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

P. Boulet, G. Parent, Z. Acem, T. Rogaume, Talal Fateh, J. Zaida, F. Richard

    Research output: Contribution to journalArticle

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    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.
    LanguageEnglish
    Pages53-60
    JournalFire Safety Journal
    Volume51
    Early online date13 Apr 2012
    DOIs
    Publication statusPublished - 1 Jul 2012

    Fingerprint

    plywood
    Plywood
    Calorimeters
    calorimeters
    pyrolysis
    Cones
    cones
    Pyrolysis
    Wood
    Fires
    Irradiation
    Infrared radiation
    deviation
    Wavelength
    experimentation
    absorbers
    absorptivity
    emitters
    Temperature
    irradiation

    Keywords

    • Absorption
    • Cone calorimeter
    • Emission
    • ISO 5660
    • Pyrolysis
    • Radiative properties

    Cite this

    Boulet, P. ; Parent, G. ; Acem, Z. ; Rogaume, T. ; Fateh, Talal ; Zaida, J. ; Richard, F. / Characterization of the radiative exchanges when using a cone calorimeter for the study of the plywood pyrolysis. 2012 ; Vol. 51. pp. 53-60.
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    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.",
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    Boulet, P, Parent, G, Acem, Z, Rogaume, T, Fateh, T, Zaida, J & Richard, F 2012, 'Characterization of the radiative exchanges when using a cone calorimeter for the study of the plywood pyrolysis', vol. 51, pp. 53-60. https://doi.org/10.1016/j.firesaf.2012.03.003

    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.; Richard, F.

    Vol. 51, 01.07.2012, p. 53-60.

    Research output: Contribution to journalArticle

    TY - JOUR

    T1 - Characterization of the radiative exchanges when using a cone calorimeter for the study of the plywood pyrolysis

    AU - Boulet, P.

    AU - Parent, G.

    AU - Acem, Z.

    AU - Rogaume, T.

    AU - Fateh, Talal

    AU - Zaida, J.

    AU - Richard, F.

    PY - 2012/7/1

    Y1 - 2012/7/1

    N2 - 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.

    AB - 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.

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