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Take-home exam problem: As shown in the figure below 50 kg of saturated

water are contained in a vertical piston cylinder arrangement such that the

pressure is 1.4 x 106 N/m². The water experiences a quasistatic heat transfer

causing the piston to rise until it reaches the stops at which point the volume

inside the cylinder is 0.5 m³. The heat transfer process continued until the

water exists as saturated vapor. (100)

(A) Show the process on a P-v and T-v diagram by indicating the critical

states and the saturation lines.

(B) What is the final pressure of the vapor in the cylinder?

(C) Determine the total heat transfer for this process.

stops

(D) Determine the total work transfer for this process.

(E) Determine the magnitude heat transfer to take the system to a supercritical pressure of

240 bar after the piston hits the stops and represent the process on a T-v diagram, what is the

final temperature of the system at this state? (Hint: See problem 1 (c) of

Chapter_03_Tutorials_05_&_07_Problems.pdf)

Fig: 1