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Reference Correlations for Thermophysical Properties of Liquid Water at 0.1 MPa



Jan Hruby, Jaroslav Patek, Jaroslav Klomfar, Monika Souckova, Allan H. Harvey


Simple but highly accurate correlations have been developed for the thermodynamic properties, viscosity, thermal conductivity, and static dielectric constant of liquid water as a function of temperature at a pressure of 0.1 MPa. The temperature range covered in most cases is from 253.15 K to 383.15 K; this includes some temperatures where liquid water is metastable. The correlations may be extended up to 0.3 MPa without significant loss of accuracy. These correlations are designed to reproduce the best available data, which in most cases are described by formulations issued by the International Association for the Properties of Water and Steam (IAPWS). The equations presented here are simple enough to be used in applications such as spreadsheets. They provide a convenient alternative to the more complicated IAPWS formulations in cases where only liquid properties at near-atmospheric pressure are of interest, without increasing the uncertainty beyond that of the more complex formulation.
J. Phys. & Chem. Ref. Data (JPCRD) -


calibration, density, dielectric constant, heat capacity, speed of sound, thermal conductivity, thermodynamic properties, viscosity, water


Hruby, J. , Patek, J. , Klomfar, J. , Souckova, M. and Harvey, A. (2009), Reference Correlations for Thermophysical Properties of Liquid Water at 0.1 MPa, J. Phys. & Chem. Ref. Data (JPCRD), National Institute of Standards and Technology, Gaithersburg, MD, [online], (Accessed May 21, 2024)


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Created January 14, 2009, Updated October 12, 2021