2015-Sustainable Industrial Processing Summit
SIPS 2015 Volume 7: Ionic Liquids & Energy Production
| Editors: | Kongoli F, Gaune-Escard M, Mauntz M, Rubinstein J, Dodds H.L. |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2015 |
| Pages: | 310 pages |
| ISBN: | 978-1-987820-30-0 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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Measuring and Evaluating Thermal Conductivity of Halide Melts as Promising Working Media of Nuclear Power Systems of New Generation
Vasiliy Dokutovich1; Vladimir Khokhlov2; Iraida Korzun1;1INSTITUTE OF HIGH-TEMPERATURE ELECTROCHEMISTRY, Ekaterinburg, Russian Federation; 2INSTITUTE OF HIGH TEMPERATURE ELECTROCHEMISTRY, Ekaterinburg, Russian Federation;
Type of Paper: Regular
Id Paper: 285
Topic: 13
Abstract:
Materials selection is a very important problem for the nuclear power systems of the new generation. In recent years, the interest in the study of salt melts as promising working media including the fuel compositions, coolants as well as the fluids for high-temperature processing of spent fuel, natural and man-made materials containing rare earth and radioactive metals has substantially increased. For these reasons, the reliable experimental data on the thermal conductivity, like other thermophysical properties, are necessary for the development of new nuclear power systems. The thermal conductivity of molten salts, especially fluorides and chlorides, is the most difficult property to measure experimentally due to their corrosiveness at high temperatures. That is why we would have to look for theoretical and semi-empirical methods for evaluating thermal conductivity of molten salts. In this work, we analyze different approaches to forecasting the thermal conductivity of molten salts by the example of fluoride and chloride melts. In particular, the correlation between available experimental values of the thermophysical properties of fluorides melts and the apparent ionic potential of salt medium μc = IŁ Ni *zi *ri-1 where Ni, zi, and ri are mole fraction of i-component of fluoride mixture, nominal charge, and radius of i-cation, respectively, is discussed. The correlation assigned describes adequately the thermal conductivity of binary and ternary fluoride melts and can be used for evaluating that of similar unexplored systems.
Keywords: thermal conductivity, molten salts, halides, nuclear power engineering
This research was partially supported by the Russian Ministry of Education and Science through Targeted Federal Program (project number: 14.607.21.0084).