Rate of Components Evaporation From Sulfuric Acid Solution During Its Concentrating in Air Flow

Abstract

Abstract.1 A method of experimental determination of components evaporation rate from a sulfuric acid solution during its concentrating in the flow of neutral gas is proposed. Using this methodology, the dependence of the evaporation rate on the composition of the acid solution is set. The critical value of the weight fraction of water in the solution was found at which the character of this dependence changed. An empirical equation for the approximate calculation of the evaporation rate of components from solution in the air flow was obtained.

Source term model of radioactive liquid spills for actual decision support systems

“…American National Standards ANSI/ANS-18.1-1999 [6] ANSI/ANS-18.1-2016 [7] have information on radioactive source term for normal operation of light water reactors. Among the latest studies in the direction of investigation on the intensity of evaporation from open surfaces of liquids [8][9][10][11] can be considered. Detailed description of the models integrated in actual decision support system JRODOS can be found in [12][13][14].…”

“…Detailed description of the models integrated in actual decision support system JRODOS can be found in [12][13][14]. Studies on thermodynamic calculations ventilation and air conditioning, experimental data of heat and mass transfer during evaporation of the liquid with a free surface, thermodynamic properties of water and steam are collected in [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20]. Information on existing toolkit for ventilation task solving, atmospheric dispersion modelling and dose projection such as ANSYS, Solid Works, OpenFOAM, MACCS, RASCAL, HOTSPOT is concentrated in [21][22][23][24][25][26][27][28].…”

“…Using such products as ANSYS software [13], OpenFOAM [14], SolidWorks [15] additionally studies the impact of forced ventilation system on the velocity of the underlying layer supply air. The velocity values found are used to clarify the surface temperature of the liquid according to [8][9][10][11][12]. The results of the impact analysis revealed that the speed the incoming flow has a significant effect on the evaporation intensity, as the consequenceon the ejection.…”