基于CO_(2)污染调查对轨道交通车辆通风优化研究  

Research on ventilation optimization of rail transit vehicles based on CO_(2) pollution investigation

作　　者：王新伟 周健 覃道枞 陈小开[1] WANG Xinwei;ZHOU Jian;QIN Daocong;CHEN Xiaokai(Faculty of Civil Engineering and Mechanics,Kunming University of Science and Technology,Kunming 650500,China)

机构地区：[1]昆明理工大学建筑工程学院,昆明650500

出　　处：《工业安全与环保》2022年第10期91-95,共5页Industrial Safety and Environmental Protection

基　　金：国家自然科学基金(51568026)。

摘　　要：交通强国的兴起促进了绿色交通发展,地铁作为轨道交通的骨干,使用时间长且载客流量巨大,车辆IAQ对驾乘人员健康有重要影响。以昆明地铁1号线为例,现场实测了车内CO_(2)浓度,运用Fluent软件模拟优化了车厢通风质量,以改善车辆IAQ。结果表明:车内空气存在一定的CO_(2)污染,特别是高峰期车内CO_(2)污染超标,需要优化通风;模拟发现平峰期车厢中部CO_(2)浓度易超标,垂直送风可以明显降低CO_(2)污染且气流速度分布也合理;高峰期车内CO_(2)浓度均超标,送风角度对CO_(2)平均浓度影响不大,增大送风速度稀释了车内CO_(2)浓度,提高了车辆IAQ,为有效的通风优化措施;通过现场实测验证了通风优化模拟结果比较合理。The emergence of a strong transportation nation has promoted the development of green transportation.As the backbone of rail transportation,subway is used for a long time and carries huge passenger flow,and the IAQ of vehicle has an important impact on the health of drivers and passengers.Taking Kunming Metro Line 1 as an example,the cabin CO_(2) concentration was measured on site,and the cabin ventilation quality was simulated and optimized by Fluent to improve the subway IAQ.The results show that there is a certain amount of CO_(2) pollution in the air inside the car,especially during peak hours when the CO_(2)pollution exceeds the standard and needs to be optimized for ventilation.The simulation results show that the CO_(2) concentration in middle cabin is easy to exceed the standard level during the non-peak period,the vertical air supply can significantly reduce the CO_(2) pollution and the airflow speed distribution is reasonable.In peak period,the cabin CO_(2) concentration exceeds the standard level,and the air supply angle has little effect on the CO_(2) average concentration,increasing the air supply speed dilutes the CO_(2) concentration and improves the cabin IAQ,which is an effective ventilation optimization measure.The simulation results of ventilation optimization are reasonable through field measurement.

关 键 词：地铁车厢 CO_(2)污染 数值模拟 车内空气品质(IAQ) 送风角度 通风优化 

分 类 号：U270.383[机械工程—车辆工程]