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Thermal Insulation Performance of Metal-exterior Curtain Wall Panel Systems with Thermal Bridges in Winter

Title
Thermal Insulation Performance of Metal-exterior Curtain Wall Panel Systems with Thermal Bridges in Winter
Authors
Song J.-H.Lim J.-H.Kim Y.-I.Song S.-Y.
Ewha Authors
송승영임재한
SCOPUS Author ID
송승영scopus; 임재한scopusscopus
Issue Date
2016
Journal Title
Procedia Engineering
ISSN
1877-7058JCR Link
Citation
vol. 146, pp. 8 - 16
Keywords
annual heat loss and gaininsulation performanceMetal-exterior curtain wallpanel systemthermal bridges
Publisher
Elsevier Ltd
Indexed
SCOPUS scopus
Abstract
To reduce energy consumption in buildings, it is essential to enhance the thermal insulation performance of building envelopes. For metal-exterior curtain wall panel systems, thermal insulation performance cannot be ensured because of the additional heat loss through thermal bridges, such as joints between panels, metal screws, and brackets. This study examined thermally improved metal-exterior curtain wall panel systems with bracket fixings. The thermal insulation performance of a conventional panel and three alternatives were evaluated by conducting three-dimensional transient heat transfer simulations during winter. The results showed that the total heat loss from the Base, alternative 1 (Alt1), alternative 2 (Alt2), and alternative 3 (Alt3) systems were 120.4, 62.0, 34.2, and 20.3 MJ per unit wall area, respectively. Alt3 reduced the heat loss by 83.2% compared with the Base. Alt3 had a thermally insulated bracket with Azon and a modified aluminum mold with joints between the panels for reducing thermal bridges. © 2016 The Authors. Published by Elsevier Ltd.
DOI
10.1016/j.proeng.2016.06.346
Appears in Collections:
공과대학 > 건축공학전공 > Journal papers
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