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On the Employment of a Chloride or Fluoride Salt Fuel System in Advanced Molten Salt Reactors, Part 1: Thermophysical Properties and Core Criticality

Author

Listed:
  • Omid Noori-kalkhoran

    (School of Engineering, The University of Liverpool, Liverpool L69 3GH, UK
    School of Engineering, Cardiff University, The Parade, Cardiff CF24 3AA, UK)

  • Dzianis Litskevich

    (School of Engineering, The University of Liverpool, Liverpool L69 3GH, UK)

  • Anna Detkina

    (School of Engineering, The University of Liverpool, Liverpool L69 3GH, UK)

  • Lakshay Jain

    (School of Engineering, The University of Liverpool, Liverpool L69 3GH, UK)

  • Gregory Cartland-Glover

    (Scientific Computing Department, Science and Technology Facilities Council, Daresbury Laboratory, SciTech Daresbury, Warrington WA4 4AD, UK)

  • Bruno Merk

    (School of Engineering, The University of Liverpool, Liverpool L69 3GH, UK)

Abstract

Molten salt reactors (MSRs), as one of the six main technologies of Gen IV, can meet the broad area of sustainability, economics, safety and reliability, proliferation resistance and physical protection goals. One of the main and first challenges in designing molten salt fast reactors (MSFRs) is the selection of an appropriate molten salt fuel system based on the envisaged applications and objectives. In this study’s series, a full-scope evaluation has been conducted about employing either chloride or fluoride salt fuels as the main competitors’ candidates for fuel salt in MSFR designs. Two distinguished projects, EVOL (CNRS, Grenoble-France), based on fluoride salt, and iMAGINE (The University of Liverpool, UK), based on chloride salts, were considered in order to achieve this goal as case studies. The first part of this series (part 1—this article) deals with the investigation of the thermophysical properties of the salt fuel system, criticality search and neutron-flux energy spectrum. An identical typical design of the MSFR core has been considered for a neutronic simulation by using MCNPX V2.7 based on the chemical composition of the fuel salt mentioned in both projects. The thermophysical evaluation has been conducted through literature research and theoretical methods based on the experimental values for the salt component properties. The results of the study are presented for thermophysical properties, including the melting point, vapour pressure/boiling point, specific heat capacity, thermal conductivity and density, in addition to neutronic simulation for the core critical dimension and neutron-flux spectrum of both the chloride- and fluoride-based salt fuel systems. In the discussion of the results, it is concluded that both the chloride and fluoride salt fuel systems have benefits that are seen on different comparative parameters. The delivered data will provide future decision makers with evidence for the salt choice for balancing their design objectives with the opportunities and expectations. Thus, a final selection of the most appropriate salt fuel system to be used in MSFRs will be postponed for more investigation in the final part of this article series, combining the data with different potential user profiles.

Suggested Citation

  • Omid Noori-kalkhoran & Dzianis Litskevich & Anna Detkina & Lakshay Jain & Gregory Cartland-Glover & Bruno Merk, 2022. "On the Employment of a Chloride or Fluoride Salt Fuel System in Advanced Molten Salt Reactors, Part 1: Thermophysical Properties and Core Criticality," Energies, MDPI, vol. 15(23), pages 1-20, November.
  • Handle: RePEc:gam:jeners:v:15:y:2022:i:23:p:8865-:d:982521
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    References listed on IDEAS

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    1. Bruno Merk & Anna Detkina & Dzianis Litskevich & Seddon Atkinson & Gregory Cartland-Glover, 2020. "The Interplay between Breeding and Thermal Feedback in a Molten Chlorine Fast Reactor," Energies, MDPI, vol. 13(7), pages 1-15, April.
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