Print Email Facebook Twitter Using the Quasi-chemical formalism beyond the phase Diagram Title Using the Quasi-chemical formalism beyond the phase Diagram: Density and viscosity models for molten salt fuel systems Author Ocadiz flores, J.A. (TU Delft RST/Reactor Physics and Nuclear Materials) Konings, R. (TU Delft RST/Reactor Physics and Nuclear Materials; European Commission Joint Research Centre) Smith, A.L. (TU Delft RST/Reactor Physics and Nuclear Materials) Date 2022 Abstract CALPHAD models to compute the density and viscosity of four keystone systems related to Molten Salt Reactor (MSR) technology have been optimized: NaCl-UCl3, LiF-ThF4, LiF-UF4, and LiF-ThF4-UF4. Revised thermodynamic assessments of all four systems, using the modified quasichemical formalism in the quadruplet approximation for the description of the liquid solutions, are reported. In the case of NaCl-UCl3, phase diagram and mixing enthalpy data available in the literature are taken into account. For the fluoride systems, recently published data on some solid phases are taken into account, while retaining the most recently published descriptions of the liquid solutions. The densities of the liquid solutions are modelled using pressure-dependent terms of the excess Gibbs energy, while the viscosities are then modelled using an Eyring equation. Both state functions are related to the thermodynamic assessments through the quadruplet distributions. Subject LiF-ThFLiF-ThF-UFLiF-UFMolten Salt ReactorNaCl-UClQuasi-chemical formalism To reference this document use: http://resolver.tudelft.nl/uuid:71efd62f-c24e-4fa2-9c0d-2eb741a08c73 DOI https://doi.org/10.1016/j.jnucmat.2022.153536 ISSN 0022-3115 Source Journal of Nuclear Materials, 561 Part of collection Institutional Repository Document type journal article Rights © 2022 J.A. Ocadiz flores, R. Konings, A.L. Smith Files PDF 1_s2.0_S0022311522000320_main.pdf 2.51 MB Close viewer /islandora/object/uuid:71efd62f-c24e-4fa2-9c0d-2eb741a08c73/datastream/OBJ/view