Steam leaves a power plant steam generator at 500 lbf/in 2, 650 F, and enters the turbine at 490 lbf/in.2, 625 F. The isentropic turbine efficiency is 88%, and the turbine exhaust pressure is 1.7 lbf/in 2. Condensate leaves the condenser and enters the pump at 110 F, 1.7 lbf/in 2. The isentropic pump efficiency is 80%, and the discharge pressure is 520 lbf/in 2. The feedwater enters the steam generator at 510 lbf/in 2, 100 F Calculate the thermal efficiency of the cycle and the entropy generation of the flow in the line between the steam generator exit and the turbine inlet, assuming an ambient temperature of 77 F.