Answer Happy

a. Determine the net power output of the cycle, in Btu/hr.
b. Determine the rate of heat transfer, in Btu/h, to the working
fluid passing through the steam generator.
c. Determine the thermal efficiency of the cycle.
Water is the working fluid in a regenerative Rankine cycle with one open feedwater heater. Steam enters the turbine at 1400 lbf/in- and 1000°F and expands to 120 lbf/in.-, where some of the steam is extracted and diverted to the open feedwater heater operating at 120 lbf/in. The remaining steam expands through the second-stage turbine to the condenser pressure of 2 lbf/in.- Each turbine stage and both pumps have isentropic efficiencies of 85%. Flow through the condenser, open feedwater heater, and steam generator is at constant pressure. Saturated liquid exits the open feedwater heater at 120 lbf/in.? The mass flow rate of steam entering the first stage of the turbine is 2.36x100 Ib/h.