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Experimental study of the moisture distribution inside a pulp sheet using MRI. Part II: Drying experiments

Bernada, P; Stenström, Stig LU and Mansson, S (1998) In Journal of Pulp and Paper Science 24(12). p.380-387
Abstract
A spin-echo MRI sequence has been employed to measure moisture profiles during the drying of industrial never-dried pulp samples and was able to detect moisture even at very low:moisture content (6%). For the first time, moisture profiles have been measured for pulp samples approximately 2.5 mm thick with a spatial resolution of 0.15 mm under quite severe drying temperatures (up to 87 degrees C). The results highlight strong moisture gradients near the sample surfaces and no classical constant mass flux period, which leads to the conclusion that the evaporation at the surface is never fully compensated by the internal capillary flow during our drying experiments.
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
drying, moisture control, magnetic resonance, image analysis
in
Journal of Pulp and Paper Science
volume
24
issue
12
pages
380 - 387
publisher
TAPPI
external identifiers
  • wos:000077877600002
  • scopus:0000353998
ISSN
0826-6220
language
English
LU publication?
yes
id
54cd835c-db62-4f64-8665-6e534ab97b9c (old id 3914011)
date added to LUP
2013-07-01 12:19:49
date last changed
2017-01-01 06:38:26
@article{54cd835c-db62-4f64-8665-6e534ab97b9c,
  abstract     = {A spin-echo MRI sequence has been employed to measure moisture profiles during the drying of industrial never-dried pulp samples and was able to detect moisture even at very low:moisture content (6%). For the first time, moisture profiles have been measured for pulp samples approximately 2.5 mm thick with a spatial resolution of 0.15 mm under quite severe drying temperatures (up to 87 degrees C). The results highlight strong moisture gradients near the sample surfaces and no classical constant mass flux period, which leads to the conclusion that the evaporation at the surface is never fully compensated by the internal capillary flow during our drying experiments.},
  author       = {Bernada, P and Stenström, Stig and Mansson, S},
  issn         = {0826-6220},
  keyword      = {drying,moisture control,magnetic resonance,image analysis},
  language     = {eng},
  number       = {12},
  pages        = {380--387},
  publisher    = {TAPPI},
  series       = {Journal of Pulp and Paper Science},
  title        = {Experimental study of the moisture distribution inside a pulp sheet using MRI. Part II: Drying experiments},
  volume       = {24},
  year         = {1998},
}