A steam turbine operates between 20 bar steam inlet and 0.07 bar exhaust. (1) The heat rejected is calculated as 1938.52 kJ/kg using isentropic expansion and steam tables. (2) The work done by the turbine is 923.48 kJ/kg. (3) The net work done is 921.487 kJ/kg after accounting for pump work. (4) The heat supplied is calculated as 2860 kJ/kg using the net work and heat rejected. (5) The thermal efficiency is 32.21% and theoretical steam consumption is 3.91 kg/kWh.