Abstract
As a series of experimental determinations of the thermal diffusivity of molten alkali halides, this paper describes measurements on five molten alkali metal chlorides (LiCl, NaCl, KCl, RbCl, and CsCl) in the temperature range up to 1440 K by the forced Rayleigh scattering method. K2Cr2O7 is employed as a dye substance to color the transparent molten salts. The accuracy is 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 steady-state methods show larger values, up to about five times, which may be due to the systematic error caused by the presence of convection and radiation. It is found that the thermal conductivity of these series of molten alkali metal chlorides decreases with increasing molecular weight, and their temperature coefficients are weakly negative.
Similar content being viewed by others
References
Y. Nagasaka and A. Nagashima, Int. J. Thermophys. 12:769 (1991).
S. Kitade, Y. Kobayashi, Y. Nagasaka, and A. Nagashima, High Temp. High Press. 21:219 (1989).
T. Hatakeyama, K. Kadoya, M. Okuda, Y. Nagasaka, and A. Nagashima, Trans. JSME B53:1590 (1987).
T. Hatakeyama, Y. Nagasaka, and A. Nagashima, Proc. ASME-JSME Therm. Eng. Joint Conf. 4:311 (1987).
Y. Nagasaka, T. Hatakeyama, M. Okuda, and A. Nagashima, Rev. Sci. Instrum. 59:1156 (1988).
W. A. Wakeham, A. Nagashima, and J. V. Sengers (eds.), Measurement of the Transport Properties of Fluids, in Experimental Thermodynamics, Vol. III (Blackwell Scientific, Oxford, 1991), pp. 213–225.
Y. Nagasaka, T. Hatakeyama, and A. Nagashima, Trans. JSME B53:2545 (1987).
T. Hatakeyama, Y. Miyahashi, M. Okuda, Y. Nagasaka, and A. Nagashima, Trans. JSME B54:1131 (1988).
Y. Nagasaka and A. Nagashima, Int. J. Thermophys. 9:923 (1988).
N. Nakazawa, M. Akabori, Y. Nagasaka, and A. Nagashima, Trans. JSME B56:1467 (1990).
E. R. Van Artsdalen and I. S. Yaffe, J. Phys. Chem. 59:118 (1955).
I. S. Yaffe and E. R. Van Artsdalen, J. Phys. Chem. 60:1125 (1956).
J. O'M. Bockris and N. E. Richards, Proc. Roy. Soc. Lond. A241:44 (1957).
I. G. Murgulescu and C. R. Telea, Rev. Raum Chim. 22:683 (1977).
M. V. Smirnov, V. A. Khokholov, and E. S. Filatov, Electrochim. Acta 32:1019 (1987).
J. McDonald and H. T. Davis, Phys. Chem. Liq. 2:119 (1971).
V. D. Golyshev, M. A. Gonik, V. A. Petrov, and Yu. M. Putilin, Teplofiz. Vys. Temp. 21:899 (1983).
M. Harada, Personal communication.
Y. Tada, M. Harada, M. Tanigaki, and W. Eguchi, Rev. Sci. Instrum. 49:1305 (1978).
A. Shioi, T. Miura, and M. Harada, Proc. 11th Jap. Symp. Thermophys. Prop. (1990), p. 259.
G. P. Bystrai, V. N. Desyatnik, and V. A. Zlokazov, Atom. Energ. 36:517 (1974).
V. I. Fedorov and V. I. Machuev, Teplofiz. Vys. Temp. 8:912 (1970).
P. V. Polyakov and E. M. Gil'debrandt, Teplofiz. Vys. Temp. l2:1313 (1974).
G. P. Bystrai, V. N. Desyatnik, and V. A. Zlokazov, Zh. Fiz. Khim. 50:353 (1976).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Nagasaka, Y., Nakazawa, N. & Nagashima, A. Experimental determination of the thermal diffusivity of molten alkali halides by the forced Rayleigh scattering method. I. Molten LiCl, NaCl, KCl, RbCl, and CsCl. Int J Thermophys 13, 555–574 (1992). https://doi.org/10.1007/BF00501941
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00501941