Steam enters an adiabatic turbine at 80 bar, 400 C and leaves at 1 bar and saturated

Steam enters an adiabatic turbine at 80 bar, 400 ⁰C and leaves at 1 bar and saturated vapor state. At steady state, the turbine develops work equal to 1 MW through the turbine. Kinetic and potential energy effects are negligible.

(a) Determine the mass flow rate of the steam, in kg/s (10 pts).

(b) Determine the rate at which entropy is produced within the turbine per kg of steam flowing, in kJ/kg·K (5 pts).

(c) Determine the isentropic efficiency of the turbine (10 pts).

(d) Sketch the actual and isentropic processes on the T-s diagram labeled with temperature and specific entropy values at each state (10 pts).