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Q2. In an air standard dual combustion cycle, the initial volume compression ratio is 7/1.

The maximum and minimum temperatures are 1500 K and 300 K, respectively.

The maximum and minimum pressures are 42 bar and 1.42 bar respectively.

(a) Sketch the processes on p-V and T-s diagrams.

(b) Calculate EACH of the following:

(i) the temperature at all points;

(ii) the thermal efficiency;

(iii) the mean effective pressure.

Note: For air g = 1.4 C_p = 1.005 kJ/kgK C_v = 0.718 kJ/kgK