 = \frac{mRT}{MP}$ With: $m=1.5kg,\ M=28.965\ kg/kmol,\ R = 8.314\ kJ/K.kmol, $ $P_1 = 120kPa,\ T_1 = T_2 = 24°C + 273.15 = 297.15 K$ $V_1 = 1.066\ m³$ Knowing $P_2 = 600 kPa$, for an isothermal process, the work is given by: $W = P_1V_1\ln(\frac{P_1}{P_2})$ $W = -205.88 kJ$
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