火灾中燃料失重速率与烟气向远距离处迁移关系的实验研究  

Experimental Study on Relationship Between Mass Loss Rate and Smoke Transportation to the Distant Location in Fires

作　　者：冯文兴[1] 杨立中[1] 方廷勇[1] 黄锐[1] 范维澄[1] 

机构地区：[1]中国科学技术大学火灾科学国家重点实验室,合肥230026

出　　处：《中国工程科学》2005年第1期81-85,共5页Strategic Study of CAE

基　　金：国家自然科学基金重点资助项目 (5 0 3 2 3 0 0 5 );国家重点基础研究专项经费资助项目 (2 0 0 1CB40 960 3 )

摘　　要：通过不同燃料在模拟房间—走廊结构实验装置中的燃烧实验 ,较系统地揭示了不同材料燃烧时失重速率变化与远距离处烟气迁移速度和CO浓度的关系。实验得到了不同燃料燃烧时的失重速率曲线。研究发现 ,多数燃料的烟气传播速度与失重速率呈线性变化的关系 ,油料和布料的烟气传播速度对质量失重速率的变化非常敏感 ;某些燃料燃烧产生有毒成分的峰值迁移到远距离处需要较长的时间。The various materials as fuel are burnt in an experimental device of Room-Corridor structure, the mass loss rate of which, and the relationship of the mass loss rate with the smoke transportation velocity and CO concentration at a distant location are studied in detail in this paper. It describes the characteristics of mass loss rate of various materials and indicates that the smoke transportation velocity is a linear function of mass loss rate,and is sensitive to the variation of the mass loss rate. It takes a relatively long time for the peak of the toxic species concentration to transport to the distant location.

关 键 词：火灾 失重速率 远距离处 迁移速度 烟气毒性 

分 类 号：TU998.12[建筑科学—市政工程]