Question

At the beginning of compression of an ideal Diesel cycle the gas has a temperature and pressure of 40⁰C and 90 kN/m², respectively. The volume ratio of compression is 16:1. The maximum temperature of the cycle is 1400⁰C. Determine, for the cycle,

1. the pressure and temperature at each of the cycle process change points,                            [8]
2. the work done/kg gas,                                                                                                                           [4]
3. the thermal efficiency,                                                                                                                           [4]
4. the work ratio,                                                                                                                                         [3]
5. the mean effective pressure,                                                                                                                [3]
6. the Carnot efficiency within the cycle temperature limits.                                                           [3]

Take, γ=1.4 , cp = 1.004 kJ/kg K.

Answer 1

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