DIRECTION: Show your complete solutions. Combined Gas-Vapor Power Cycle: (ANALYSIS) Consider a combined gas-steam power cycle. The topping cycle is a simple Brayton cycle that has a pressure ratio of 8. Air enters the compressor at 20'C at a rate of 40 kg/s and the gas turbine at 950 C. The bottoming cycle is a Reheat Rankine cycle between the pressure limits of 6 Mpa and 12.5 kPa. Steam is heated in a heat exchanger at a rate of 4.8 kg/s by the exhaust gases leaving the gas turbine, and the exhaust gases leave the heat exchanger at 200 C. Steam leaves the high-pressure turbine at 1.0 MPa and is reheated to 400'C in the heat exchanger before it expands in the low-pressure turbine. Assuming 85% isentropic efficiency for all pumps and turbines, determine (a) the moisture content at the exit of the low-pressure turbine, (b) the steam temperature at the inlet of the high-pressure turbine, (c) the net power output and the thermal efficiency of the combined plantSketch the T-S Diagram. Combustion chamber Gas (8 9 turbine Compressor 7 10 Steam turbine Heat exchanger 6 (4 (2 5 Condenser Pump