A Rankine cycle with one closed feedwater heater with its drain cascaded backward has a water mass flow rate through the steam generator of 300 lbm/s. Superheated steam enters the turbine system at 2800 psia and 1000°F, and saturated liquid water exits the condenser at 4 psia. The closed feedwater heater receives extracted steam from the turbine at 350 psia, and the temperature of the feedwater exiting the closed feedwater heater is 410°F. Determine the net power produced by the cycle and the thermal efficiency of the cycle if (a) the turbine and pump are isentropic, and (b) the turbine isentropic efficiency is 0.82 and the isentropic efficiencies of the pump is 0.65.
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