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Q2. A compression ignition engine working on he ideal dual combustion cycle has a compression ratio of 16 :1. The pressure and temperature at the beginning of compression are 0.98 bar and 30℃ respectively.

The pressure and temperature at the completion of heat supply are 60 bar and 1300℃.

Determine EACH of the following:

(a) T₂,T₃ and Ts;(6)

(b) the net specific heat supplied and the net specific work;(8)

(c) the thermal efficiency. (2)

Note: For air g = 1.4 and c_p = 1.005 kJ/kg K, c_v = 0.718 kJ/kgK