地铁车站公共区CO_2浓度测试及新风量分析研究  

Field Tests of Carbon Dioxide Concentration and Analysis of Fresh Air Amount in Subway Public Areas

作　　者：陈永江[1] 

机构地区：[1]中铁二院工程集团有限责任公司,成都610000

出　　处：《制冷与空调（四川）》2017年第2期122-129,共8页Refrigeration and Air Conditioning

摘　　要：通过对以沙坪坝站为主要研究对象的全年测试及其余站点的对比测试,得到了关于地铁站站内CO_2浓度的变化规律及不同工况下出入口自然通风新风量的大小。结果表明,一般出入口进风时间长、客流少,出口尺寸大时CO_2浓度越低,站厅层和站台层的CO_2浓度变化规律近似,且均与客流呈正负相关性,站台浓度略高于站厅;关闭及近似关闭新风机后,CO_2浓度仍远远小于1500ppm的限值要求,出入口自然通风新风量完全可以充分满足站内人员新风需求。By means of annual field measurement of Shapingba subway station and partially seasonal tests of other stations in comparison, the change law of carbon dioxide concentration within the station and naturally ventilated fresh air amount of entrance in different operating conditions can be obtained. The results show that if natural air performs mainly as inlet air, the passenger flow is low and the entrance is wide, the carbon dioxide concentration will be low. The change law of carbon dioxide concentration in the hall layer is similar with that in the platform layer which is relatively higher. Furthermore, there is positive and negative correlation between carbon dioxide concentration and passenger flow. In the absence of fresh air fan, carbon dioxide concentration is still far less than 1500 ppm, which is set as the maximum acceptable value. It can be concluded that naturally entilated fresh air amount of entrance is much more than the personnel fresh air demands within the station.

关 键 词：地铁车站 二氧化碳浓度 实测 自然通风 

分 类 号：U231.5[交通运输工程—道路与铁道工程]