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Title: Review of Moisture Balance Models for Residential Indoor Humidity

Source: Citation: Glass, S.V.; TenWolde, A. Review of moisture balance models for residential indoor humidity. In: Proceedings, 12th Canadian Conference on Building Science and Technology, Vol. 1:231-245; 2009

Author(s)Glass, Samuel V.; Ten Wolde, Anton

Publication Year: 2009  View PDF »

Category: Conference Proceedings
Associated Research Project(s):   FPL-4723-1

Abstract: Moisture balance models for indoor humidity have been developed and used by researchers and practitioners to generate realistic interior humidity conditions for hygrothermal analysis of building envelopes and to analyze humidity levels and moisture production rates. This paper reviews moisture balance models for residential indoor humidity in cold-climates. We provide background on various simplified approaches to handling water vapor exchange (buffering) with hygroscopic materials in contact with indoor air. We discuss the application of models in actual occupied buildings, comparing modeled indoor humidity values with measured values and describing how models have been used to estimate moisture production rates. We show that there is rather large variability in moisture production rates and argue that the combined uncertainty in moisture production and air exchange rates warrants the use of simple models for moisture buffering. Finally, we evaluate the time scale for which moisture buffering is significant, concluding that the data currently support only short-term effects.

Keywords: Dwellings, heating, ventilation, wooden buildings, moisture, buildings, dampness in buildings, humidity, wooden-frame houses, environmental engineering, testing, wood moisture, weathering, airtightness, mathematical models, water vapor, moisture content, moisture control, moisture content of wood in service, durability, review article

File size: 206 kb(s)

Date posted: 06/26/2009

This publication is also viewable on Treesearch:  view
RITS Product ID: 30793
Current FPL Scientist associated with this product
Glass, Samuel V.
Research Physical Scientist

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