New international formulation for the thermal conductivity of heavy water

Distinguished University Professor Emeritus Jan Sengers has served on an international task group of the International Association for the Properties of Water and Steam (IAPWS).  Based on the recommendations of this task group, IAPWS issued earlier the “IAWPS Formulation 2020 for the Viscosity of Heavy Water”.  This has now been followed by the “IAWPS Formulation 2021 for the Thermal Conductivity of Heavy Water”.  The 2021 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 2021 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 2021 formulation is applicable in a larger range of pressures than the previous formulation. 

Details about the new IAPWS Formulation can be found in J. Phys. Chem. Ref. Data 51, 013102 (2022), 19pp in an article titled “New international formulation for the thermal conductivity of heavy water” with co-authors M.L. Huber, R.A. Perkins, M.J. Assael, S.A. Monogenidou, R. Hellmann, and J.V. Sengers.

Among his many honors and awards, Sengers is an elected Fellow of the American Association for the Advancement of Science, the American Physical Society, the American Society of Mechanical Engineers, the American Institute of Chemical Engineers (AIChE), the International Association for the Properties of Water and Steam, the World Innovation Foundation and the International Union of Pure and Applied Chemistry and Academician Emeritus of the International Academy of Refrigeration of the Russian Federation and is Correspondent, Royal Netherlands Academy of Sciences.