An air standard Otto cycle has a compression ratio of 9. At the beginning of the compression process, the air is at 95 kPa, 27 oC and 500 cm3. The temperature at the end of the expansion process is 790 K. Assume constant specific heats for air at room temperature.Determine:2.1 the highest temperature and pressure in the cycle,2.2 the amount of heat supplied in Joules,2.3 thermal efficiency of the cycle, and2.4 sketch the processes on a P–v and T–s diagrams clearly showing the values of pressuresand temperature obtained in 2.1.

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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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An air standard Otto cycle has a compression ratio of 9. At the beginning of the compression process, the air is at 95 kPa, 27 oC and 500 cm3. The temperature at the end of the expansion process is 790 K. Assume constant specific heats for air at room temperature.

Determine:

2.1 the highest temperature and pressure in the cycle,
2.2 the amount of heat supplied in Joules,
2.3 thermal efficiency of the cycle, and
2.4 sketch the processes on a P–v and T–s diagrams clearly showing the values of pressures

and temperature obtained in 2.1.

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