Steam enters a two-stage adiabatic turbine at 8 MPa and 500°C. It expands in the first stage to a state of 2 MPa and 350°C. Steam is then reheated at constant pressure to a temperature of 500°C before it is routed to the second stage, where it exits at 30 kPa and a quality of 97 percent. The work output of the turbine is 5 MW. Assuming the surroundings to be at 25°C, determine the reversible power output and the rate of energy destruction within this turbine.

Transcribed Image Text:

Heat 2 MPa 350°C 2 MPa 500 C 8 MPa 500°C Stage I Stage II 5 MW 30 kPa x 97%