Abstract
Bubble column is regarded as an effective containment filtration method. A large amount of radioactive aerosol will retain in liquid pool and generate decay heat. And the surface tension, viscosity and other parameters of liquid phase are affected by increasing of the temperature of liquid pool and the presence of aerosol in pool, which in turn affects the formation characteristics of bubbles. Another important factor affecting bubble generation characteristics is the proportion of steam in gas phase, that is, the exchange of mass and energy of gas phase. This paper will investigate the effects of liquid temperature, aerosol and gas phase composition on bubble formation characteristics by analyzing the variation of bubble detachment volume of the orifice in liquid pool.
Highlights
The Containment Filtration and Exhaust System is one important measure to guarantee the integrity of the containment
The gas in the containment is bubbled through the orifice into the bath, and the radioactive aerosol, or inorganic salt is retained in the bath
Radioactive inorganic salts such as iodine can be reacted with sodium thiosulfate in the liquid pool (Wen et al, 2017), and the aerosol is directly retained in the pool by means of mass transfer sedimentation
Summary
The Containment Filtration and Exhaust System is one important measure to guarantee the integrity of the containment. Davidson proposed two different coefficients of 1.378 (Davidson and Schueler, 1960) and 1.138 (Davidson and Harrison, 1963), and K = 0.976 was obtained in the experiment of Kumar (Kumar and Kuloor, 1970) It is the ignoring of the influence of surface tension, viscosity and orifice diameter in formula (1) that leads to diverse empirical results in different experiments. Another bubble diameter calculation model that combines more factors was proposed by Gaddis (Bhuiyan et al, 2015): db =. The present paper focuses on the effects of liquid phase addition of aerosol particles, high temperature liquid phase, gas phase temperature, and composition on the formation characteristics of single bubbles
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