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Q11. Air at a pressure of 1.2 bar and a temperature of 295 K is compressed in an engine cylinder from a volume of 0.4 m3 to a volume of 0.05 m³. The index of compression is 1.55. Heat is then supplied at constant pressure until the volume is 0.1 m3.

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

(b) Calculate EACH of the following:

(i) The Temperature after compression

(ii) The magnitude and direction of the total work transfer

(iii) The total change in entropy.

Note: For air, γ = 1.4 and R = 0.287 kJ/kg K.