Determine the compressor efficiency

Tests on an adiabatic gas compressor yield values for inlet conditions (T1, P1) and

outlet conditions (T2, P2). Assuming ideal gases with constant heat capacities,

determine the compressor efficiency for one of the following:

(a) T1 = 300 K, P1 = 2 bar, T2 = 464 K, P2 = 6 bar, CP /R = 7/2.

(b) T1 = 290 K, P1 = 1.5 bar, T2 = 547 K, P2 = 5 bar, CP /R = 5/2.

(c) T1 = 295 K, P1 = 1.2 bar, T2 = 455 K, P2 = 6 bar, CP /R = 9/2.

(d) T1 = 300 K, P1 = 1.1 bar, T2 = 505 K, P2 = 8 bar, CP /R = 11/2.

(e) T1 = 305 K, P1 = 1.5 bar, T2 = 496 K, P2 = 7 bar, CP /R = 4.