the pressure and temperature at the end of the heat-addition process, (b) the net work output, (c) the thermal efficiency, and (d) the mean effective pressure for the cycle. Answers: (a)

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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9-32 An ideal Otto cycle has a compression ratio of 8. At
the beginning of the compression process, air is at 95 kPa and
27°C, and 750 kJ/kg of heat is transferred to air during the
constant-volume heat-addition process. Taking into account
the variation of specific heats with temperature, determine (a)
adi
the pressure and temperature at the end of the heat-addition
process, (b) the net work output, (c) the thermal efficiency,
and (d) the mean effective pressure for the cycle. Answers: (a)
3898 kPa, 1539 K, (b) 392 kJ/kg, (c) 52.3 percent, (d) 495 kPa
495 kPa
fam
Transcribed Image Text:9-32 An ideal Otto cycle has a compression ratio of 8. At the beginning of the compression process, air is at 95 kPa and 27°C, and 750 kJ/kg of heat is transferred to air during the constant-volume heat-addition process. Taking into account the variation of specific heats with temperature, determine (a) adi the pressure and temperature at the end of the heat-addition process, (b) the net work output, (c) the thermal efficiency, and (d) the mean effective pressure for the cycle. Answers: (a) 3898 kPa, 1539 K, (b) 392 kJ/kg, (c) 52.3 percent, (d) 495 kPa 495 kPa fam
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