Investigation on lowering commuters' in-cabin exposure to ultrafine particles
Investigation on lowering commuters' in-cabin exposure to ultrafine particles
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DOI：
10.1016/j.trd.2012.10.005
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发表时间：
2013
影响因子：
7.6
通讯作者：
Bin Xu;Yifang Zhu
中科院分区：
文献类型：
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作者：
Bin Xu;Yifang Zhu
为了确定减少通勤者超细颗粒暴露的方法，对通风条件、机械气流速率、驾驶速度、机舱空气过滤器质量和机舱空气过滤器使用等因素进行了检查。结果表明，当风扇被设置为再循环时，与设置为再循环关闭时相比，舱内与道路上的比率降低了20%，因为更少的超细颗粒在舱内外之间交换。此外，当风扇设置为再循环关闭时，在较低的机械气流速率下，该比率降低了40%。与最薄的相比，最厚的机舱空气过滤器导致机舱内与道路上的比率降低了30%。因此，具有最小UFP舱内与道路上比率的驾驶条件是当车辆以高效舱内过滤器操作时，通风设置为风扇开启并且再循环为再循环开启，并且处于高通风气流速率。此外，通过高效颗粒空气过滤器使机舱内空气再循环被发现显著减少了机舱内UFP暴露。
To determine ways to reduce commuters’ ultrafine particle exposure, factors such as ventilation condition, mechanical airflow rate, driving speed, cabin air filter quality, and cabin air filter use are examined. The results show that the in-cabin to on-roadway ratio is reduced by 20% when the fan is set to recirculation-on versus when set to recirculation-off because fewer ultrafine particles are exchanged between the inside and outside of the cabin. Also, when the fan is set to recirculation-off, the ratio is reduced by 40% at lower mechanical airflow rates. The thickest cabin air filter resulted in a 30% in-cabin to on-roadway ratio decrease compared with the thinnest. Thus, driving conditions with the least UFP in-cabin to on-roadway ratio is when a vehicle is operating with a high efficiency cabin filter, the ventilation set to fan-on and recycling is recirculation on, and at a high ventilation airflow rate. Furthermore, recirculating in-cabin air through a high efficiency particulate air filter was found to significantly reduce in-cabin UFP exposure.