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Unformatted text preview: b) What would the temperature of the turbine exhaust be if the turbine processes were isentropic and the exit pressure was 60 kPa? c) Calculate the isentropic efficiency of the turbine. Recitation #3 Carbon-steel balls ( =7833 kg/m 3 and C p = 0.465 kJ/(kg C)) 8 mm in diameter are annealed by heating to 900 C in a furnace and then allowing them to cool slowly to 100 C in ambient air at 35 C. If 2500 balls are to be annealed per hour, determine (a) the rate of heat transfer from the balls to the air and (b) the rate of entropy generation due to heat loss from the balls to the air. (Ans.: 542 W and 0.986 W/K)....
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- Fall '08