Effect of Ozygen and Ezternal Heat Radiation on Characteristics of Flame Spread Rate over the Surface of Wood Sheets
To investigate the influence of ambient oxygen concentration and external heat radiation on the characteristics of flame spread over surface of charring materials, a set of experiments were conducted, with the whitewood with uniform texture as samples. The 16.72％-31.35％ ambient oxygen concentration and 05kW/m2 external heat radiation were applied, to investigate the sole and co-influence of these two factors, and the rates of flame spread over the surface of horizontal samples in each condition were obtained. Results have shown that under the 16.72％ ambient oxygen concentration, the flame spread was unable to be sustained after ignited. In the tests with sustaining flame spread, the flame spread rates increased with increasing of oxygen concentration and external heat radiation. In tests with low external heat radiation (≤ 1 kW/m2), the influence of change in oxygen concentration was more significant. And the increasing trends of flame spread rate with increasing of oxygen concentration were similar under different external heat radiation (0-3kW/m2).
Whitewood Flame spread ambient ozygen concentration ezternal heat radiation flame spread rate
JI Jie SUN Jinhua WAN Wei ZHANG Ying
State Key Laboratory of Fire Science,University of Science and Technology of Chin,Hefei 230026,China
国际会议
2009 International Symposium on Fire Science and Fire-Protection Engineering(2009火灾科学与消防工程国际学术会议)
北京
英文
115-121
2009-10-17（万方平台首次上网日期，不代表论文的发表时间）