A Method to Determine the Moisture Buffering Effect of Structures During Diurnal Cycles of Indoor Air Moisture Loads

Tuomo Ojanen, Mikael Salonvaara

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    Abstract

    Hygroscopic materials and structures may have a significant effect on the relative humidity level and also on the comfort of the indoor air. This moisture buffering effect depends on the moisture loads, air change rate, outdoor air conditions and the moisture transfer between structures and the indoor air. A method to experimentally determine the moisture buffering effect of structures is presented and studied. The method is based on diurnal cycles with two relative humidity levels: upper level corresponding to occupation period and lower level corresponding to unoccupied period. The transient moisture transfer between the studied building component and the air is measured by weighing and the representative characteristics for the instantaneous and overall moisture buffering effect can be solved. The results show how much hygroscopic materials can absorb moisture from indoor air during moisture load periods and transfer it back to the indoor air during low humidity periods.
    Original languageEnglish
    Title of host publicationResearch in Building Physics
    Subtitle of host publicationProceedings of the 2nd International Conference on Building Physics
    PublisherBalkema
    Pages353-362
    ISBN (Print)90-5809-565-7
    Publication statusPublished - 2003
    MoE publication typeA4 Article in a conference publication
    Event2nd International Conference on Building Physics, IBPC 2003 - Leuven, Belgium
    Duration: 14 Sep 200318 Sep 2003
    Conference number: 2
    http://www.gbv.de/dms/tib-ub-hannover/368713873.pdf (Proceedings Table of Contents)

    Conference

    Conference2nd International Conference on Building Physics, IBPC 2003
    Abbreviated titleIBPC
    CountryBelgium
    CityLeuven
    Period14/09/0318/09/03
    Internet address

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  • Cite this

    Ojanen, T., & Salonvaara, M. (2003). A Method to Determine the Moisture Buffering Effect of Structures During Diurnal Cycles of Indoor Air Moisture Loads. In Research in Building Physics : Proceedings of the 2nd International Conference on Building Physics (pp. 353-362). Balkema.