Consider a turbine; working substance is air.
cp=1.0 kJ/kgK,   k=1.4
v1=0.03 ,   v2=0.08 m3/kg,    p1=2.5bar; state 1 is enterance, state 2 is the exit of the turbine.The turbine is not ideal (isentropic); the air goes through a statechange according to pv^n=constant,     n=1.6 Compute the ideal andactual specific works and turbine efficiency.
pvn=constant,     n=1.6