通风对受限空间燃油热释放率的影响
Influence of ventilation on fuel heat release rate in confined space
摘要：
在全尺寸热释放率实验台的基础上，搭建了不同通风形式下的油池火燃烧实验台，研究了在受限空间中风速、油盘面积、风口与油盘距离、风口朝向角度及风口直径等对乙醇燃烧过程中热释放率的影响。结果显示：在第1、第2阶段中，热释放率随风速的增大而增大，随风口朝向角度与45°的差值逐渐增大而减小，随风口直径增大而减小；热释放率峰值随油盘面积的增大而增大，随风口与油盘距离的增大而减小。
Abstract：
Establishes a pool fire experimental platform with different ventilation modes based on the full-size heat release rate experimental table. Studies the influences of the air velocity, oil pan area, distance between air outlet and oil pan, orientation angle and diameter of air outlet on the heat release rate of ethanol fuel during combustion in the confined space. The results show that in the first and the second stages, the heat release rate increases with the increase of wind speed, while it decreases with the increase of the difference between the orientation angle of air outlet and 45° and with the increase of the air outlet diameter. The peak of heat release rate increases with the increase of the oil pan area, and decreases with the increase of the distance between air outlet and oil pan.
Keywords:heat release rate, oil pool fire, confined space, ventilation, peak arrival time