Consider the cylindrical porous pellet shown in the figure below. A gas mixture of species A and

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Consider the cylindrical porous pellet shown in the figure below. A gas mixture of species A and B continually flows over the top face of the pellet. The sides and bottom of the pellet are sealed, and so serve as an impermeable barrier. Within the porous layer, species A forms species B by A B, with first order rate equation RA k cA.

a. List at least three relevant assumptions of the mass transfer process, including the likely directions for flux of species A.
b. In the z-direction, what is the differential form of Fick’s Flux Equation?
c. Develop the appropriately simplified General Differential Equation for Mass Transfer, in terms of species A concentration, cA
d. What are the relevant boundary conditions for the process with respect to species A?

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Fundamentals Of Momentum Heat And Mass Transfer

ISBN: 9781119723547

7th Edition

Authors: James Welty, Gregory L. Rorrer, David G. Foster

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