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Wagner W., Pruß A., "The IAPWS Formulation 1995 for the Thermodynamic Properties of Ordinary Water Substance for General and Scientific Use", J.Phys.Chem.Ref.Data, 31(2), 387-535, 2002; Equation 2.5
The article is available for download.
Parameter validity:
273.15 K ≤ T ≤ 633.15 K;
Psat is obtained in the unit chosen for Pc
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