The effect of changing ambient humidity on moisture condition in timber elements

Tomaẑ Hozjan, Goran Turk, Stanislav Srpĉiĉ, Staffan Svensson

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Abstract

This paper deals with the effect of the changing ambient humidity on moisture conditions in timber elements. The naturally varying humidity is possible to model as a relative combination of different harmonic cycles, with different periods and amplitudes. For the determination of the moisture field a fully coupled transport model including a model for the influential sorption hysteresis of wood is used. The coupled model accounts for both vapor transport in pores and bound water transport in wood tissue. Moisture state history influences relationship between moisture state of wood and air humidity, it must therefore be taken into account. In order to include history dependency, a hysteresis model is used here. Results from numerical calculations for timber specimen exposed to combined daily and annually cyclic variation of outside humidity are presented. Copyright © (2012) by WCTE 2012 Committee.
Original languageEnglish
Title of host publicationWorld Conference on Timber Engineering 2012, WCTE 2012
Volume5
PublisherWCTE 2012 Committee
Publication date2012
Pages316-320
ISBN (Print)9781622763054
Publication statusPublished - 2012
Event12th World Conference on Timber engineering - Auckland, New Zealand
Duration: 15 Jul 201219 Jul 2012
Conference number: 12
http://www.conference.co.nz/wcte2012

Conference

Conference12th World Conference on Timber engineering
Number12
CountryNew Zealand
CityAuckland
Period15/07/201219/07/2012
Internet address

Keywords

  • Hysteresis
  • Moisture
  • Sorption
  • Timber
  • Tissue
  • Water vapor
  • Moisture determination

Cite this

Hozjan, T., Turk, G., Srpĉiĉ, S., & Svensson, S. (2012). The effect of changing ambient humidity on moisture condition in timber elements. In World Conference on Timber Engineering 2012, WCTE 2012 (Vol. 5, pp. 316-320). WCTE 2012 Committee.