基于正交试验法的大空间自然排烟影响因素分析  

Influence factors analysis of natural somke exhaust in large space based on orthogonal test

作　　者：李俊毅[1,2,3] 朱国庆[1,2,3] 

机构地区：[1]中国矿业大学安全工程学院,江苏徐州221116 [2]中国矿业大学煤矿瓦斯与火灾防治教育部重点实验室,江苏徐州221116 [3]中国矿业大学消防工程研究所,江苏徐州221116

出　　处：《消防科学与技术》2015年第7期859-862,共4页Fire Science and Technology

基　　金：江苏省自然科学基金项目(BK20131117);江苏高校优势学科建设工程(PAPD)

摘　　要：为了研究排烟口位置、排烟口面积、补风口面积和火源功率对大空间建筑自然排烟效果的影响,基于正交试验法设计试验方案,并利用方差分析得出各因素对自然排烟效果影响的显著程度。结果表明:在同一建筑空间内,补风口面积和排烟口位置对烟气层高度影响特别显著,火源功率和排烟口面积对烟气层高度影响较小。火源功率对烟气温度影响特别显著,排烟口面积和补风口面积对烟气温度影响较小。自然排烟宜采用顶窗排烟,并应合理增大补风口面积。In order to research the influence of location of smoke exhaust vent,area of smoke exhaust vent and return air and HRR on smoke exhaust effect in large space,tests were designed based on orthoganal test method,the influence degree of factors was obtained by analysis of variance.The results showed that in the same space,the height of smoke could be affected significantly by area of return air and smoke exhaust location,the temperature of smoke could be affected significantly by HRR,but a little affected by area of smoke exhaust vent and return air.and,roof inner shield was proper for natural smoke exhaust and the area of return air should be enlarged properly.

关 键 词：大空间建筑 自然排烟 正交试验 方差分析 

分 类 号：X924.4[环境科学与工程—安全科学] TU834.1[建筑科学—供热、供燃气、通风及空调工程]