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Q2. For a dual air standard cycle the initial pressure and temperature is 1.02 bar and 274 K, after the initial compression the pressure is 6.27 bar.

The maximum temperature and pressure are 1480 K and 14 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.

Note: For air γ = 1.4 and C_p = 1.005 kJ/ kgK C_v = 0.718 kJ/kgK.