A regenerative vapor power cycle has two turbine stages with steam entering the first stage at 2500 lbf/in2, and 1000 F and expanding to 140 lbf/in2. Some of the flow is extracted at 140 lbf/in2 and directed to a closed feedwater heater, where it is condensed to a saturated liquid at 140 lbf/in2 before being trapped (diverted) into the condenser. The feedwater leaves the closed heater at 2500 lbf/in2 and 350 F. The condenser pressure is 1 lbf/in2. If the turbine stages and pumps operate isentropically, determine the thermal efficiency of the cycle. You must draw a schematic for this problem.