9-39 The compression ratio of an air-standard Otto cycle is 9.5. Prior to the isentropic compression process, the air is

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9 39 The Compression Ratio Of An Air Standard Otto Cycle Is 9 5 Prior To The Isentropic Compression Process The Air Is 1 (1.39 MiB) Viewed 27 times

9-39 The compression ratio of an air-standard Otto cycle is 9.5. Prior to the isentropic compression process, the air is at 100 kPa, 35°C, and 600 cm³. The temperature at the end of the isentropic expansion process is 800 K. Using specific heat values at room temperature, determine (a) the highest temperature and pressure in the cycle; (b) the amount of heat transferred in, in kJ; (c) the thermal efficiency; and (d) the mean effective pressure. Answers: (a) 1969 K, 6072 kPa, (b) 0.59 kJ, (c) 59.4 percent, (d) 652 kPa