In a steam regenerative cycle, steam leaves the boiler at 4 MPa and 400°C and 4 MPa. After expansion to 400 kPa, some of the steam is extracted into an open feedwater heater, operating at 400 kPa. The water leaving the OFH is at 400 kPa and is a saturated liquid. The water that is not extracted leaves the turbine at 10 kPa.
(a) Determine the cycle's efficiency
(b) Compare this efficiency with the efficiency of a similar ideal Rankine cycle. (Steam leaving the boiler at 4 MPa and 400°C, condenser pressure of 10 kPa).