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New International Formulation for the Thermal Conductivity of Heavy Water



Marcia L. Huber, Richard A. Perkins, Marc Assael, Stella Monogenidou, Robert Hellmann, Jan Sengers


The International Association for the Properties of Water and Steam (IAPWS) has adopted a new formulation for the thermodynamic properties of heavy water. This manuscript describes the development of a new correlation for the thermal conductivity of heavy water that is consistent with the new equation of state and is valid for fluid states up to 825 K and 250 MPa with uncertainties ranging from 1.5% to 6% depending on the state point. Comparisons with experimental data and with an earlier thermal-conductivity formulation are presented. The new formulation accounts for the critical enhancement of the thermal conductivity, which was not incorporated in the previous formulation. Furthermore, in the zero-density limit, the new formulation is based on thermal conductivity values at temperatures from 250 to 2500 K obtained from the kinetic theory of polyatomic gases. In addition, the new formulation is applicable in a larger range of pressures than the previous formulation.
J. Phys. & Chem. Ref. Data (JPCRD) -


IAPWS, transport properties, thermal conductivity, heavy water.


Huber, M. , Perkins, R. , Assael, M. , Monogenidou, S. , Hellmann, R. and Sengers, J. (2022), New International Formulation for the Thermal Conductivity of Heavy Water, J. Phys. & Chem. Ref. Data (JPCRD), National Institute of Standards and Technology, Gaithersburg, MD, [online],, (Accessed May 18, 2024)


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Created March 9, 2022, Updated November 29, 2022