A piston-cylinder assembly initially contains 100 kPa pressure and 2 L of air at 25 ° c. Later, the air is compressed to 620 kPa pressure and 160 ° C. The useful work done for compression is 1.22 kJ. The ambient pressure and temperature are 100 kPa and temperature respectively. Accepting that it is 25 ° C, a) The availability of air in the initial and final cases, b) Minimum work required for the compression process, c) Calculate the second-law yield of the process.

A piston-cylinder assembly initially contains 100 kPa pressure and 2 L of air at 25 ° c. Later, the air is compressed to 620 kPa pressure and 160 ° C. The useful work done for compression is 1.22 kJ. The ambient pressure and temperature are 100 kPa and temperature respectively. Accepting that it is 25 ° C, a) The availability of air in the initial and final cases, b) Minimum work required for the compression process, c) Calculate the second-law yield of the process.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

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Concept explainers

Basic Thermodynamic Processes

The word 'thermodynamics' can be divided into two words, 'thermo' and 'dynamics'. The word thermo deals with the heat and thermal phenomenon, whereas dynamics deals with forces or external agent that drives the heat flow or aids in the motion of heat.

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Thermodynamics

A piston-cylinder assembly initially contains 100 kpa pressure and 2 L of air at 25 ° c. Later, the air is compressed to 620 kPa pressure and 160 ° c.
The useful work done for compression is 1.22 kJ. The ambient pressure and temperature are 100 kPa and temperature respectively. Accepting that it is 25 ° C,
a) The availability of air in the initial and final cases,
b) Minimum work required for the compression process,
c) Calculate the second-law yield of the process.

Science that deals with the amount of energy transferred from one equilibrium state to another equilibrium state.

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