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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
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
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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.
Transcribed Image Text: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.
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