Topic
Mass transfer coefficient
About: Mass transfer coefficient is a research topic. Over the lifetime, 7827 publications have been published within this topic receiving 168354 citations.
Papers published on a yearly basis
Papers
More filters
TL;DR: In this article, the gas holdup, bubble size distribution, and Sauter mean diameter for oxygen micro-bubble dispersions in water in an acrylic-acid resin column with an inner diameter of 0.15m, and with a working liquid height varying from 0.500 to 1.850m.
60 citations
TL;DR: In this article, a procedure for the prediction of wall-bed heat transfer coefficient for bubble columns and gas-solid fluidized beds is developed on the basis of hydrodynamic behavior of these contactors.
Abstract: A procedure for the prediction of wall-bed heat transfer coefficient for bubble columns and gas-solid fluidized beds is developed on the basis of hydrodynamic behavior of these contactors. A comparison between the predicted and experimental values of heat transfer coefficient over a wide range of design and operating variables is presented. An attempt is made to analyze the occurrence of maxima in heat transfer coefficient with respect to gas velocity in the case of fluidized beds. A procedure for the calculation of the optimum superficial gas velocity is outlined.
60 citations
TL;DR: In this article, the upflow ejector with and without swirls was measured and the cocurrent ejector-distributor bubble column as well as gas and liquid phase backmixing in the column.
60 citations
TL;DR: In this paper, a procedure to determine mass transfer parameters for absorption systems is presented, which includes guidelines for the choice of system, the experimental setup and procedure as well as the processing of experimental data.
Abstract: Inaccurate mass transfer measurements may lead to an erroneous design of process equipment, since the accuracy of process modelling strongly depends on the quality of the model parameters. While procedures for measuring model parameters have been standardized for distillation, a standard for absorption has not been established yet. Thus the accuracy to predict the effective interfacial area and the mass transfer coefficients in the gas and liquid phase for several column internals varies significantly and the compatibility of data from different sources is limited. Therefore, a procedure to determine these mass transfer parameters is presented in this paper that includes guidelines for the choice of system, the experimental setup and procedure as well as the processing of experimental data. The procedure has been tested for classic and modern random packing types and results of absorption experiments are shown for a 25 mm Pall-Ring. A comparison of the experimental data with existing data and theoretical calculations from existing mass transfer correlations is presented. This comparison reveals not only discrepancies between the experimental and literature data but also the inconsistency of different sources and thus strongly supports the demand for a standardized procedure to determine mass transfer parameters for absorption systems.
60 citations
TL;DR: In this paper, the authors used 3D steady state Computational Fluid Dynamics with mass transfer to compare four channels with feed spacer configurations (Ladder-type, Triple, Wavy and Submerged).
60 citations