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Q19. In an air, standard Diesel cycle the volume at the end of heat supply is 1.96 times that at the beginning of heat supply. The temperature at the beginning of compression is 303 K, and that at the end of expansion is 777 K. The thermal efficiency is 66.8%.

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

(b) Calculate EACH of the following:

(i) The heat supplied per kg

(ii) The network output per kg

(iii) The maximum cycle temperature

(iv) The volume compression ratio.

Note: For air, γ = 1.4 and C_p = 1.005 kJ/kg K.