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Q2) In an idea dual combustion cycle, the maximum and minimum pressures are 60 bar and 1 bar respectively.

The volume compression ratio is 16:1 and the minimum temperature is 17℃

The cycle mean effective pressure is 10 bar and the air standard efficiency is 60%.

(a) Sketch the cycle on pressure-volume and temperature-specific entropy diagrams (2)

(b) Calculate EACH of the following for 1kg of air;

(i) The total heat supplied; (4)

(ii) The maximum cycle temperature (6)

(iii) The volume of constant pressure heat addition as a percentage of the stroke(4)

C_v = 0.718 kJ/kgK; C_p = 1.005 kJ/kgK; γ = 1.4