l

I IS M SAS 2. (4 Points) Steam generated at a pressure of 6 MPa and a temperature of 400 C is supplied to a turbine via a throttle valve. The insulated throttle valve reduces the inlet steam turbine pressure to 5 MPa. Expansion in the turbine is adiabatic to a pressure of 0.2MPa. The isentropic efficiency of the turbine is 82%. The surroundings are at 0.1 MPa and 20 C. a) Determine the maximum possible (actual) work that can be extracted from the Turbines steam turbine, if the mass flow rate of steam is 10 kg/s. b) Also determine the entropy generated in the process in kJ/K. c) Calculate the work increase or decrease from the steam turbine in kJ/kg because of the use of a throttle valve. usually Assum REVERS