Work in polytropic process,reversible,ss Polytropic:pu"constant If△PE,△KE are neglected: -=-omm -1 m rev p2U2-p1U1） (polytropic,n≠l) Any gas/liquid Different from the one for closed system,eq.(3.54) w=y-p出 (n≠1) 1-n =-(p1w)ln(p2/p1) (polytropic,n 1) 上降文通大学 April 28,2019 5 SHANGHAI JIAO TONG UNIVERSITYApril 28, 2019 5 Work in polytropic process, reversible, ss Polytropic: If ∆PE, ∆KE are neglected: Any gas/liquid Different from the one for closed system, eq.(3.54) 2 2 1 1 (n 1) 1 p v p v w n    