! Required information A Diesel cycle has a compression ratio of 22 and begins its compression at 87 kPa and 15°C. The maximum cycle temperature is 1200°C. Utilize air-standard assumptions. The properties of air at room temperature are R = 0.287 kPa.m3/kg-K, cp=1 = 1.005 kJ/kg-K, cy= 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 of this cycle (in decimal fraction) is

! Required information Problem 09.034 - Ideal Otto Cycle with Variable Specific Heats - DEPENDENT MULTI-PART PROBLEM - ASSIGN ALL PARTS 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 760 kJ/kg of heat is transferred to air during the constant-volume heat-addition process. Take into account the variation of specific heats with temperature. The gas constant of air is R = 0.287 kJ/kg-K. Problem 09.034.a - State After Heat Addition in Variable Heat Capacity Ideal Otto Cycle Determine the pressure and temperature at the end of the heat-addition process. (You must provide an answer before moving on to the next part.) The pressure at the end of the heat-addition process is 3915.8 kPa. The temperature at the end of the heat-addition process is 1647.7 K.

Required information An air-standard Diesel cycle has a compression ratio of 16 and a cutoff ratio of 2. At the beginning of the compression process, air is at 101.0 kPa and 27°C. Assume constant specific heats. The properties of air at room temperature are Cp 1.005 kJ/kg K, c = 0.718 kJ/kg K, R= 0.287 kJ/kg-K, and k = 1.4. Determine the temperature after the heat-addition process. The temperature after the heat-addition process is K.

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