摘要
针对丙烷和氢气混合气体燃烧的火焰特征与辐射特性开展试验研究。根据不同的混合比进行了10组试验,分析火焰高度、火焰中心线温度、火焰外部辐射通量、火焰内部辐射通量的变化。研究发现,随着混合气体中丙烷气体组分的比例不断下降,混合燃烧时的平均火焰高度逐渐下降。丙烷/氢气的混合比例大于50%时,火焰内部辐射通量随着总热释放速率的增大而显著下降;当丙烷/氢气的混合比例小于50%时,火焰内部辐射通量基本保持一致。
Experimental study on the flame structure and radiation characteristics of propane/hydrogen mixture fire was carried out. The flame height, central flame temperature, outward flame radia- tion and inward flame radiation were analyzed by 10 sets of experiments with different mixing ratio. The results showed that the aver- age height of flame declined with the decline of proportion of pro- pane. The inward flame radiation deelined with the increase of total heat release rate when mixture ratio of propane/hydrogen was big- ger than 50%. The inward flame radiation hardly changed when the mixture ratio of propane/hydrogen was smaller than 50%.
出处
《消防科学与技术》
CAS
北大核心
2017年第9期1190-1193,共4页
Fire Science and Technology
基金
上海市自然科学基金项目(15ZR1408100)
上海市青年科技英才扬帆计划(17YF1402800)
关键词
混合气体
预混燃烧
火焰高度
火焰温度
火焰辐射
gaseous mixture
premixed combustion
flame height
flame temperature
flame radiation
