严寒地区地铁车站活塞效应与机械通风耦合作用下混合通风研究
Mixed Ventilation under the Coupling of Piston Effect and Mechanical Ventilation in Subway Stations in Severe Cold Region
马广兴 1徐腾蛟 2王林成 2王东3
作者信息
- 1. 内蒙古工业大学 土木工程学院,呼和浩特 010050;内蒙古自治区土木工程结构与力学重点实验室,呼和浩特 010050
- 2. 内蒙古工业大学 土木工程学院,呼和浩特 010050
- 3. 呼和浩特市地铁实业有限公司,呼和浩特 010050
- 折叠
摘要
以严寒地区呼和浩特市的地铁一号线东影路典型岛式站为研究对象,采用计算流体力学软件Fluent,模拟车站机械通风系统和活塞效应耦合作用下活塞通风特性随时间变化的规律和车站整体通风情况.结果表明:车站机械通风系统对站厅层活塞通风量的影响均要强于站台层,机械通风系统开启不会对车站瞬时活塞通风量的变化产生明显影响,但会随着活塞通风量减小而影响增大.轨道排热系统对列车进站及停站过程中送入站厅的活塞风量有明显限制作用,也可增加列车离站时由人员出入口引入站厅的新风量.严寒地区地铁车站通风系统运行时,在春夏秋季节可以充分利用列车离站活塞效应引入新风来改善车站内的空气品质.
Abstract
Taking DYL typical island station of Hohhot Metro Line 1 in severe cold region as the research object,the computational fluid dynamics software Fluent was used to simulate the change rule of piston ventilation characteristics over time and the overall ventilation of the station under the coupling effect of mechanical ventilation system and piston effect.The results show that the mechanical ventilation system has a stronger influence on the piston ventilation volume of the station floor than that of the platform floor.The running of the mechanical ventilation system has no obvious influence on the change of the instantaneous piston ventilation volume of the station,but it will increase with the decrease of the piston ventilation volume.The track heat removal system has a significant limiting effect on the piston air volume sent into the station hall during the train entering and stopping,and also increase the fresh air volume brought into the station hall by personnel entrances and exits when the train leaves the station.During the operation of the ventilation system of subway stations in severe cold region,in spring,summer and autumn,the train departure piston effect will be fully utilized to introduce fresh air for improving the air quality inside the stations.
关键词
地铁/通风/数值计算/地铁车站/活塞效应Key words
subway/ventilation/numerical calculation/subway station/piston effect引用本文复制引用
基金项目
内蒙古工业大学科学研究项目(ZY201812)
出版年
2024
NETL
NSTL
万方数据