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<p>An experimental investigation was conducted to analyze the behavior of well-ventilated fires under varying ventilation rates and pan diameters within a reduced-scale compartment which represents a common configuration found in cultural heritage rooms (lower outlet connecting a chimney at room corner). In the fire experiments, N-heptane was selected as the fuel. Air renewal rates ranged from 0.6 to 3.8 ACPH for 3 pan diameters of 8, 16, and 24&#xa0;cm. The influences of applied ventilation rates and fire sizes on fire behavior were examined. Results indicate that the maximum gas temperature, mass loss rate (MLR), and combustion product yield increase with ventilation flow rate and pan diameter. In addition, an adapted empirical model was also proposed and validated to predict the maximum temperature rises under ceiling based on the data from our case study. However, for the larger pan diameters of 16 and 24&#xa0;cm, the evolutions of O<sub>2</sub> and MLR exhibit an abnormal trend typical of under-ventilated fires. This could be attributed to the sufficiently large pan diameter combined with a limited fuel quantity of 50&#xa0;g.</p>

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An experimental investigation examining the well-ventilated fire behavior within a scaled-down chamber of the Chateau de Chambord

  • 期刊论文

  • 发表日期：

    2025年6月9日

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  • Ziyuan Chen,
  • Khaled Chetehouna,
  • Brady Manescau,
  • Shehu Abdulkadir Abdulrahman,
  • Maurice Kadoche

摘要

An experimental investigation was conducted to analyze the behavior of well-ventilated fires under varying ventilation rates and pan diameters within a reduced-scale compartment which represents a common configuration found in cultural heritage rooms (lower outlet connecting a chimney at room corner). In the fire experiments, N-heptane was selected as the fuel. Air renewal rates ranged from 0.6 to 3.8 ACPH for 3 pan diameters of 8, 16, and 24 cm. The influences of applied ventilation rates and fire sizes on fire behavior were examined. Results indicate that the maximum gas temperature, mass loss rate (MLR), and combustion product yield increase with ventilation flow rate and pan diameter. In addition, an adapted empirical model was also proposed and validated to predict the maximum temperature rises under ceiling based on the data from our case study. However, for the larger pan diameters of 16 and 24 cm, the evolutions of O2 and MLR exhibit an abnormal trend typical of under-ventilated fires. This could be attributed to the sufficiently large pan diameter combined with a limited fuel quantity of 50 g.