1. A steam power plant has high and low pressures of 20 MPa and 10 kPa, respectively, and one open FWH operating at 1 MPa with the exit as saturated liquid. The maximum temperature is 800?C, and the turbine has a total power output of 5 MW. Find the fraction of the extraction flow to the FWH and the total condenser heat transfer rate.
2. A low-temperature power plant operates with R-410a maintaining-20?C in the condenser, a high pressure of 3 MPa with superheat to 80?C. There is one open FWH operating at 800 kPa with an exit as saturated liquid at 0?C. Find the extraction fraction of the flow out of the turbine and the turbine work per unit mass flowing through the boiler.