Using Exergetic Efficiencies
Air enters an insulated turbine operating at steady state with a pressure of 5 bar, a temperature of 500 K, and a volumetric flow rate of 3 m3/s. At the exit, the pressure is 1 bar. The isentropic turbine efficiency is 76.7%. Assuming the ideal gas model and ignoring the effects of motion and gravity, determine
(a) the power developed and the exergy destruction rate, each in kW.
(b) the exergetic turbine efficiency.
Let T0 = 20oC, p0 = 1 bar.
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