EDN: OGNZUB
Authors & Affiliations
Alchagirov B.B., Kanametova O.Kh., Khabilov Z.Yu., Dyshekova F.F.
Kabardino-Balkarian State University named after H.M. Berbekov, Nalchik, Russia
Alchagirov B.B. – Professor of the Department of Theoretical and Experimental Physics, Dr. Sci. (Phys.-Math.). Contacts: 173, Chernishevskogo st., Nal’chik, Russia. Tel.: +7 (963) 281-98-27; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it..
Kanametova O.Kh. – Senior Lecturer, Lead Engineer.
Khabilov Z.Yu. – Master's Student at the Institute of Physics and Mathematics.
Dyshekova F.F. – Senior Lecturer, Cand. Sci. (Phys.-Math.).
Abstract
Alkali metals and their alloys have unique physical and chemical properties – low density and viscosity, high thermal and electrical conductivity, a wide range of liquid state, high chemical activity, etc. Alkali metals have a variety of properties that provide favorable conditions for their wide practical application in nuclear and space energy as light efficient heat carriers, in the field of chemical current sources like batteries and fuel cells with high specific energy intensity, durability and miniaturization. All this indicates the need to strengthen and expand the field of research, especially in the most promising and relevant areas, especially in calculating the critical temperatures of alkali metals. Such data are necessary for the purpose of successfully solving the problem of a sharp increase in the operating resources of space power plants and their capacities, which requires further research into the thermophysical and physicochemical properties of alkali metals and their alloys.
The paper provides estimated calculations of the critical temperatures of the Na32K68 eutectic melt using the most reliable experimental data on the temperature dependence of surface tension, approximated by linear equations.
Keywords
surface finning, energy release, extended surface, straight fin, rectangular profile, the efficiency of the fin, heat flow, non-stationary problem of heat conduction, method of finite integral transformations
Article Text (PDF, in Russian)
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