4.47   Steam enters a turbine operating at steady state with a mass flow of 10 kg/min, a specific enthalpy of 3100 kJ/kg, and a velocity of 30 m/s. At the exit, the specific enthalpy is 2300 kJ/kg and the velocity is 45 m/s. The elevation of the

4.50   Steam enters the first-stage turbine shown in Fig. P4.50 at 40 bar and 5008C with a volumetric flow rate of 90 m3/min. Steam exits the turbine at 20 bar and 4008C. The steam is then reheated at constant pressure to 5008C before entering the second-stage turbine. Steam leaves the second stage as saturated vapor at 0.6 bar. For operation at steady state, and ignoring stray heat transfer and kinetic and potential energy effects, determine the

(a)     mass flow rate of the steam, in kg/h.

(b)    total power produced by the two stages of the  turbine, in kW.

(c)    rate of heat transfer to the steam flowing through the reheater, in kW.