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Investigation of thermal breakage and heat transfer in single, insulated and laminated glazing under fire conditions
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Wang, Yu, Wang, Qingsong, Wen, Jennifer X., Sun, Jinhua and Liew, K. M. (2017) Investigation of thermal breakage and heat transfer in single, insulated and laminated glazing under fire conditions. Applied Thermal Engineering, 125 . pp. 662-672. doi:10.1016/j.applthermaleng.2017.07.019 ISSN 1359-4311.
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Official URL: http://dx.doi.org/10.1016/j.applthermaleng.2017.07...
Abstract
To make constructions more artistic, various new kinds of glazing are increasingly employed in building envelopes. However, when subjected to a fire, these glass façades may easily break and fall out, significantly accelerating the development of enclosure fire. Thus, it is necessary to investigate and compare their different fire performance and breakage mechanisms. In this work, a total of ten tests, including single coated, insulated and laminated glazing, were heated by a 500 × 500 mm2 pool fire. Breakage time, glass surface and air temperature, incident heat flux and crack initiation and propagation were obtained. The critical conditions of three different kinds of glazing were determined. It was established that the insulated and laminated glass can survive longer than the single glass. The air gap and fire side glass pane was found to play a key role for the thermal resistance of ambient side pane in the insulated glazing. Although both panes of the laminated glazing broke, it could be held together by the layer of gel, effectively avoiding the formation of a new vent. Numerical simulations were performed to investigate the heat transfer process through the glazing panels and the temperatures in the glazing were predicted well. Suggestions for glass fire resistance design are proposed.
Item Type: | Journal Article | ||||||||
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Subjects: | T Technology > TA Engineering (General). Civil engineering (General) | ||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||||
Library of Congress Subject Headings (LCSH): | Structural analysis (Engineering)., Heat—Transmission, Glass construction., Structural failures -- Investigation., Insulation (Heat) | ||||||||
Journal or Publication Title: | Applied Thermal Engineering | ||||||||
Publisher: | Pergamon | ||||||||
ISSN: | 1359-4311 | ||||||||
Official Date: | October 2017 | ||||||||
Dates: |
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Volume: | 125 | ||||||||
Page Range: | pp. 662-672 | ||||||||
DOI: | 10.1016/j.applthermaleng.2017.07.019 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||
Date of first compliant deposit: | 22 September 2017 | ||||||||
Date of first compliant Open Access: | 6 July 2018 | ||||||||
Funder: | Guo jia zi ran ke xue ji jin wei yuan hui (China) [National Natural Science Foundation of China] (NSFC), Zhongguo ke xue yuan [Chinese Academy of Sciences] (CAS), Research Grants Council (Hong Kong, China) | ||||||||
Grant number: | 51578524, 2013286, 9042221, CityU 11300215 |
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