Research has shown that the air-standard Otto cycle is more accurate when the two isentr processes are replaced with polytropic processes with a polytropic exponent n=1.4. Consider su cycle when the compression ratio of 9, P=85 KPa, T=25°C, and the maximum cycle temperatu

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Question 1
Research has shown that the air-standard Otto cycle is more accurate when the two isentropic
processes are replaced with polytropic processes with a polytropic exponent n=1.4. Consider such a
cycle when the compression ratio of 9, P=85 KPa, T=25°C, and the maximum cycle temperature is
1250°C.
Determine:
(a) The heat transferred to and rejected from this cycle.
(b) The cycle's thermal efficiency.
Use constant specific heats at room temperature.
Transcribed Image Text:Question 1 Research has shown that the air-standard Otto cycle is more accurate when the two isentropic processes are replaced with polytropic processes with a polytropic exponent n=1.4. Consider such a cycle when the compression ratio of 9, P=85 KPa, T=25°C, and the maximum cycle temperature is 1250°C. Determine: (a) The heat transferred to and rejected from this cycle. (b) The cycle's thermal efficiency. Use constant specific heats at room temperature.
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