PDF(Pubmed)
Abstract：
In urban areas, a major source of harmful particulate matter is generated by vehicles. In particular, bus stops, where people often stay for public transportation, generate high concentrations of particulate matter compared to the general atmosphere. In this study, a non-powered type brush filter that generates electrostatic force without using a separate power source was developed to manage the concentration of particulate matter exposed at bus stops, and the removal performance of particulate matter was evaluated. The dust collection performance of the non-motorized brush filter varied by material, with particle removal efficiencies of 82.1 ± 3.4, 76.1 ± 4.7, and 73.7 ± 4.5% for horse hair, nylon, and stainless steel, respectively. In conditions without the fan running to see the effect of airflow, the particle removal efficiency was relatively low at 58.2 ± 8.4, 53.6 ± 9.2, and 58.0 ± 7.3%. Then, to check the dust collection performance according to the density, the number of brushes was increased to densify the density, and the horse hair, nylon, and stainless steel brush filters showed a maximum dust collection performance of 89.6 ± 2.2, 88.3 ± 3.2, and 82.1 ± 3.8%, respectively. To determine the replacement cycle of the non-powered brush filter, the particulate removal performance was initially 88.0 ± 3.2% when five horse hair brushes were used. Over time, particulate matter tended to gradually decrease, but after a period of time, particulate matter tended to increase again. The purpose of this study is to evaluate the particulate matter removal performance using a brush filter that generates electrostatic force without a separate power source. This study\'s brush filter is expected to solve the maintenance problems caused by the purchase and frequent replacement of expensive HEPA filters that occur with existing abatement devices, and the ozone problems caused by abatement devices that use high voltages.
摘要：
在城市地区,有害颗粒物的主要来源是车辆产生的。特别是,巴士站,人们经常在那里乘坐公共交通工具，与一般大气相比，产生高浓度的颗粒物。在这项研究中,开发了一种无需使用单独电源即可产生静电力的非动力型刷式过滤器，以管理暴露在公交车站的颗粒物浓度，并对颗粒物的去除性能进行了评价。非机动刷式过滤器的集尘性能因材料而异，马毛的颗粒去除效率分别为82.1±3.4、76.1±4.7和73.7±4.5%，尼龙,不锈钢，分别。在没有风扇运行的情况下，观察气流的影响，颗粒去除效率相对较低，分别为58.2±8.4、53.6±9.2和58.0±7.3％。然后，根据密度检查集尘性能，增加刷子的数量以致密化密度，和马毛,尼龙,不锈钢刷式过滤器的最大集尘性能为89.6±2.2、88.3±3.2和82.1±3.8％，分别。要确定无动力刷式过滤器的更换周期，当使用五个马毛刷时，颗粒去除性能最初为88.0±3.2%。随着时间的推移,颗粒物趋于逐渐减少，但过了一段时间,颗粒物又有增加的趋势。这项研究的目的是评估使用刷式过滤器在没有单独电源的情况下产生静电力的颗粒物去除性能。本研究的刷式过滤器有望解决因购买和频繁更换昂贵的HEPA过滤器而导致的维护问题，以及使用高电压的减排设备引起的臭氧问题。
