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Experimental determination of the thermal diffusivity of molten alkali halides by the forced Rayleigh scattering method. II. Molten NaBr, KBr, RbBr, and CsBr

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Abstract

This is a companion to an earlier paper (on molten alkali metal chlorides) which gives experimental results for the thermal diffusivity of four molten alkali metal bromides: NaBr, KBr, RbBr, and CsBr. The measurements were performed with a forced Rayleigh scattering instrument at temperatures up to 1326 K. The overall uncertainty in the measured thermal diffusivity is estimated to be ±3 to ±11%, depending on the measured salts. The results converted to thermal conductivity show one of the smallest values among other earlier experimental data obtained mainly by the steady-state methods. It is also found that the temperature dependence of the thermal conductivity is weakly negative.

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Authors and Affiliations

  1. Department of Mechanical Engineering, Keio University, 3-14-1 Hiyoshi, 223, Yokohama, Japan

    N. Nakazawa, Y. Nagasaka & A. Nagashima

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  1. N. Nakazawa
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  2. Y. Nagasaka
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  3. A. Nagashima
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Nakazawa, N., Nagasaka, Y. & Nagashima, A. Experimental determination of the thermal diffusivity of molten alkali halides by the forced Rayleigh scattering method. II. Molten NaBr, KBr, RbBr, and CsBr. Int J Thermophys 13, 753–762 (1992). https://doi.org/10.1007/BF00503904

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  • DOI: https://doi.org/10.1007/BF00503904

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