Combining the features considered in 9.83, air enters the

Chapter 9, Problem 9.84

(choose chapter or problem)

Combining the features considered in Problem 9.83, air enters the compressor of an air-standard regenerative gas turbine at \(p_{1}=14.7 \mathrm{lbf} / \mathrm{in} .{ }^{2}, T_{1}=530^{\circ} \mathrm{R}\)  with a mass flow rate of 90,000 lb/h. The compressor pressure ratio is 10. The turbine inlet temperature is \(2200^{\circ} \mathrm{R}\), and the regenerator effectiveness is 80%. Compression occurs in two stages with intercooling to 5308R between the two stages at \(50 \mathrm{lbf} / \mathrm{in}^{2}\) The turbine expansion also occurs in two stages, with reheat to \(2000^{\circ} \mathrm{R}\) between the stages at \(50 \mathrm{lbf} / \mathrm{in}^{2}\) The isentropic efficiencies of the compressor and turbine stages are 84 and 88%, respectively. For the regenerative gas turbine, determine the thermal efficiency and net power developed, in hp.