METEO 300 Lecture Notes - Lecture 29: Isentropic Process, Air Mass
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Me 300 - lecture 29 - isentropic efficiency continued. A compressor compresses air (ideal) from p1 = 0. 65 atm to p2 = 24 x p1. The temperature of air at the inlet is t1 = 275 k. air mass flow rate is 63. 5 kg/s. The compressor has an isentropic efficiency of 0. 94. Compute the required power input to drive this compressor and the exit temperature, t2. *air has a = 1. 4 and = 1000 jkg k. State 1: 1 = 275 k, 1 = 0. 65 atm. State 2s we can use isentropic relations: 2 = 275 124 1 1 1. 41. 4 = 681. 8 k. *remember that the non-deal temperature should be greater than the ideal temperature because the actual case requires more power input to drive the compressor. We can determine (power needed to drive the compressor: = 63. 5: 1000, (707. 7 275) = 27. 5 mw.
