Example
Steam enters a turbine with a pressure of 3 MPa, a temp. of 400°C, and a velocity of 150 m/s. 100% saturated vapor exits at 100°C with velocity of 50 m/s. At steady state, the turbine develops work of 500 kJ per kg of steam. There is heat transfer between the turbine and its surroundings at an averaged surface temperature of 500 K. Determine the rate at which entropy is produced within the turbine per kg of steam.