Moisture and temperature measurement of paper in the thickness direction

Research output: Contribution to journalArticleScientificpeer-review

3 Citations (Scopus)

Abstract

In this work the z-directional moisture and temperature profile of fine paper was studied during drying. The goal of this research was to determine moisture gradients in thickness direction during drying. This information is needed to improve existing drying models as well as to help deepen the understanding of the drying phenomena and its effects on paper structure. The gradient information can be directly used in the drying models and will assist in making more accurate estimations of the capacity and quality effects of drying on paper. For this study a new method for measuring the z-directional moisture profile of paper was developed. The results show that during paper drying there exist significant gradients in z-directional moisture with profiles showing differences in moisture content of up to 25- 35% across the thickness of the sheet, depending on the drying conditions. Similar magnitude moisture content differentials are observed in both measurements and numerical simulations.
Original languageEnglish
Pages (from-to)308-313
Number of pages6
JournalAppita Journal
Volume62
Issue number4
Publication statusPublished - 2009
MoE publication typeA1 Journal article-refereed

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Temperature measurement
Drying
Moisture
Computer simulation

Keywords

  • Drying
  • Moisture measurement
  • Moisture profile
  • Paper

Cite this

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title = "Moisture and temperature measurement of paper in the thickness direction",
abstract = "In this work the z-directional moisture and temperature profile of fine paper was studied during drying. The goal of this research was to determine moisture gradients in thickness direction during drying. This information is needed to improve existing drying models as well as to help deepen the understanding of the drying phenomena and its effects on paper structure. The gradient information can be directly used in the drying models and will assist in making more accurate estimations of the capacity and quality effects of drying on paper. For this study a new method for measuring the z-directional moisture profile of paper was developed. The results show that during paper drying there exist significant gradients in z-directional moisture with profiles showing differences in moisture content of up to 25- 35{\%} across the thickness of the sheet, depending on the drying conditions. Similar magnitude moisture content differentials are observed in both measurements and numerical simulations.",
keywords = "Drying, Moisture measurement, Moisture profile, Paper",
author = "Ker{\"a}nen, {Janne T.} and Janne Paaso and Oleg Timofeev and Harri Kiiskinen",
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journal = "Appita Journal",
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}

Moisture and temperature measurement of paper in the thickness direction. / Keränen, Janne T.; Paaso, Janne; Timofeev, Oleg; Kiiskinen, Harri.

In: Appita Journal, Vol. 62, No. 4, 2009, p. 308-313.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Moisture and temperature measurement of paper in the thickness direction

AU - Keränen, Janne T.

AU - Paaso, Janne

AU - Timofeev, Oleg

AU - Kiiskinen, Harri

PY - 2009

Y1 - 2009

N2 - In this work the z-directional moisture and temperature profile of fine paper was studied during drying. The goal of this research was to determine moisture gradients in thickness direction during drying. This information is needed to improve existing drying models as well as to help deepen the understanding of the drying phenomena and its effects on paper structure. The gradient information can be directly used in the drying models and will assist in making more accurate estimations of the capacity and quality effects of drying on paper. For this study a new method for measuring the z-directional moisture profile of paper was developed. The results show that during paper drying there exist significant gradients in z-directional moisture with profiles showing differences in moisture content of up to 25- 35% across the thickness of the sheet, depending on the drying conditions. Similar magnitude moisture content differentials are observed in both measurements and numerical simulations.

AB - In this work the z-directional moisture and temperature profile of fine paper was studied during drying. The goal of this research was to determine moisture gradients in thickness direction during drying. This information is needed to improve existing drying models as well as to help deepen the understanding of the drying phenomena and its effects on paper structure. The gradient information can be directly used in the drying models and will assist in making more accurate estimations of the capacity and quality effects of drying on paper. For this study a new method for measuring the z-directional moisture profile of paper was developed. The results show that during paper drying there exist significant gradients in z-directional moisture with profiles showing differences in moisture content of up to 25- 35% across the thickness of the sheet, depending on the drying conditions. Similar magnitude moisture content differentials are observed in both measurements and numerical simulations.

KW - Drying

KW - Moisture measurement

KW - Moisture profile

KW - Paper

M3 - Article

VL - 62

SP - 308

EP - 313

JO - Appita Journal

JF - Appita Journal

SN - 1038-6807

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