摘要
为了研究大型油盘火灾的辐射特性及火焰结构,对几种不同尺寸的油盘火灾的外部辐射热进行了实验测量。在大型油盘火灾实验中,火焰的辐射热被来自火焰的大量烟气所包围,辐射热中绝大部分是由火焰底部发散出来的。实验还对火焰的其他一些特性(如排烟量、火焰温度、火焰中的气体流速及气体浓度、燃烧速率等)分别进行了测量。结果发现,火焰燃烧中的大部分是在火焰底部完成的,火焰上部的气流对烟气的散发起到了非常重要的作用。
In order to understand properties of large pool fires and flame structure, external radiation was measured in several size pan fire experiments. In large fires, radiation was blocked by a huge amount of smoke around the flame, and most of the radiation was emitted from flame base. In order to explain this result, other properties, such as smoke emission, flame temperature, gas velocity and gas concentration in the flame, and the burning rate were also measured. Discussion of the radiation and flame structure is presented based on these data. The study found that most combustion was completed in the low part of flame, and gas flow in the radial direction in the upper part of flame played an important role in emitting smoke.
出处
《消防科学与技术》
CAS
北大核心
2009年第1期5-8,共4页
Fire Science and Technology
关键词
油盘
火焰结构
辐射热
pool
flame structure radiation
