Determine the energy conversion efficiency of a supercritical steam power plant whose steam condenses at 310 K, and reaches 30 MPa in the primary heater. Assume that the inlet pump state is saturated for simplicity, that the maximum system temperature is 923 K and that the overall isentropic efficiency of the turbines is 0.93 (several machines in series). The overall efficiency of the pumps is 0.75. Calculate also the thermal power input and steam-flow rate for 1000 MW of power output.