Continue Two-stage Compression with Intercooling Savings in work 2t2 2s P2 Isentropic compression pvk const Px _Isothermal_ compression Polytropic pv const compression pvh const Pi Limits:px=p2>savings=0 →An optimum exits! px=p1→savings=0 上游文道大学 May15,2018 6 SHANGHA BAO TONG LINIVERSITYMay 15, 2018 6 Continue Two ‐stage Compression with Intercooling Limits: p x = p2  savings = 0 p x = p 1  savings = 0  An optimum exits! v p p 2 2t Isothermal compression pv = const p 1 p x 2 2s Polytropic compression pv n = const 1 y x Isentropic compression pv k = const Savings in work