八氟环丁烷与典型灭火气体的协同灭火性能研究

Study on the synergistic fire extinguishing performance of octafluorocyclobutane and typical fire extinguishing gases

通过燃烧杯试验测得八氟环丁烷与N2、HFC-125、HFC-227ea混合物的火焰高度、火焰温度及火焰形态等数据,探究了八氟环丁烷与N2、HFC-125、HFC-227ea的协同作用及配比关系。结果发现,八氟环丁烷与N2和HFC-125表现出负协同作用,与HFC-227ea表现出正协同作用。当八氟环丁烷流量与HFC-227ea设置流量比为13:5时,表现出最佳正协同作用,灭火体积分数为7.02%,低于八氟环丁烷和HFC-227ea的最低灭火体积分数。

Based on the flame height,flame temperature and flame morphology data of octafluorocyclobutane with N2,HFC-125 and HFC-227ea mixtures obtained from the combustion cup experiment,the synergistic effects and their proportional relation⁃ships were investigated.The results showed that octafluorocy⁃clobutane showed negative synergy with N2 and HFC-125,and positive synergy with HFC-227ea.The best positive synergy was shown when the flow rate of octafluorocyclobutane was set at 13:5 with HFC-227ea,and the extinguishing volume fraaction was 7.02%,which was lower than the minimum extinguishing vol⁃ume fraction of octafluorocyclobutane and HFC-227ea.