Phase change Pe 22.09 MPa Evaporation,Condensation 30 MPa 10 MPa T Critical ·Liquid state: At given T,p>Psat point Liquid Vapor 1.014bam At given p,T<Tsa subcooled liquid Liquid-vapor 100C /compressed liquid 20C Specific volume Two-phase liquid-vapor mixture Critical Liquid point Vapor state: a"b Melting Saturated vapor Vaporization a ●Superheated vapor Solid Triple point Vapor Sublimation Melting,Freezing b Sublimation,deposition 上游充通大 March 12,201 Temperature 12 SHANGHAI JLAO TONG UNIVERSITYMarch 12, 2019 12 Phase change Evaporation, Condensation • Liquid state: • At given p, T<Tsat, subcooled liquid / compressed liquid • Two-phase • liquid-vapor mixture • Vapor state: • Saturated vapor • Superheated vapor Melting, Freezing Sublimation, deposition At given T, p>psat