TY - JOUR
T1 - Thermal Insulation Performance of Metal-exterior Curtain Wall Panel Systems with Thermal Bridges in Winter
AU - Song, Jin Hee
AU - Lim, Jae Han
AU - Kim, Yong In
AU - Song, Seung Yeong
N1 - 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.
PY - 2016
Y1 - 2016
N2 - 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.
AB - 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.
KW - annual heat loss and gain
KW - insulation performance
KW - Metal-exterior curtain wall
KW - panel system
KW - thermal bridges
UR - http://www.scopus.com/inward/record.url?scp=84979585400&partnerID=8YFLogxK
U2 - 10.1016/j.proeng.2016.06.346
DO - 10.1016/j.proeng.2016.06.346
M3 - Conference article
AN - SCOPUS:84979585400
SN - 1877-7058
VL - 146
SP - 8
EP - 16
JO - Procedia Engineering
JF - Procedia Engineering
T2 - 8th International Cold Climate HVAC 2015 Conference, CCHVAC 2015
Y2 - 20 October 2015 through 23 October 2015
ER -
