Using Exergetic Efficiencies Figure P7.133 shows a combined gas turbine–vapor...

Using Exergetic Efficiencies

Figure P7.133 shows a combined gas turbine–vapor power plant operating at steady state. The gas turbine is numbered 1–5. The vapor power plant is numbered 6–9. The accompanying table gives data at these numbered states. The total net power output is 45 MW and the mass flow rate of the water flowing through the vapor power plant is 15.6 kg/s. Air flows through the gas turbine power plant, and the ideal gas model applies to the air. Stray heat transfer and the effects of motion and gravity can be ignored. Let T₀ = 300 K, p₀ = 100 kPa. Determine

(a) the mass flow rate of the air flowing through the gas turbine, in kg/s.