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Characterization of the radiative exchanges when using a cone calorimeter for the study of the plywood pyrolysis

Boulet, P., Parent, G., Acem, Z., Rogaume, T., Fateh, Talal, Zaida, J. and Richard, F. (2012) Characterization of the radiative exchanges when using a cone calorimeter for the study of the plywood pyrolysis. Fire Safety Journal, 51 . pp. 53-60. [Journal article]

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URL: http://dx.doi.org/10.1016/j.firesaf.2012.03.003

DOI: doi:10.1016/j.firesaf.2012.03.003

Abstract

Experimentations have been carried out on the emission of an infrared emitter on the one hand, and the absorption of a sample of wood on the other hand, in order to characterize the radiative exchanges during a study of pyrolysis using a cone calorimeter apparatus (ISO 5660 standard). The deviation from standard assumptions of black emission or black absorption has been analyzed. The emission of the cone calorimeter has been observed to be close to the ideal one of a blackbody, with some heterogeneities in the emission pattern, but obviously similar to a black emission at a temperature up to 1273 K, depending on the electric supply. On the contrary, the plywood absorption is more complex, non-grey, with important deviations from the behavior of a black absorber in some wavelengths. Average properties have been computed using Plancks means, still indicating a strong average absorptivity for the present samples of studied plywood, but ranging between 0.74 and 0.95, depending on time and irradiation source. Present observations confirm that such a non-grey absorption of the samples may result in some discrepancies when studying the pyrolysis with various emission sources like the one of Fire Propagation Apparatus or the present cone calorimeter, which could have some consequences in the interpretation of the pyrolysis process.

Item Type:Journal article
Keywords:Absorption; Cone calorimeter; Emission; ISO 5660; Pyrolysis; Radiative properties
Faculties and Schools:Faculty of Art, Design and the Built Environment
Faculty of Art, Design and the Built Environment > School of the Built Environment
Research Institutes and Groups:Built Environment Research Institute
Built Environment Research Institute > Fire Safety and Engineering Research and Technology Centre (FireSERT)
ID Code:36258
Deposited By: Dr Talal Fateh
Deposited On:10 Nov 2016 10:50
Last Modified:10 Nov 2016 10:50

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