A cylinder fitted with a frictionless piston contains R-134a at 40oC, 80% quality, at which point the

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A cylinder fitted with a frictionless piston contains R-134a at 40oC, 80% quality, at which point the volume is 10 L. The external force on the piston is now varied in such a manner that the R-134a slowly expands in a polytropic process to 400 kPa, 20oC. Calculate the work and the heat transfer for this process.
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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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