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Q1. A perfect gas is cooled at constant pressure from a temperature of 1400℃ to a temperature of 1000℃. It is further cooled at constant volume until the temperature is 600℃, the change of specific entropy during this process is 1.202 kJ/kg K. After cooling, the gas is compressed isentropically back to the original pressure.

The temperature of the gas at the end of compression is 737℃.

(a) Sketch The sequence of process on pressure-volume and temperature-specific entropy diagrams. (4)

(b) Calculate EACH of the following:

(i) The values of C_v, γ, C_p and R for the gas; (4)

(ii) The change in specific entropy during the constant pressure process; (2)

(iii) The specific work transfer; (3)

(iv) The specific heat transfer. (3).