Question

Consider the steam turbine in Liquid water at 15°C flows out of a nozzle straight up 15 m. What is nozzle V_exit? Is this a reversible process?

Answer 1

At the given states 

s_i = 6.9552 kJ/kg K; s_e = 7.3593 kJ/kg K

Do the second law for the turbine,

Entropy goes up even if q goes out. This is an irreversible process.