Pressure-Enthalpy Diagram for Water and Steam Based on the IAPWS-95 Formulation for General and Scientific Use 10000 Joule-Thomson Inversion 1000 Pressure, bar 100 10 1 10% 20% 30% 40% 50% 60% 70% 80% 90% 0.1 0.01 0 500 Drawn with SteamTab Duo V3.0. 1000 1500 2000 2500 Enthalpy, kJ/kg 3000 3500 4000 4500 5000 Copyright © 1998 ChemicaLogic Corporation.