Superheated steam at 4.0 MPa and 400C enters a turbine and it expands steadily at a...

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Superheated steam at 4.0 MPa and 400C enters a turbine and it expands steadily at a volumetric flow rate of 0.5 m/s. It leaves the turbine at 30 kPa as saturated vapour (Figure 2). The turbine losses heat at a rate of 300 kW to the surrounding medium, which is at a temperature of 30C. Determine: (a) the mass flow rate of the superheated steam at the inlet; 6.82 kg/s (5 marks) (b) the output power generated by the turbine; 3717 kW (c) (JO marks) the rate of entropy generation for the process (includes the turbine and its immediate surrounding). 7.796 kW/K (JO marks) You may use the steam tables to evaluate the properties of the fluid. Superheated steam 4.0 MPa, 400C Q Figure 2 W Saturated vapour 30 kPa This is a SFEE problem w steam. So again, need to tables. (a) Since the volumetri given, just use this specific volume, you mass flow rate (b) Apply SFEE, KE an negligible. Thermo can be found from t (c) Apply the entropy b Sin (dot)-Sout(dot) delta Ssys(dot) where, Sin(dot) ml(dot)s1 Sout(dot) m2(dot)s delta Ssys(dot)=0 For the values of sl off from the steam t substitute all the abo values into the entro should be able to ob value. Superheated steam at 4.0 MPa and 400C enters a turbine and it expands steadily at a volumetric flow rate of 0.5 m/s. It leaves the turbine at 30 kPa as saturated vapour (Figure 2). The turbine losses heat at a rate of 300 kW to the surrounding medium, which is at a temperature of 30C. Determine: (a) the mass flow rate of the superheated steam at the inlet; 6.82 kg/s (5 marks) (b) the output power generated by the turbine; 3717 kW (c) (JO marks) the rate of entropy generation for the process (includes the turbine and its immediate surrounding). 7.796 kW/K (JO marks) You may use the steam tables to evaluate the properties of the fluid. Superheated steam 4.0 MPa, 400C Q Figure 2 W Saturated vapour 30 kPa This is a SFEE problem w steam. So again, need to tables. (a) Since the volumetri given, just use this specific volume, you mass flow rate (b) Apply SFEE, KE an negligible. Thermo can be found from t (c) Apply the entropy b Sin (dot)-Sout(dot) delta Ssys(dot) where, Sin(dot) ml(dot)s1 Sout(dot) m2(dot)s delta Ssys(dot)=0 For the values of sl off from the steam t substitute all the abo values into the entro should be able to ob value.