Water is the working fluid in an ideal regenerative Rankine cycle with one closed feedwater heater. Superheated vapor enters the turbine at 15 MPa, 550°C, and the condenser pressure is 10 kPa. Steam expands through the first-stage turbine where some is extracted and diverted to a closed feedwater heater at 1 MPa. Condensate drains from the feedwater heater as saturated liquid at 1 MPa and is trapped into the condenser. The feedwater leaves the heater at 15 MPa and a temperature equal to the saturation temperature at 1 MPa. The mass flow rate of steam entering the first stage of turbine is 120 kg/s. Determine for the cycle: a. the net power developed b. the heat transfer to the working fluid passing through the steam generator, c. the thermal efficiency d. the mass flow rate of condenser cooling water, in kg/s, if the cooling water undergoes a temperature increase of 18°C​