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Thermal Diffusivity Measurement of Molten Fluoride Salt Containing ThF4 (Improvement of the Simple Ceramic Cell)

  • Yoshio Kato
  • Nobuyuki Araki
  • Kiyosi Kobayasi
  • Atsushi Makino

Abstract

Design conditions of a cylindrical ceramic cell were estimated. One can use it to measure the absolute value of thermal diffusivity of molten salts by applying the stepwise heating method. For a thickness l of the salt specimen, the thickness of the upper and lower parallel ceramic base plates which hold the specimen between them should be greater than 5l and the radius of the base plates should be greater than 15l. This satisfies the theoretical conditions of a semi-infinite solid base plate to sufficient accuracy. Using a ceramic cell which has a large enough value of l, the thermal diffusivity, a, of molten fluoride salt: LiF-BeF2-ThF4 (67-18-15 mol%) was measured. The value a = 2.34x10-7 + 6.10x10-11(T-788) m2s-1 was obtained in the temperature range 823 ⩽ T ⩽ 983 K.

Keywords

Thermal Diffusivity Molten Salt Base Plate Sample Salt Thermal Diffusivity Measurement 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. [1]
    Kobayasi, K. and Araki, N., “Measuring Method of Thermal Diffusivity of Liquid by Stepwise Heating of Thin Layer”, Proc. 5th Int. Heat Transfer Conf. Vol. V, (The Science Council of Japan), 247–251 (1974).Google Scholar
  2. [2]
    Kato, Y. and Furukawa, K., “Thermal Diffusivity Mesurement of Molten Salts by Simple Apparatus”, Proc. 1st Int. Symp. on Molten Salt Chemistry and Technology, (Molten Salt Committee of The Electrochemical Society of Japan), 269–272 (1983).Google Scholar
  3. [3]
    Kato, Y., Furukawa, K., Araki, N. and Kobayasi, K., “Thermal diffusivity measurement of molten salts by use of a simple ceramic cell”, High Temp.-High Press., 15, 191–198 (1983).Google Scholar

Copyright information

© Purdue Research Foundation 1985

Authors and Affiliations

  • Yoshio Kato
    • 1
  • Nobuyuki Araki
    • 2
  • Kiyosi Kobayasi
    • 2
  • Atsushi Makino
    • 2
  1. 1.Department of Fuels and Materials ResearchJapan Atomic Energy Research InstituteTokai, Ibaraki-Ken, 319-11Japan
  2. 2.Department of Mechanical EngineeringShizuoka University3-5-1, Johoku, Hamamatsu, ShizuokaJapan

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