A boiler produces steam at a pressure of 7 MPa and a temperature of 350C. The steam is used for electricity production and meet the heat demand of 8800 kJ/second through the generator system ideal co-generation. As much as 25% steam is extracted manually isentropic of the turbine at 600 kPa for the process warming up. The remaining steam is expanded isentropically up to a pressure of 7.5 kPa. Extracted steam for process heating is condensed in the heater (process heater) then mixed with feed water at a pressure of 600 kPa. The mixture is pumped into the boiler at a pressure of 7 MPa. Define: (a) the mass flow rate of steam that must be supplied by the boiler, (b) net power generated by generators, (c) Utilization factor.