前室送风口位置对防烟效果的影响研究  

The experimental study on influence of the location of vestibule outlet on the smoke control effect

作　　者：陈颖[1] 陈汪海涛 李思成[1] 霍昭磐 

机构地区：[1]中国人民武装警察部队学院,河北廊坊065000 [2]合肥市消防支队,安徽合肥230026

出　　处：《消防科学与技术》2017年第3期315-318,共4页Fire Science and Technology

基　　金：国家自然科学基金项目(51278493);武警学院青年教师项目(ZQNJS201531);2016中国消防协会科学技术年会"青年消防学者论坛"交流论文

摘　　要：为研究建筑前室送风口位置对建筑正压送风防烟效果的影响,针对前室机械加压送风的防烟形式,设定3个工况,通过全尺寸实验研究前室送风口与前室门处于正对与垂直两种位置时的门洞风速分布,得到前室送风口位置对前室门气流分布的影响规律。结果表明:送风口位置较低会造成前室门顶部风速较小,底部风速较大的风速分布,不利于阻止烟气的侵入;当送风口与前室门处于正对位置时,门洞靠近送风口一侧的风速较大;当送风口与前室门呈垂直位置时,远离送风口、靠近与门垂直的墙面一侧的风速值较大。In order to investigate the influences of the location of vestibule outlet on the positive pressure ventilation smoke control effect, through full-scale experiments with 3 scenarios, aiming at the mechanical pressurized air supply which is mainly used in vestibules smoke control, the distribution of the wind velocity at vestibule door was founded when the relative position of the outlet and door is opposite or vertical. The discipline a bout the influence of the location of the outlet on air distribulion at vestibule door was also obtained. The results showed that the low position of outlet will cause small wind velocity at tbe top, but larger wind velocity at the bottom, which is not con ducive to prevent the intrusion of smoke. When the outlet is facing right the door of atria, the wind velocity near the outlet is larger. When the outlet is perpendicular to the door of atria. the wind velocity near the wall away from the outlet is larger.

关 键 词：前室 送风口位置 全尺寸实验 风速分布 防排烟 机械加压送风 

分 类 号：X924.4[环境科学与工程—安全科学] TU834.2[建筑科学—供热、供燃气、通风及空调工程]