摘要
本文介绍了一种水平垂直相结合的呼吸区对撞送风隧道火灾逃生系统(HVES),它可以用来创造一个干净、安全的逃生通道。比较了HVES与传统五种通风系统内烟气浓度,对HVES喷口速度进行了优化分析。讨论了火源热释放率(HRR),火源高度和HVES与半横向排烟相结合通风的影响。研究表明:HVES与传统五种通风系统相比,HVES能够营造一个非常明显的无烟气的逃生通道。HVES系统中V1:V2>2.33时,逃生通道内能见度整体均值保持在29 m以上,CO浓度均值下降到10 ppm以下,温度均值下降到60℃以下。在HVES个性化通风的基础上,当增加了排风式半横向通风系统时逃生通道内距离火源最近点的最高温度从117℃降到60℃,有利于逃生通道内人员疏散。
This paper introduces a horizontal and vertical combination of breathing zone collision air tunnel fire evacuation system(HVES),which can be used to create a clean and safe evacuation passageway.The flue gas concentration in HVES and five traditional ventilation systems were compared,and the velocity of HVES nozzle was optimized.The effects of heat release rate(HRR),height of fire source and combined ventilation of HVES and semi-transverse smoke exhaust were discussed.This study shows that HVES can create a smokeless evacuation passageway compared with the traditional five ventilation systems.When V1:V2>2.33 in HVES system,the overall average visibility in the escape passage remains above 29 m,the average CO concentration drops below 10 ppm,and the average temperature drops below 60℃.On the basis of HVES personalized ventilation,when the exhaust semi-transverse ventilation system is added,the highest temperature in the escape passage from the nearest point to the fire source decreases from 117℃to 60℃,which is very conducive to evacuation in the evacuation passageway.
作者
苏义成
韩欧
苟立
SU Yi-cheng;HAN Ou;GOU Li(School of Building Services Science and Engineering,Xi’an University of Architecture and Technology,710055)
出处
《建筑热能通风空调》
2020年第9期35-40,65,共7页
Building Energy & Environment
关键词
隧道逃生通道
火灾
防排烟
FDS
tunnel evacuation passageway
fire
smoke control
FDS
