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Thermal characteristics of externally venting flames and their effect on the exposed façade surface
- Source :
- Fire Safety Journal. 91:451-460
- Publication Year :
- 2017
- Publisher :
- Elsevier BV, 2017.
-
Abstract
- In a compartment fire, Externally Venting Flames (EVF) may significantly increase the risk of fire spreading to adjacent floors or buildings, especially when combustible insulation materials are installed on the building facade. An increasing number of recent reports suggest that existing fire engineering design methodologies cannot describe with sufficient accuracy the characteristics of EVF under realistic fire load conditions. In this context, a series of fire safety engineering design correlations used to describe the main EVF thermal characteristics, namely EVF centreline temperature and EVF-induced heat flux on the exposed facade surface, are comparatively assessed. Towards this end, measurements obtained in a medium- and a large-scale compartment-facade fire test are employed; aiming to broaden the scope of the validation study, predictions of the investigated correlations are further compared to measurements obtained in 6 large-scale fire tests found in the literature. It is found that the correlation proposed in EN1991-1–2 (Eurocode 1) for the estimation of the EVF centreline temperature is under-predicting the measured values in large-scale fire tests. In addition, it is concluded that estimation of the local flame emissivity should take into account the specific fuel type used in each case.
- Subjects :
- Fire test
Engineering
H121
business.industry
0211 other engineering and technologies
General Physics and Astronomy
020101 civil engineering
Context (language use)
02 engineering and technology
General Chemistry
Structural engineering
0201 civil engineering
Fire protection engineering
Heat flux
021105 building & construction
Heat transfer
Thermal
Emissivity
General Materials Science
Facade
Safety, Risk, Reliability and Quality
business
Subjects
Details
- ISSN :
- 03797112
- Volume :
- 91
- Database :
- OpenAIRE
- Journal :
- Fire Safety Journal
- Accession number :
- edsair.doi.dedup.....ffa2aee36dbfbedc1aebf5843f843160