HFO-1234yf和几种干粉灭火剂协同灭火试验研究  

Experimental study on cooperative fire extinguishing of HFO-1234yf and several dry powder fire extinguishing agents

作　　者：张涵[1] 舒中俊 吴洁[1] 邢志祥[1] Zhang Han;Shu Zhongjun;Wu Jie;Xing Zhixiang(School of Safety Science and Engineering,Changzhou University,Changzhou Jiangsu 213164,China)

机构地区：[1]常州大学安全科学与工程学院,江苏常州213164

出　　处：《消防科学与技术》2025年第4期518-524,共7页Fire Science and Technology

基　　金：中国石油-常州大学创新联合体资助项目(2021DQ06)。

摘　　要：随着《基加利修正案》的实施,以七氟丙烷为代表的具有较高GWP的HFCs气体灭火剂将被限制使用,新型替代灭火剂的开发研究具有现实意义。绿色环保型制冷剂HFO-1234yf作为含氟烯烃类化合物,也属于替代灭火剂的筛选范围。采用杯式燃烧器测定HFO-1234yf熄灭正庚烷火焰的临界灭火体积分数为11.4%,为提高其灭火效能,选用KHCO_(3)、Na HCO_(3)和ABC干粉分别与其复配,开展气固混合灭火研究。结果表明,HFO-1234yf气体和3种粉体之间均表现出不同的协同作用,且分别在粉体质量浓度为40.2、55.1、67.4 g/m^(3)时协同效果最佳,对应的协同因子峰值分别为0.884 8、0.892 6、0.931 0。将合适的干粉灭火剂与HFO-1234yf复配使用,可以降低HFO-1234yf的灭火浓度,提高其灭火效能。With the implementation of the Kigali Amendment,HFCs gas fire extinguishing agents with high GWP,represented by HFC-227ea,will be restricted from use.Therefore,the research on alternatives to such fire extinguishing agents is of practical significance.The green and environmentally friendly refrigerant HFO-1234yf,as a fluorine-containing olefin compound,also belongs to the screening range of alternative fire extinguishing agents.In this paper,the critical extinguishing volume fraction of HFO-1234yf to extinguish the n-heptane flame is 11.4%by using a cup burner.To improve its fire extinguishing efficiency,KHCO_(3),NaHCO_(3) and ABC dry powder are used to carry out the mixed fire extinguishing research of gas and solid,respectively.The results show that there are different synergies between HFO-1234yf gas and the three powders,and the synergies are the best when the powder mass concentration is 40.2,55.1 g/m^(3) and 67.4 g/m^(3),and the corresponding peak synergies are 0.8848,0.8926 and 0.9310,respectively.The combination of suitable dry powder extinguishing agent and HFO-1234yf can reduce the extinguishing concentration of HFO-1234yf and improve its extinguishing efficiency.

关 键 词：HFO-1234YF 杯式燃烧器 复合灭火剂 干粉灭火剂 协同灭火 

分 类 号：X932[环境科学与工程—安全科学] TU892[建筑科学]