Fuel Volatility Effects on Pool Fires in Compartments with Low Ventilation

O. Aljumaiah, G. Andrews, A. Jimenez, N. R. Duhoon, H. Phylaktou
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引用次数: 10

Abstract

Pool fires in low ventilation compartments give rise to ghosting flames and their toxic and particulate emissions were investigated for 400mm square pool fires in a 1.6 m 3 compartment with ventilation of 0.035 kg/m 2 s, air mass flow rate per pool surface area. These conditions produced global compartment equivalence ratios that were rich and this did occur for kerosene and heptane , but diesel and toluene only achieved near stoichiometric conditions. The low ventilation produced low ceiling temperatures of between 380 and 480 o C with the highest temperature for diesel and the lowest for heptane. Particulate mass emissions were highest for kerosene at 6.5 g/kgf and lowest for heptane at 0.9 g/kgf. Soot emissions were lowest for heptane at 0.2 g/kgf and highest for kerosene at 5 g/kgf. These are relatively low soot emissions, due to the low fire temperatures for near stoichiometric combustion. These low temperatures were mainly due to low combustion efficiencies with high CO and HC yields.
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低通风舱室中燃料挥发对池火的影响
在低通风隔间中,池火会产生重隐火焰,研究了在1.6平方米隔间中400mm平方的池火的毒性和颗粒排放,通风为0.035 kg/m 2 s,每池表面积的空气质量流量。这些条件产生了丰富的整体隔室等效比,煤油和庚烷确实出现了这种情况,但柴油和甲苯只达到了接近化学计量的条件。低通风产生的天花板温度较低,在380至480℃之间,柴油温度最高,庚烷温度最低。煤油的微粒质量排放最高,为6.5 g/kgf,庚烷的微粒质量排放最低,为0.9 g/kgf。庚烷的烟尘排放量最低,为0.2 g/kgf,煤油最高,为5 g/kgf。这些是相对较低的烟尘排放,由于低的火温度为近化学计量燃烧。这些低温主要是由于燃烧效率低,CO和HC产率高。
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