活塞风对地铁区间隧道空气品质的影响研究
Influence of piston wind on air quality of underground railway tunnels
摘要：
地铁环控系统设计往往重视对区间空气温度控制而忽略区间的空气品质控制，但区间空气品质将直接影响到列车车厢内部的空气品质。为分析地铁活塞效应对区间隧道通风量的影响，以某实际工程为研究对象，对区间隧道通风系统进行了模拟计算分析，对比了不同方案下的列车活塞效应，得出了提高区间隧道空气品质的方法。
关键词：空气品质,活塞效应,地铁,新风量,污染物,模拟计算
Abstract：
The design of underground railway environment control system usually concerns on the interval air temperature, but ignores the control of interval air quality, which directly affects the air quality inside the train compartment. In order to analyse the influence of piston effect on the ventilation rate of interval tunnels, based on an actual case, simulates the interval tunnel ventilation system, compares the piston effect of the train under various scenarios, and concludes the approach to effectively improve the air quality of interval tunnels.
Keywords:air quality, piston effect, underground railway, outdoor air rate, pollutant, simulation calculation