TF5池火平均质量损失速率简化模型及其高原环境下的适用性研究  

A Simplified model of TF5 pool fire average mass burning rate and applicability under high altitude condition

作　　者：涂然[1] 于春雨[1] 肖霞[1] 方俊[1] 王进军[1] 张永明[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,安徽合肥230026

出　　处：《火灾科学》2009年第2期73-79,共7页Fire Safety Science

基　　金：国家"十一五"科技支撑计划资助项目(2006BAK06B07);国家自然科学基金资助项目(50706049)

摘　　要：通过池火在常压环境下燃烧时的质量损失机理分析,对火灾探测中欧洲标准试验火TF5(正庚烷池火)归纳推导出以辐射热反馈为主导的质量损失速率简化模型,并推广到拉萨高原低压环境。该模型建立了TF5池火平均质量损失速率与火焰温度四次方的正比关系,通过对火焰温度的测量,确定燃料液面所受的辐射热反馈功率,从而推算出燃料的平均质量损失速率。同时结合合肥及拉萨两地的TF5标准火实验,对模型进行了验证,实验结果表简化模型能够反映出不同气压下TF5池火燃烧的主要过程。The mechanism of pool fire mass loss rate was introduced to develop a simplified model with dominance of radiation heat feed-back for Euro standard test fire TF5 fire. A direct proportion relationship between average mass loss rate and fourth power of flame temperature was presented through the simplified modeling, According to flame temperature measured, the average mass loss rate could be calculated through this simplified model, and the modeling was proved reasonable by the results of TF5 tests in standard combustion rooms of Hefei and Lhasa respectively.

关 键 词：TF5正庚烷池火 高原环境 质量损失速率 辐射反馈 简化模型 

分 类 号：X932[环境科学与工程—安全科学]