An insulated cylinder/piston has an initial volume of 0.15 m3 and contains steam at 400 kPa, 200oC.

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An insulated cylinder/piston has an initial volume of 0.15 m3 and contains steam at 400 kPa, 200oC. The steam is expanded adiabaticly, and the work output is measured very carefully to be 30 kJ. It is claimed that the final state of the water is in the two-phase (liquid and vapor) region. What is your evaluation of the claim?
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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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