摘要
在风洞内进行水幕阻挡二氧化碳气体扩散的实验,研究水幕阻挡重气云扩散的有效性。测点设置在水幕下风向,分有、无水幕两种情况测量二氧化碳体积分数。风速0.1m/s,水压0.4MPa,二氧化碳释放速率1.5L/min。结果表明:未开启水幕时,下风向2.5m处的二氧化碳体积分数最大值为1.55578×10-3;开启水幕后,下风向2.5m处的二氧化碳体积分数最大值为1.20581×10-3。水幕能降低下风向重气云的体积分数,为人员的安全疏散赢得时间。
Experiments of the water spray curtain diluting carbon dioxide dispersion were done in wind tunnel to research the effectiveness of the water spray curtain diluting heavy gas dispersion. The test points were set on the leeward of the water spray curtain to test the volume fraction of carbon dioxide whether or not under the water spray curtain. The results showed that the ultimate carbon dioxide volume fraction reaches to 1. 555 78× 10^-3 2.5 m away on the leeward without the water spray curtain. And after installation of the water spray curtain, the ultimate carbon dioxide volume fraction reaches to 1. 205 81× 10^-3 2. 5 m away on the leeward. The water spray curtain can reduce volume fraction of the heavy gas cloud and increase the evacua＋tion time.
出处
《消防科学与技术》
CAS
北大核心
2010年第2期96-98,共3页
Fire Science and Technology
基金
国家"十一五"科技支撑计划重点资助项目(2006BAK01B03-3)
江苏省高校自然科学研究重大项目(09KJA620001)
江苏省城市与工业安全重点实验室开放课题基金资助(2008UIS005)
江苏省"青蓝工程"优秀青年骨干教师资助计划资助
关键词
水幕
重气云扩散
泄漏事故
疏散
water spray curtain
heavy gas dispersion
leakage accident
evacuation
