Activation Energy of Teak and Oak Wood Spontaneous Ignition

Abstract:

This article deals with evaluation of the spontaneous-ignition activation energy of the Teak wood (Tectona grandis L.f.) and the Oak wood (Quercus robur L.). Spontaneous-ignition activation energy was calculated from dependence of ignition time to inverse value of thermodynamic temperature. This dependence was measured in the hot-air (Setchkin) furnace according to ISO 871:2006 standard by modification of the test procedure. The modifications of test procedure lay in measurement of the time to ignition of sample loaded by various temperatures (at spontaneous ignition temperature and at temperatures above this value). The mass of investigated samples was (3 ± 0.05) g and its moisture contents was 0 wt %. The dimensions of sample was (20 x 20) mm, the third dimension was adjust to achieve required mass of sample. The activation energy of spontaneous-ignition for Teak wood was 78.23 kJ.mol^-1 and for Oak wood was 59.24 kJ.mol^-1. The spontaneous-ignition temperature for Teak wood was 460 °C and for Oak wood was 450 °C. Thus despite slight difference between spontaneous-ignition temperatures of investigated materials the difference between activation energy of spontaneous-ignition is significant.

• Periodical: Advanced Materials Research (Volume 1001)
• Pages: 262-266
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1001.262
• Online since: August 2014
• Authors: Jozef Martinka*, Tomáš Chrebet
• Keywords: Activation Energy, Fire Dynamics, Fire Investigation, Fire Risk Assessment, Oak Wood, Spontaneous Ignition, Teak Wood

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