2.14 Consider the piston-cylinder arrangement shown in the figure. A frictionless piston is free to move between two sets of stops. When the piston rests on the lower stops, the enclosed volume is 400 L. When the piston reaches the upper stops, the volume is 600 L. The cylinder initially contains water at 100 kPa, 20% quality. It is heated until the water eventually exists as saturated vapor. The mass of the piston requires 300 kPa pressure to move it against the outside ambient pressure. Determine the final pressure in the cylinder, the heat transfer (in kJ), and the work (in kJ) for the overall process.

2.14 Consider the piston-cylinder arrangement shown in the figure. A frictionless piston is free to move between two sets of stops. When the piston rests on the lower stops, the enclosed volume is 400 L. When the piston reaches the upper stops, the volume is 600 L. The cylinder initially contains water at 100 kPa, 20% quality. It is heated until the water eventually exists as saturated vapor. The mass of the piston requires 300 kPa pressure to move it against the outside ambient pressure. Determine the final pressure in the cylinder, the heat transfer (in kJ), and the work (in kJ) for the overall process.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.

Question

2.14 Consider the piston-cylinder arrangement shown in the figure. A frictionless piston is free to
move between two sets of stops. When the piston rests on the lower stops, the enclosed volume is
400 L. When the piston reaches the upper stops, the volume is 600 L. The cylinder initially contains
water at 100 kPa, 20% quality. It is heated until the water eventually exists as saturated vapor. The
mass of the piston requires 300 kPa pressure to move it against the outside ambient pressure.
Determine the final pressure in the cylinder, the heat transfer (in kJ), and the work (in kJ) for the
overall process.

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