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.
Original language | English |
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Pages (from-to) | 8-16 |
Number of pages | 9 |
Journal | Procedia Engineering |
Volume | 146 |
DOIs | |
State | Published - 2016 |
Event | 8th International Cold Climate HVAC 2015 Conference, CCHVAC 2015 - Dalian, China Duration: 20 Oct 2015 → 23 Oct 2015 |
Bibliographical note
Funding Information:This research was supported by a KETEP grant (No.20132010101910) funded by the Korea Government and a Residential Environment Research Program grant (16RERP-B082204-03), which was funded by the Ministry of Land, Infrastructure, and Transport of the Korean Government.
Publisher Copyright:
© 2016 The Authors. Published by Elsevier Ltd.
Keywords
- annual heat loss and gain
- insulation performance
- Metal-exterior curtain wall
- panel system
- thermal bridges