In aturbine 4200 kg/min of air expands polytropically from 400 kpa and 1300 k to 100 kpa . the value of index n=1.45 .find work and heat .

[Hint: the equation is mh1+Q=mh2+w
And h2-h1= Cp(T2-T1) ]

Ans. 1)W=29370.017 kw 2)Q=2568.49 kW