A wet cake of solids has a thickness of 0.8 cm is dried by blowing air with a moisture content of 5 wt% across the top surface. The moisture content of the wet cake is measured as 50 wt% and the aim is to reduce the water content to 12 wt%. The diffusion coefficient of water in the cake has been estimated as 7x10 cm? s*. You have been asked about how much time the process would require. Check to see if your long drying assumption is correct.

Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
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(3) A wet cake of solids has a thickness of 0.8 cm is dried by blowing air with a moisture
content of 5 wt% across the top surface. The moisture content of the wet cake is
measured as 50 wt% and the aim is to reduce the water content to 12 wt%. The
diffusion coefficient of water in the cake has been estimated as 7x10° cm? s. You have
been asked about how much time the process would require. Check to see if your long
drying assumption is correct.
Transcribed Image Text:(3) A wet cake of solids has a thickness of 0.8 cm is dried by blowing air with a moisture content of 5 wt% across the top surface. The moisture content of the wet cake is measured as 50 wt% and the aim is to reduce the water content to 12 wt%. The diffusion coefficient of water in the cake has been estimated as 7x10° cm? s. You have been asked about how much time the process would require. Check to see if your long drying assumption is correct.
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