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Sheet material 0.5 cm thick containing 800 kg of dry stock/m³ of original wet stock is to be dried at constant drying condition. The Initial drying rate is 4 kg/hr. m² at the initial moisture content of 33%. The final drying rate is 1 kg/hr. m² at 6% final moisture content. The equilibrium moisture content is negligible. If drying is from the two large surfaces only, and if the drying rate in the falling rate period is proportional to the free moisture content, calculate the total drying time. All moisture contents are on the dry basis.

Sheet material 0.5 cm thick containing 800 kg of dry stock/m³ of original wet stock is to be dried at constant drying condition. The Initial drying rate is 4 kg/hr. m² at the initial moisture content of 33%. The final drying rate is 1 kg/hr. m² at 6% final moisture content. The equilibrium moisture content is negligible. If drying is from the two large surfaces only, and if the drying rate in the falling rate period is proportional to the free moisture content, calculate the total drying time. All moisture contents are on the dry basis.

Introduction to Chemical Engineering Thermodynamics
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
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Sheet material 0.5 cm thick containing 800 kg of dry stock/m³ of original wet stock is to be dried at constant drying condition. The Initial drying rate is 4 kg/hr. m² at the initial moisture content of 33%. The final drying rate is 1 kg/hr. m² at 6% final moisture content. The equilibrium moisture content is negligible. If drying is from the two large surfaces only, and if the drying rate in the falling rate period is proportional to the free moisture content, calculate the total drying time. All moisture contents are on the dry basis.
Transcribed Image Text:Sheet material 0.5 cm thick containing 800 kg of dry stock/m³ of original wet stock is to be dried at constant drying condition. The Initial drying rate is 4 kg/hr. m² at the initial moisture content of 33%. The final drying rate is 1 kg/hr. m² at 6% final moisture content. The equilibrium moisture content is negligible. If drying is from the two large surfaces only, and if the drying rate in the falling rate period is proportional to the free moisture content, calculate the total drying time. All moisture contents are on the dry basis.
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