Strips of material 10 mm thick are dried under constant drying conditions from 28 to 13 per cent moisture in 25 ks. The equilibrium moisture content is 7 per cent. The relation between E, the ratio of the final free moisture content at time t to the initial free moisture content, and the parameter J is given by: E 1 0.64 0.49 0.38 0.295 0.22 0.14 ၂ 0 0.1 0.2 0.3 0.5 0.6 0.7 It may be noted that J = kt/12, where, k = constant, t = time (ks) 1 = thickness/2 of the sheet of material (mm) a. Based on the given data, plot a graph of E against J b. Determine the time taken to dry 60 mm planks from 22 to 10 per cent moisture under the same conditions assuming no loss from the edges? A O
Strips of material 10 mm thick are dried under constant drying conditions from 28 to 13 per cent moisture in 25 ks. The equilibrium moisture content is 7 per cent. The relation between E, the ratio of the final free moisture content at time t to the initial free moisture content, and the parameter J is given by: E 1 0.64 0.49 0.38 0.295 0.22 0.14 ၂ 0 0.1 0.2 0.3 0.5 0.6 0.7 It may be noted that J = kt/12, where, k = constant, t = time (ks) 1 = thickness/2 of the sheet of material (mm) a. Based on the given data, plot a graph of E against J b. Determine the time taken to dry 60 mm planks from 22 to 10 per cent moisture under the same conditions assuming no loss from the edges? A O
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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Transcribed Image Text:Strips of material 10 mm thick are dried
under constant drying conditions from
28 to 13 per
cent moisture in 25 ks. The equilibrium
moisture content is 7 per cent. The
relation between
E, the ratio of the final free moisture
content at time t to the initial free
moisture content, and
the parameter J is given by:
E
1
0.64
0.49
0.38
0.295
0.22
0.14
၂
0
0.1
0.2
0.3
0.5
0.6
0.7
It may be noted that J = kt/12, where, k =
constant, t = time (ks) 1 = thickness/2 of
the sheet of
material (mm)
a. Based on the given data, plot a graph
of E against J
b. Determine the time taken to dry
60 mm planks from 22 to 10 per cent
moisture under the
same conditions assuming no loss from
the edges?
A
O
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