Mass transfer correlations for

TABLE 5-21 Mass Transfer Correlations for a Single Flat Plate or Disk—Transfer to or from Plate to Fluid... 

TABLE 5-22 Mass Transfer Correlations for Falling Films with a Free between Gas and Liquid... 

TABLE 5-23 Mass-Transfer Correlations for Flow in Pipes and Duets—Transfer is from Wall to Fluid... 

TABLE 5-24 Mass Transfer Correlations for Flow Past Submerged Objects... 

TABLE 5-25 Mass-Transfer Correlations for Drops and Bubbles... 

TABLE 5-26 Mass-Transfer Correlations for Particles, Drops, and Bubbles in Agitated Systems... 

TABLE 5-27 Mass Transfer Correlations for Fixed and Fluidized Beds... 

TABLE 5-28 Mass Transfer Correlations for Packed Two-Phase Contactors—Absorption, Distillation, Cooling Towers, and Extractors (Packing Is Inert)... 

Table 13.1. Constants in mass transfer correlation for various fermenter size...

Bubble columns, 15 698-703, 726 estimating shear rates for, 15 689 gas-liquid mass transfer correlations for, 15 70 l-702t... 

Here we review some of the correlations of convective mass transfer. We will find that many reactors are controlled by mass transfer processes so this topic is essential in describing many chemical reactors. This discussion will necessarily be very brief and qualitative, and we win summarize material that most students have encountered in previous courses in mass transfer. Our goal is to write down some of the simple correlations so we can work examples. The assumptions in and validity of particular expressions should of course be checked if one is interested in serious estimations for particular reactor problems. We will only consider here the mass transfer correlations for gases because for liquids the correlations are more comphcated and cannot be easily generalized. 

Hanley, B., Chen, C.-C., New Mass-Transfer Correlations for Packed Towers, AIChE J. (2011) doi 10.1002/aic.l2574. 

Choose the mass transfer correlation for kLa (i.e., mass transfer coefficient of the air bubble). 

Chrysikopoulos and Kim [70] developed time invariant, local mass transfer correlations for NAPL pool dissolution in saturated media based on numerically determined local mass transfer coefficients evaluated for interstitial fluid velocities of 0.1,0.5,0.7,0.85, and 1.0 m/day. It should be noted that solubility concentrations may occur at a NAPL-water interface when interstitial fluid velocities are less than 1.0 m/day [8]. Over 200 different rectangular pools with dimensions xx y in the range from 0.2 mx0.2 m to 10.0 mxlO.O m and approximately the same number of elliptic/circular pools with semiaxes axb in the range 0.1 mxO.l m to 5.0 mx5.0 m were examined. 

Yi, y2, and y3 are empirical coefficients that were determined by fitting the nonlinear power law correlation Eq. (91) to 484 average Sherwood numbers computed for 121 different pool dimensions and four different sets of hydro-dynamic conditions. The resulting time invariant, average mass transfer correlation for elliptic pools is given by... 

Kim T-J, Chrysikopoulos CV (1999) Mass transfer correlations for nonaqueous phase liquid pool dissolution in saturated porous media. Water Resour Res 35 449-459... 

Gas-Liquid Mass Transfer Correlations for Conventional Mechanically Agitated... 

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