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Title: Experimental study of carbon monoxide for woods under spontaneous ignition condition
Authors: Shi, L.
Lin Chew, M.Y. 
Keywords: Autoignition
Carbon monoxide
Cone calorimeter
Moisture content
Issue Date: Dec-2012
Citation: Shi, L., Lin Chew, M.Y. (2012-12). Experimental study of carbon monoxide for woods under spontaneous ignition condition. Fuel 102 : 709-715. ScholarBank@NUS Repository.
Abstract: Toxic gases are significant in fire risk evaluation. Previous studies have focused on their characteristics by piloted ignition. Spontaneous ignition is a complex phenomenon that combustible materials are ignited by internal heating, without the spark plug. Comparing with piloted ignition, process of spontaneous ignition is much closer to the development of real fire. Therefore, carbon monoxide (CO) of six species of wood samples under external heat flux by spontaneous ignition in a cone calorimeter was investigated. Results showed that influence of thickness to peak CO release rate can be ignored, but time to peak is postponed with a higher thickness. Peak CO release rate decreases with a higher external heat flux, but the decrease is not obvious when heat flux increases from 50 to 75 kW/m 2. The flame also has influences to the CO release rate. A sharp decrease of CO release rate happens shortly after ignition and a second peak is near the end of the experiment. Moisture reduces CO release rate and postpones time to peak CO release rate. An empirical model of CO yield of wood samples under different external heat flux and moisture content by spontaneous ignition was developed. This empirical model can be used not only for fire risk evaluation, but also for modeling input and validation. © 2012 Elsevier Ltd. All rights reserved.
Source Title: Fuel
ISSN: 00162361
DOI: 10.1016/j.fuel.2012.06.053
Appears in Collections:Staff Publications

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