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

Tomaž Hozjan, Goran Turk, Stanislav Srpcic, 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 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. Numerical results for timber specimen exposed to combined daily and annually cyclic
variation of outside humidity are presented.
Original languageEnglish
Title of host publicationProceedings of World Conference on Timber Engineering 2012
Publication date2012
Pages41-42
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

  • Coupled moisture transport
  • Sorption hysteresis
  • Varying natural humidity conditions

Cite this

Hozjan, T., Turk, G., Srpcic, S., & Svensson, S. (2012). The effect of changing ambient humidity on moisture condition in timber elements. In Proceedings of World Conference on Timber Engineering 2012 (pp. 41-42)