Measurement of the thermal diffusivity of molten salts by the forced Rayleigh scattering method

Naoki Nakazawa, Yuji Nagasaka, Akira Nagashima

研究成果: Article査読

2 被引用数 (Scopus)

抄録

Measurements were made of the thermal diffusivity of five molten alkali metal chlorides (LiCl, NaCl, KCl, RbCl, and CsCl) in the temperature range above 1000 °C by the forced Rayleigh scattering method. K2Cr2O7 was used as the dye substance in order to colour the transparent molten salts. The accuracy was estimated to be ±4% to ±11%, depending on the measured salts. In comparison with the present results converted into thermal conductivity, most of the previous experimental data obtained by the steady-state methods show values up to about five times larger, which may be due to the presence of convection and radiation. It was found that the thermal conductivity of this series of molten alkali metal chlorides decreases with increasing molecular weight, and that this temperature coefficients are weakly negative.

本文言語English
ページ(範囲)595-604
ページ数10
ジャーナルHigh Temperatures - High Pressures
23
5
出版ステータスPublished - 1991 12 1

ASJC Scopus subject areas

  • 凝縮系物理学
  • 材料力学
  • 物理化学および理論化学

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