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    Author(s): Mark A. Dietenberger
    Date: 2011
    Source: Proceedings, 39th annual conference, North American Thermal Analysis Society, August 7-10, 2011, Des Moines, Iowa [electronic resource]. [S.l. : North American Thermal Analysis Society], 2011: [12] p. Online proceedings: http://xcdsystem.com/natas2011/cdrom/search.html
    Publication Series: Paper (invited, offered, keynote)
    PDF: Download Publication  (558.31 KB)

    Description

    Mechanistic pyrolysis kinetics analysis of extractives, holocellulose, and lignin in solid wood over entire heating regime was possible using specialized cone calorimeter test and new mathematical analysis tools. Added hardware components include: modified sample holder for thin specimen with tiny thermocouples, methane ring burner with stainless steel mesh above cone heater, and water vapor sensor in heated gas sampling lines. Specialized numerical deconvolutions were applied to oxygen and water vapor analyzer signals to synchronize with rapid responding CO/CO2 analyzer signals. From this data the mass flow rates of C, H, and O within the wood volatiles as function of time were obtained, which allowed deducing mass flow rate of significant molecules of wood volatiles. Accurate analytical solution of pyrolysis kinetics was obtained for exponentially-rising, spatially-uniform temperature within the specimen as implemented in Excel spreadsheet.

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    Citation

    Dietenberger, Mark A. 2011. Pyrolysis kinetics and combustion of thin wood using advanced cone calorimetry test method. In: Proceedings, 39th annual conference, North American Thermal Analysis Society, August 7-10, 2011, Des Moines, Iowa [electronic resource]. [S.l. : North American Thermal Analysis Society], 2011: [12] p. Online proceedings: http://xcdsystem.com/natas2011/cdrom/search.html

    Keywords

    Fire testing, heat of combustion, flame spread, fire risk assessment, calorimetry, fire prevention, combustion, flammability, thermal properties, pyrolysis, heat transmission, thermal analysis, holocellulose, lignin, mathematical statistics, methane, carbon dioxide, carbon, hydrogen, oxygen, testing methods, cone calorimetry (ASTM E1354), fire hazard, thermal degradation, fire resistance, ignition, kinetics, wood extractives, statistical analysis, water vapor

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