木块在小尺寸轰燃实验中的点燃及预测模型  

The Ignition and the Forecast Model of Wood Blocks in a Bench-scale Flashover Apparatus

作　　者：季经纬[1] 宋虎[1] 杨立中[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》2003年第7期62-66,共5页Strategic Study of CAE

基　　金：国家重点基础研究专项经费资助项目 ( 2 0 0 1CB40 960 0 );国家自然基金重点资助项目 ( 5 993 614 0 )

摘　　要：利用小尺寸轰燃实验台对松木和杉木的点燃性能进行了研究。该实验台能够提供接近实际火灾的燃烧环境 ,实验具有较好的可重复性。在锥形量热计实验的基础上提出了一种新的材料热辐射引燃判据。采用实验测得的轰燃实验台上层热烟气温度的平均值 。The ignition of both deal and fir blocks were tested with a bench\|scale flashover test apparatus. Tests results showed that the bench\|scale flashover test apparatus could offer a test environment similar to the true fire environment and tests executed with the apparatus had good repeatable property. Based on the cone calorimeter test results, a new ignition criterion of wood was presented in the paper. Ignition time of wood block in the bench\|scale flashover test apparatus were calculated with the tested average temperature of the upper smoke layer and the new ignition criterion. The calculation results showed that the new approach was facile and available for the purpose of forecasting the ignition time of wood blocks in the bench\|scale flashover test apparatus. [

关 键 词：轰燃 木材 点燃 

分 类 号：TU998.12[建筑科学—市政工程]