铁道科学与工程学报2025，Vol.22Issue(9)：4182-4191,10.DOI:10.19713/j.cnki.43-1423/u.T20241864
地铁客室多源颗粒污染物净化策略试验研究
Experimental study on purification strategies for multi-source particulate pollution in subway cabin
摘要
Abstract
With the acceleration of urbanization and the continuous increase in passenger volume,indoor air quality in the confined spaces of subway trains has become an increasingly significant public health concern.In this study,multi-source particulate matter dispersion experiments were conducted in a typical subway train cabin,with particulate matter concentrations monitored using six-stage samplers and dust sensors.Two air purification strategies,based on intense field dielectric technology and dielectric barrier discharge technology,were proposed.The results indicate that,due to the relatively uniform airflow in the subway cabin,particulate matter of various types can diffuse throughout the entire car via airborne transmission,with a concentration difference of less than 20%between the two ends of the cabin.However,alongside the diffusion of particulate matter in the air,significant deposition of particles on the surfaces of objects within the cabin is also observed,which may pose challenges for maintaining cleanliness and hygiene in subway environments.To address the control of particulate matter in the cabin,the air purification technologies implemented through the ventilation and air-conditioning systems can effectively reduce the concentration of both bioaerosols and non-biological fine particulate matter in large indoor spaces.In terms of microbial aerosol purification,the average real-time sterilization rates of the intense field dielectric technology and dielectric barrier discharge technology are 59.40%and 44.98%,respectively.For the control of non-biological fine particulate matter,the purification rates of these technologies are 80%and 90%,respectively.Furthermore,although the combination of intense field dielectric technology and dielectric barrier discharge technology can further reduce particulate matter concentrations,the improvement in the purification rate is not statistically significant.The research findings can provide a scientific basis for the optimization design and operational strategies of subway train air conditioning systems,as well as valuable insights for improving cabin air quality and ensuring a healthy environment for passengers.关键词
地铁列车客室/全尺寸试验/空气质量/细颗粒物/生物气溶胶Key words
subway train cabin/full-scale experiment/indoor air quality/fine particulate matter/microbial aerosol分类
交通工程引用本文复制引用
于德壮,伍钒,徐任泽,余简慈,李恒奎,潘小旺..地铁客室多源颗粒污染物净化策略试验研究[J].铁道科学与工程学报,2025,22(9):4182-4191,10.基金项目
国家自然科学基金面上项目(52072413) （52072413）
湖南省科技创新计划资助项目(2024RC3030) （2024RC3030）
