(Solved): A power plant operates on a regenerative vapor power cycle with one open feedwater heater. Steam en ...

A power plant operates on a regenerative vapor power cycle with one open feedwater heater. Steam enters the first turbine stage at

and expands to

, where some of the steam is extracted and diverted to the open feedwater heater operating at 1

. The remaining steam expands through the second turbine stage to the condenser pressure of

. Saturated liquid exits the open feedwater heater at

. The net power output for the cycle is

. Assume that both turbine stages and both pumps have an isentropic efficiency of

. Determine: (a) the percent cycle thermal efficiency. (b) the mass flow rate into the first turbine stage, in

. (c) the rate of entropy production in the open feedwater heater, in

.