A cylinder fitted with a piston contains 0.5 kg of R-134a at 60C, with a quality of

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A cylinder fitted with a piston contains 0.5 kg of R-134a at 60C, with a quality of 50 percent. The R-134a now expands in an internally reversible polytropic process to ambient temperature, 20C at which point the quality is 100 percent. Any heat transfer is with a constant-temperature source, which is at 60C. Find the polytropic exponent n and shows that this process satisfies the second law of thermodynamics.
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Fundamentals of Thermodynamics

ISBN: 978-0471152323

6th edition

Authors: Richard E. Sonntag, Claus Borgnakke, Gordon J. Van Wylen

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