Solve the following problem:
Q: A boiler delivers steam at 1500 lbf/in.2, 1000 F to a two-stage turbine. After the first stage, 25% of the steam is extracted at 200 lbf/in 2 for a process application and returned at 150 lbf/in 2, 190 F to the feedwater line, the remainder of the steam continues through the low-pressure turbine stage, which exhausts to the condenser at 2 lbf/in 2. One pump brings the feedwater to 150 lbf/in 2 and a second pump brings it to 1500 lbf/in.2. Assume the first and second stages in the steam turbine have isentropic efficiencies of 85% and 80% and that both pumps are ideal. If the process application requires 5000 Btu/s of power, how much power can then be co-generated by the turbine?