An Official Journal of the American Society of Thermal and Fluids Engineers

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Heat Transfer in Condensation of Vapor of Two-Component Liquid Metal (Alloy Na-K)

ABSTRACT

Experiments on heat transfer in surface condensation of two-component eutectic vapor containing 22 wt.% Na and 78 wt.% К were carried out. Temperature was measured in both the vapor region and the condensate layer with subsequent comparison of the obtained temperature profiles. Significant overfalls of temperature, of an order 100-180°C, were found in a narrow vapor-condensate boundary layer. As a result, a two-threshold decrease in the coefficient of heat transfer determined earlier for pure vapors of sodium and potassium takes place. However, no considerable enrichment of condensate by the most volatile component such as potassium was noted.