Air at 5 bar, 500 K, and a volumetric flow rate of 8 m^3/s enters an insulated turbine operating at steady and exits with a pressure of 1 bar. The isentropic turbine efficiency is 85%. Assume the ideal gas model h2s=T2s, and ignore the effects of motion and gravity. Determine the power devolped in kW, The exergy destruction rate in kW, and evaluate the exergetic turbine efficiency. Let To=25 deg C, po=1 bar.