A turbine with an isentropic efficiency of 0.82 receives an ideal gas mixture consisting of 50% (by volume) CO2, 25% N2, and 25% O2. The mixture enters with a volumetric flow rate of 7.5 m3/s, a pressure of 1.5 MPa, and a temperature of 1000°C. The mixture exits at a pressure of 125 kPa. Assuming that the mixture has constant specific heats, determine the exit temperature, the power produced, and the entropy generation rate if (a) the turbine is insulated, and (b) there is a heat loss of 50 kW from the turbine, whose surface temperature is maintained at 320 K.
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