An insulated and non-restricted upright piston-cylinder system has an initial volume of 0.15 cubic meter and contains steam at 400 kPa, 200 deg. Celsius. The steam is expanded adiabatically, 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 region. What is your evaluation of the claim assuming that the process is reversible? (Hint: To evaluate this claim, you must show if the final state is in the two-phase region and that the process obeys both the 1st and 2nd law of thermodynamics.)

Elements Of Electromagnetics
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ISBN:9780190698614
Author:Sadiku, Matthew N. O.
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An insulated and non-restricted upright piston-cylinder system has an initial volume of 0.15 cubic
meter and contains steam at 400 kPa, 200 deg. Celsius. The steam is expanded adiabatically, 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 region. What is your evaluation of the claim assuming that the process is
reversible? (Hint: To evaluate this claim, you must show if the final state is in the two-phase region
and that the process obeys both the 1st and 2nd law of thermodynamics.)
Transcribed Image Text:An insulated and non-restricted upright piston-cylinder system has an initial volume of 0.15 cubic meter and contains steam at 400 kPa, 200 deg. Celsius. The steam is expanded adiabatically, 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 region. What is your evaluation of the claim assuming that the process is reversible? (Hint: To evaluate this claim, you must show if the final state is in the two-phase region and that the process obeys both the 1st and 2nd law of thermodynamics.)
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