含水木材热解和着火试验研究  

Experimental study on pyrolysis and ignition of wet wood

作　　者：宋长忠[1] 荀华[1] 方梦祥[2] 

机构地区：[1]内蒙古工业大学电力学院,内蒙古呼和浩特010080 [2]浙江大学热能工程研究所,浙江杭州310027

出　　处：《能源工程》2010年第4期5-8,13,共5页Energy Engineering

基　　金：内蒙古高等学校科学技术研究项目（NJZY07062）

摘　　要：在自行研制的火灾可燃物热解和着火早期特性试验台上,针对建筑装潢中常用的木材进行了热解和着火特性试验,试验的辐射热流选择20～70 kW/m2,试验结果表明,水分对木材的热解和着火特性影响很大,相同辐射热流下,随着含水率的增加,木材的着火时间延长;辐射热流强度对木材的热解和着火也有很大影响,随着外加辐射热流的增加,木材着火时间逐渐缩短。Experiments on pyrolysis and ignition of wet woods,widely used in the buildings,were carried out on the apparatus for investigating pyrolysis and ignition of combustible materials.Slab-shaped samples of wood（the area is 100 mm×100 mm and 15 mm thick） were subjected to different heat fluxes ranging from 20 kW/m2 to 70 kW/m2.Experimental results indicated that moisture content had strongly effect on pyrolysis and ignition of wood;The increasing moisture content increased the time for spontaneous ignition at the given intensity of radiation.The increasing intensity heat flux decreased the time to ignition.

关 键 词：辐射热流 含水率 木材 热解与着火 

分 类 号：TK16[动力工程及工程热物理—热能工程]