Required information An Otto cycle with a compression ratio of 8 begins its compression at $94 kPa$ and $1 0^{?} C$ . The maximum cycle temperature is $88 7^{?} C$ . Utilize air-standard assumptions. The properties of air at room temperature are $R = 0.287 kPa ? m^{3} / kg ? K, c_{p} = 1.005 kJ / kg ? K, c_{V} = 0.718$ $kJ / kg ? K$ , and $k = 1.4$ . Determine the thermal efficiency of this cycle using constant specific heats at room temperature. The thermal efficiency is

Question

Required information An Otto cycle with a compression ratio of 8 begins its compression at

94 kPa

and

1 0^{?} C

. The maximum cycle temperature is

88 7^{?} C

. Utilize air-standard assumptions. The properties of air at room temperature are

R = 0.287 kPa ? m^{3} / kg ? K, c_{p} = 1.005 kJ / kg ? K, c_{V} = 0.718

kJ / kg ? K

, and

k = 1.4

. Determine the thermal efficiency of this cycle using constant specific heats at room temperature. The thermal efficiency is

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