• 제목/요약/키워드: air particulate pollution

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Performance Characteristics of a Hybrid Particulate Collector (하이브리드 집진장치의 성능 특성)

  • 최호경;이시훈;김상도;박영옥
    • Proceedings of the Korea Air Pollution Research Association Conference
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    • 2003.11a
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    • pp.493-494
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    • 2003

  • 본 연구에서는 전기집진 기술과 여과집진 기술의 조합에 의한 먼지입자의 포집성능 상승효과를 최대한 높일 수 있는 먼지부하 저감형 하이브리드 집진장치(Hi-Filter)를 개발하기 위한 연구의 일환으로 파일럿 규모의 실험장치에서 운전 조건을 변화시키면서 장시간 실험을 통해 집진성능 특성 변화를 고찰한다. (중략)

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Effect of Anion Generating Air Cleaner on the Components of ETS in a Closed Room (음이온 발생 공기청정기에 의한 밀폐된 실내공간에서의 ETS성분 변화)

  • Hwang, Keon-Joong;Rhee, Moon-Soo;Ra, Do-Young
    • Journal of the Korean Society of Tobacco Science
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    • v.20 no.1
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    • pp.124-130
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    • 1998

  • This study was conducted to evaluate the ability of anion generating air cleaner to remove gases, vapor and particles from closed room contaminated with environmental tobacco smoke (ETS). The measurements covered particle sizes of 13.8-542.5nm, particle concentration, surface area, volumes UVPM, FPM, solanesol, and the following gases and vapor; carbon dioxide, carbon monoxide, nicotine, and 3-ethenylpyridine. Tobacco smoke was generated and mixed in a closed room in which the airflow rates were in the range of 0.00-0.04 m/s. The anion generating air cleaner was startedl and the decay rates for the gases, vapor and particles were measured, When the use of anion generating air cleaner, solid components of ETS, such as respirable suspended particle (RSP), utraviolet particulate matter (UVPM, fluorescent particulate matter (FPM) and solanesol was sharply decreased, and vapor phase components of ETS, such as nicotines 3-ethenylpyidine were modelately decreased by time elapse. Even the use of anion generation air cleaner, the decreasing rate of carbon dioxide concentration was similar with control, and the decreasing rate of carbon monoxide was slower than that of control. Our results indicated that the use of anion generting air cleaner had an effect on reduction of solid and vapor components from ETs, but it had no effect on gaseous components of ETS.

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Estimating Social Benefits According to Exhaust Gas Reduction Devices (DPF) (배출가스 저감장치(DPF) 부착에 따른 사회적 편익 추정)

  • Choi, Soungkyu;Kim, Yongdal;Kim, Hogyeong;Bae, Jinmin
    • Journal of Auto-vehicle Safety Association
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    • v.10 no.3
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    • pp.27-31
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    • 2018

  • The People have a bad perception about diesel vehicle because of serious air pollution, increase fine dust and global vehicle company's diesel gate. Starting the project in 2005, Ministry of Environment has been supporting that is exhaust gas reduction devices (DPF) on diesel vehicles in the metropolitan area. During the period of 2017.01.01 to 2017.12.31, 10,030 diesel vehicles installed exhaust gas reduction devices (DPF). Among them, 9,921 diesel vehicles that they have sufficient data for analysis were analyzed amount of particulate matter reduction before and after exhaust gas reduction devices (DPF) was installed. Opacity smoke meter measures the concentration of particulate matter. So concentration of particulate matter was converted into a mass unit, and then calculated the total amount of reduced particulate matter. It was estimated that social benefits is costs required to remove it from the total amount of particulate matter.

  • https://doi.org/10.22680/kasa2018.10.3.027 인용 PDF KSCI

On the Origin of Visibility Degradation in Seoul (서울지역의 시정 장애 요인에 관한 연구)

  • 윤순창;이강웅
    • Journal of Korean Society for Atmospheric Environment
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    • v.14 no.3
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    • pp.229-236
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    • 1998

  • Visibility is a good indicator of comprehensive alto quality. The prevailing visibility in Seoul is no better than the past although the average concentration of SO2 and TSP (total suspended particulate) has decreased quite significantly in the past decade, owing to the government efforts to reduce the emission. Then, a question arises why visibility has not been improved. In order to answer this question we have investigated which components of air pollutants are most responsible for the visibility degradation in Seoul. Analysis on the visibility vs the aerosol sixte distribution measured by an optical particle counter shows that the particles of the size interval between 0.5mm and 2.5mm are most responsible for the visibility degradation. Among the criteria air Pollutants, NOB concentration is found to be moot responsible, rather than PM10. ton analysis of the particulate collected by a high volume sampler shows that the nitrate component increases more significantly than other ions when visibility becomes very poor. Therefore, we conclude that the major causes of visibility degradation in Seoul are the increase of NOB, nitrates and the particles of the size range between 0.5mm and 2.5mm.

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