The thermal effects of adding a window to a wood stud wall assembly

Par Conseil national de recherches du Canada

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AuteurRechercher : 1; Rechercher : 1; Rechercher : 1
Affiliation du nom
  1. Conseil national de recherches du Canada. Construction
FormatTexte, Article
Titre du compte-renduNew Horizons in Green Civil Engineering (NHICE-02)
Conférence2nd International Conference on New Horizons in Green Civil Engineering (NHICE-02) - Held Online, August 24-26, 2020, Victoria, B.C.
Description physique4 p.
Sujetwindow walls; thermal bridge; THERM; WINDOW; COSMOL; multiphysics
Résumé
Improving the thermal performance of buildings is an essential element when addressing issues related to the effects of climate change on the building envelope. Minimizing energy usage of and heat losses from buildings are important measures in achieving these associated goals. The thermal performance of a building envelope can highly impact the overall performance and energy efficiency of the building. It has been shown that the thermal resistance (R-value) of a building envelope can be affected by thermal bridging sources. Hence, it is important to accurately determine the R-value of building envelopes with thermal bridging components. In this study the thermal bridging effect of a window on wood stud wall assemblies was investigated both experimentally and numerically. A 2.4 m × 2.4 m wood-stud wall assembly, typical of North American wood-frame construction practice, was fabricated with an opening to accommodate a window. The opening in the wall assemblies was first filled with EPS and thereafter tested in the guarded hot box; following which, the EPS in the wall assembly, was replaced with a window. In this study Numerical simulation packages, THERM and WINDOW, were employed to calculate the thermal resistance of a window. The incremental effect of adding this window to a wood stud wall assembly was then investigated numerically and experimentally. COMSOL Multiphysics was employed to evaluate the effective thermal resistance of the wall and the results were benchmarked against the Guarded Hot Box (GHB) results collected in the NRC facility.
Date de publication
Maison d’éditionUniversity of Victoria
Langueanglais
Publications évaluées par des pairsOui
Numéro du CNRCNRCC-CONST-564123E
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Identificateur de l’enregistrement5f593d1b-cc35-415c-a6dd-dd9328c48812
Enregistrement créé2020-10-20
Enregistrement modifié2020-10-20
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