Use role of thumb, heuristics and design procedure to (i) Determine the compressor frame size, number of stages, rotational speed, shaft power requirement, and discharge temperature required to compress 15,600 SCFM of a natural gas from 40 psia and 85F to 120 psia. (ii) Compare the power requirement to that under isentropic conditions.

Given the following conditions, Mw = 53.0, P1 = 40 psia, inlet pressure, tl = 85oF, inlet temperature, Z1 = 0.97, P2 = 120 psia, = 1.23, Pc = 600 psia, Tc = 715oR (SCFM: at 14.7 psi and 60oF, Z = 1).