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Computing Isothermal and Nonisothermal Effectiveness Factors
Author

Housam Binous
Organization: KFUPM
Department: Chemical Engineering
URL: http://sites.google.com/site/homepageofdrhousambinous/
Revision date

2004-05-03
Description

The notebook computes isothermal and nonisothermal effectiveness factors.

Expressions of isothermal effectiveness factor for porous spheres, slabs and cylinders are derived in the notebook IsothermalEffectivenessFactor.nb. These effectiveness factors versus the Thiele modulus are plotted. Plots of the concentration profiles versus position in the catalyst particle are also given.

The nonisothermal effectiveness factor is computed in the notebook NonIsothermalEffectivenessFactor.nb. Temperature and concentration profiles are plotted. For epsilon=30 and beta=0.2, we find a nonisothermal effectiveness factor equal to 5.81 in agreement with the results of Cutlip and Shacham (Problem Solving in Chemical Engineering with Numerical Methods, p. 301, Prentice Hall, 1999).
Subjects

*Engineering > Chemical Engineering
*Science > Chemistry
Keywords

Mass transfer, Catalysts and catalysis, Isothermal and nonisothermal effectiveness factors, Chemical reaction engineering, chemical reaction with diffusion and heat transfer, split boundary conditions, shooting method
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IsothermalEffectivenessFactor.nb (205.8 KB) - Mathematica Notebook [for Mathematica 5.0]
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NonIsothermalEffectivenessFactor.nb (37.2 KB) - Mathematica Notebook [for Mathematica 5.0]