A process under development involves the expansion in an insulated piston-cylinder of water vapor initially occupying 0.15m3 at 400 kPa and 200 C. At the end of the expansion, a first sensor indicates that the piston extracts 30 kJ of work, while a second sensor indicates the presence of a liquid in the piston (therefore, biphasic mixing). Check if this evolution is physically possible, or if possibly one of the sensors is incorrectly calibrated. (Hint: In a biphasic state, what is has more entropy, saturated vapor or saturated liquid

A process under development involves the expansion in an insulated piston-cylinder of water vapor initially occupying 0.15m3 at 400 kPa and 200 C. At the end of the expansion, a first sensor indicates that the piston extracts 30 kJ of work, while a second sensor indicates the presence of a liquid in the piston (therefore, biphasic mixing). Check if this evolution is physically possible, or if possibly one of the sensors is incorrectly calibrated. (Hint: In a biphasic state, what is has more entropy, saturated vapor or saturated liquid

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter6: Forced Convection Over Exterior Surfaces

Section: Chapter Questions

Problem 6.12P

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