燃烧物分级方法研究

发布时间：2018-01-31 23:59

本文关键词： 标准燃烧物燃烧物分级水喷淋临界洒水密度热释放速率　出处：《消防科学与技术》2017年10期 　论文类型：期刊论文

【摘要】：利用已研制的火灾试验用标准燃烧物和RDD实验装置,开展不同洒水密度下标准燃烧物燃烧特性测量,提出燃烧物临界洒水密度(CDD)的概念,给出数学表达式并进行试验测量,根据每种标准燃烧物特有的临界洒水密度研究确立燃烧物分级方法。结果表明:介于有效控火和火灾失控间的临界洒水密度可作为采用水喷淋保护的燃烧物火灾危险性分级参数;火灾试验用标准燃烧物货架层数增加50%,其临界洒水密度增大104%~110%;纸杯和塑料杯组合体标准燃烧物单位面积(货架顶部上表面积+货架侧表面积)临界洒水密度分别为0.3~0.5 mm/min和0.9~1.0 mm/min,该参数受燃烧模型结构变化的影响小。
[Abstract]:Based on the developed standard combustion material for fire test and the RDD experimental device, the concept of critical water sprinkling density of combustion matter is put forward by measuring the combustion characteristics of the standard combustion matter with different sprinkler density. The mathematical expression is given and the experimental measurement is carried out. According to the study of critical sprinkler density of each standard combustion substance, the combustion classification method is established. The results show that:. The critical sprinkler density between effective fire control and fire runaway can be used as the fire hazard classification parameter of combustion material with water spray protection. For fire test, the number of standard combustible material shelf layers increased by 50 and the critical sprinkler density increased by 104% and 110% respectively. Standard combustible unit area of paper cup and plastic cup combination (shelf side surface area of shelf top surface area). The critical sprinkler density was 0.3 mm/min and 0.9 mm/min, respectively. This parameter is little affected by the structure change of combustion model.
【作者单位】：公安部天津消防研究所;
【基金】：公安部科研计划项目“新型水系灭火剂应用于灭火系统的技术研究”(2015JSYJB29) 公安部天津消防研究所科研项目(2017SJ-A-46)
【分类号】：X932
【正文快照】： 为建立用于研究的具有代表性的可燃物与现实中千差万别的实际可燃物之间的联系,20世纪70年代FM开始了燃烧物分级方法的研究。FM采用了自行研制的标准燃烧物开展了大量水喷淋实体火灭火试验,通过对比实际燃烧物和标准燃烧物水喷淋保护试验的结果确定燃烧物的等级。但该燃烧物

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