The gass-side mass transfer coefficient and the interfacial area under the turbulent flow over the packing of parallel expanded metal sheets

Specific interfacial area has been computed from experimental values of the gas-side volume mass transfer coefficient, kga, and the theoretically derived expressions for gas-side mas transfer coefficient per unit area of interfacial surface, kg. The results have been compared with the specific interfacial area determined experimentally using the chemical method.

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The gas side mass transfer coefficient in the turbulent flow in a packing with a significant dependence of the interfacial area on the density of irrigation

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19842756 ◽

1984 ◽

Vol 49 (12) ◽

pp. 2756-2762

Author(s):

Jan Červenka ◽

Václav Kolář

Keyword(s):

Mass Transfer ◽

Transfer Coefficient ◽

Mass Transfer Coefficient ◽

Gas Flow ◽

Interfacial Area ◽

Two Phase ◽

Expanded Metal ◽

Significant Dependence ◽

Experimental Values ◽

Density Of Irrigation

A theoretically derived relationship has been applied for the gas-side mass transfer coefficient to experimental values of kG. The experimental data have been obtained under the two-phase flow of gas and liquid in a plane vertical packing manufactured of the expanded metal sheet. This packing exhibits a significant dependence of the extent of interfacial area, and hence the geometry of the channel available for gas flow, on the density of irrigation.

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Liquid side mass transfer coefficient and interfacial area at vertical liquid flow on expended metal sheet packing

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19803089 ◽

1980 ◽

Vol 45 (11) ◽

pp. 3089-3100 ◽

Cited By ~ 2

Author(s):

Zdeněk Brož ◽

Mirko Endršt

Keyword(s):

Mass Transfer ◽

Transfer Coefficient ◽

Mass Transfer Coefficient ◽

Liquid Flow ◽

Empirical Relation ◽

Interfacial Area ◽

Expanded Metal ◽

Wide Range ◽

Predicted Values ◽

Good Agreement

Prediction of the liquid side mass transfer coefficient k1 at vertical liquid flow on the expanded metal packing is based on the penetration model according to Higbie. The experimental value of mass transfer coefficient k1 at absorption of sparingly soluble gases with differing diffusivities in water (propane, carbon dioxide and helium) are in a good agreement with the predicted values in a wide range of linear wetting densities. Interfacial area is determined by the chemical method and is correlated by an empirical relation.

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Errors in Measurement of Interfacial Area and Mass Transfer Coefficient in Liquid in Apparatus with Mobile Packing

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19931345 ◽

1993 ◽

Vol 58 (6) ◽

pp. 1345-1353

Author(s):

Zdeněk Palatý

Keyword(s):

Mass Transfer ◽

Transfer Coefficient ◽

Mass Transfer Coefficient ◽

Interfacial Area ◽

Solution Temperature ◽

Adsorption Solution ◽

Specific Interfacial Area ◽

Interfacial Areas ◽

Error Of Measurement

The paper deals with an analysis of errors of measurement of interfacial area and mass transfer coefficient in liquid in an absorber with mobile packing. The system of CO2-NaOH has been used for the testing with recirculation of the adsorption solution. The error of measurement of the absorption solution temperature, CO2 concentration in the gas, the composition of absorption solution, the mass transfer coefficient in gas, and the volume of absorption solution at the beginning and at the end of the measurement have been investigated with regard to their effects upon the resulting values of specific interfacial area and mass transfer coefficient in liquid. From the simulation calculations if follows that the interfacial areas most strongly affected by the error of measurement of CO2 concentration in gas, whereas the mass transfer coefficient in liquid is considerably affected by inaccuracies in measuring the volume of absorption solution at the beginning and at the end of experiment.

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Effect of liquid viscosity on liquid side mass transfer coefficient at vertical film flow on expanded metal sheets

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19830861 ◽

1983 ◽

Vol 48 (3) ◽

pp. 861-876 ◽

Cited By ~ 2

Author(s):

Zdeněk Brož ◽

Mirko Endršt

Keyword(s):

Mass Transfer ◽

Transfer Coefficient ◽

Mass Transfer Coefficient ◽

Kinematic Viscosity ◽

Film Flow ◽

Vertical Surface ◽

Liquid Viscosity ◽

Expanded Metal ◽

Metal Sheets ◽

Good Agreement

Experimental results are presented on the effect of liquid viscosity on absorption rate of carbon dioxide into a liquid film flowing downward the vertical surface of expanded metal sheets. On basis of these results the conclusion has been reached that the Highbie model does not enable to predict the effect of kinematic viscosity on liquid side mass transfer coefficient k1. The film-penetration model has been proposed where the existence of non-mixed region is assumed at the interface with the thickness ϑ and to it periodically incoming disturbances with the length scale of disturbance λ and characteristic Reynolds number of disturbance equal to one. On basis of experimental data were evaluated the dimensionless thicknesses of the film and penetration regions ϑ+ = 0.04 and λ+ = 10.6. A good agreement of the measured and calculated values of the mass transfer coefficient k1 were obtained for three types of expanded metal sheets of vertical pitch diagonal 10, 16 and 28 mm and nine liquids with kinematic viscosities within the range from 0.6 to 15.1 μm2s-1.

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