Hygrothermal propertied of building materials at different temperatures and relative humidities

Yousefi, Youness (author)
British Columbia Institute of Technology School of Construction and Environment (Degree granting institution)

Dissertation/thesis

© Youness Yousefi, 2019. All rights reserved. No part of this work covered by the copyright heron may be reproduced or used in any form or by any means – graphics, electronic, or mechanical including photocopying, taping, or information storage and retrieval systems – without written permission of the author.
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British Columbia Institute of Technology

2019-07

407 pages

This research project investigated and measured a set of hygrothermal characteristics of several building materials commonly used across the North America. This study examined the behavior of building materials under various climate conditions other than what is proposed by the standards. Improving available standard test methods by using state-of-the-art equipment, enabled me to measure thermal conductivity, sorption isotherms, water vapor permeability and water absorption coefficient of tested materials under nine different combinations of temperatures from iv 3°C to 45°C and relative humidities from 50% to 90%. The results clearly present dependency of material properties on varying temperature and relative humidity. For example, thermal conductivity, vapor permeability and water absorption coefficients of all tested materials increased with respect to temperature, while the sorption isotherms of all materials decreased when temperature rose. The obtained results from this research can be utilized in Heat, Air and Moisture (HAM) modeling to improve effective and realistic analysis hygrothermal and energy performance of whole buildings.

Hygrothermoelasticity

electronic

Master of Applied Science