Thermal-balanced integral model for pyrolysis and ignition of wood

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• 作者：Dekui Shen (1)
  Rui Xiao (1)
  Mengxiang Fang (2)
  Wanki Chow (3)
  
• 关键词：Thermal ; balanced Integral Model ; Ignition ; Critical Heat Flux ; Moisture Content
• 刊名：Korean Journal of Chemical Engineering
• 出版年：2013
• 出版时间：January 2013
• 年：2013
• 卷：30
• 期：1
• 页码：228-234
• 全文大小：349KB
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• 作者单位：Dekui Shen (1)
  Rui Xiao (1)
  Mengxiang Fang (2)
  Wanki Chow (3)
  
  1. Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing, 210096, China
  2. State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou, 310027, China
  3. Department of Building Services Engineering, The Hong Kong Polytechnic University, Hong Kong, China
  
• ISSN：1975-7220

文摘

The pyrolysis and ignition of wood is of great importance to understand the initial stage of combustion, helping control the occurrence and spread of unwanted building and forestry fires. The development of a thermal-balanced model is introduced for examining the analytical relationship between the ignition time and external heat flux. The critical heat flux, one of the important fire-retardant characteristics of combustible solid, is determined from a correlation study between the ignition time and external heat flux. One of the thermal-balanced integral models, considering the effect of surface heat losses, average absorptivity and moisture content, is employed to give the prediction of surface temperature rise, ignition time and ignition temperature of the Aspen. The results show that the model readily and satisfactorily predicts ignition temperature and ignition time of wood with different moisture contents.