扁平大空间机械排烟全尺寸试验研究  

Study on effectiveness of smoke exhaust in large flat space using hot smoke experiment

作　　者：伍卫军[1] 徐亮[2] 陶李华 陈勋 姚嘉杰[4] 

机构地区：[1]浙江省消防总队,浙江杭州310014 [2]金华市消防支队,浙江金华321061 [3]浙江方元安消防技术有限公司,浙江杭州310012 [4]中国科学技术大学火灾科学国家重点实验室,安徽合肥230027

出　　处：《消防科学与技术》2012年第10期1038-1040,共3页Fire Science and Technology

基　　金：公安部消防局研究项目“典型超大型商贸城烟气控制关键技术应用研究”(2009XFCX016)

摘　　要：利用全尺寸热烟试验,研究了机械排烟系统在典型扁平大空间中的排烟有效性。通过改变防烟分区面积、排烟量、排烟口位置和排烟口数量,研究不同工况下烟控方式的有效性。研究发现,排烟距离对排烟效果影响很大,超出一定距离后,烟控效果较差。当防烟分区内有均匀分布两个以上排烟口时,排烟效果明显优于单个排烟口的排烟效果。同时,理论公式算得的排烟量能够有效控制烟气蔓延,我国规范规定的排烟量计算方法相对较为保守。另外对试验中存在的烟气弥散和烟气回填现象进行了探讨和分析。The effectiveness of mechanical smoke exhaust system in typical flat large space by using full size hot smoke experiment was studied.Different smoke partition area,smoke exhaust quantity,smoke vent position and smoke vent quantity have been used in the research to study the effectiveness under different working conditions.This paper has found that smoke distance on smoke effects is relatively large : if the distance is beyond a certain standard,smoke can not be well controlled.When there are two or more smoke well-distributed vent in the smoke partition,smoke effect is obviously superior to that with a single smoke vent.At the same time,smoke exhaust quantity calculated by the theory formula can effectively control smoke spread.Also smoke exhaust volume calculation method in Chinese codes are7relatively conservative.Flue gas dispersion and flue gas backfill phenomenon is also discussed and analyzed.

关 键 词：扁平大空间 机械排烟 全尺寸热烟实验 防烟分区 

分 类 号：X913.4[环境科学与工程—安全科学] TU972.4[建筑科学—建筑设计及理论] TU834.2