Sodium mist behavior in cover gas space of LMFBR. Out-pile experiment.:Out-Pile Experiment

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概要

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• Sodium mist behavior in argon cover gas space over sodium pool was investigated ex-perimentally using of a test vessel having cover gas volume of 100<I>l</I>. Mass concentration and gravitational settling flux of the mist (<I>i.e.</I> sodium aerosol) were determined between pool temperature range of 290520°C. Apparatuses used for the concentration determination were a He-Ne laser mist concentration meter (LCM) and mist traps, which were developed specifically for the present experiment. The mist gravitational settling flux φ was determined by using of collection plates, which were exposed to the mist entrained cover gas over sodium pool.<BR>The experimental results revealed that the concentration <I>C</I> was very high from 0.15 to 20 g/m<SUP>3</SUP>. It increased with pool temperature. The mist particle radii, which were determined from the gravitational settling flux ψ and decay curve of the concentration, were from 1.5 to 13 μm in the range of the present experiment. The vapor evaporation rate φ<SUB><I>e</I></SUB> from the pool surface, which were also determined from the experimental ψ data, were found to increase with saturated vapor pressure <I>P<SUB>s</SUB></I> at pool surface. This rate did not depend so strongly on experimental geometries and cover gas flow convection pattern over sodium pool. Evaluations of transient <I>C</I> changing and steady state <I>C</I> fluctuation indicated that the mist formation was occurred near the pool surface.

• 一般社団法人 日本原子力学会の論文

著者

• TAKAHASHI June

  Oarai Engineering Center, Power Reactor and Nuclear Fuel Development Corp.

• HIMENO Yoshiaki

  Oarai Engineering Center, Power Reactor and Nuclear Fuel Development Corp.

関連論文

• Sodium mist behavior in cover gas space of LMFBR. Out-pile experiment.:Out-Pile Experiment
• Design of High Power Electron Linac at PNC.

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