Steam enters a turbine with a velocity of 120 m/s at 600 degree Celsius and 600 kPa. The steam leaves the turbine as saturated vapor at 200 kPa with velocity of 180 m/s. Heat is transferred from the turbine to the surroundings in the amount of 30 kJ for every kilogram of steam flowing through the turbine. The mass flow rate of steam through the turbine is 20 kg/s
(A) determine the rate of work done by the steam turbine, in kW
(B) determine the flow area at the entrance to the turbine, in m^2