• Proceedings of the KIEE Conference
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• 2015.07a
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• pp.1086-1087
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• 2015

본 논문에서는 태양전지 모듈의 표면 오염으로 인한 태양광발전량의 감소를 사전 예방하기 위해 영상기술을 이용한 표면 오염도 자동검출 기술에 대해 논의하였다. 일반적인 태양광발전시스템의 경우 태양전지 모듈의 표면 오염원 제거를 위해 사람에 의한 수동적인 방법에 의존하는 것이 현실이나, 커다란 규모의 태양광 발전시설의 경우는 인력으로 오염원을 제거하는 것은 거의 불가능 하다. 이러한 관점에서 태양전지 모듈 표면에 떨어진 오염 물질로 인한 출력감소를 사전에 예방하고, 시스템을 효율적으로 운영하기 위해 이미지 영상기술이 적용되었다. 본 기술은 기본적으로 레이저 광원과 먼지와 상호 interaction을 통해 생성된 반사파 및 이를 CCD 영상으로 획득하고 태양전지 모듈 표면의 오염원의 유무, 균일/불균일 분포 등의 3가지 서로 다른 조건을 설정하여 비교 시험을 수행하였고, 개발된 오염측정 시스템을 수상 태양광 발전 파일럿 설비에 적용하여 운전성능을 검증하였다.

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2002.11a
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• pp.298-299
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• 2002

산업의 발전과 인구의 과밀, 자동차의 증가는 오염물질의 배출을 크게 증가시켰지만 최근 관련 규제의 강화로 각 도시의 대기질은 많이 개선되어 왔다. 그러나 대기중으로 배출되는 오염물은 여전히 선진국에 비하면 기준치를 훨씬 넘는 높은 수준이다. (김우규 등, 1995) 우리나라에서 미세먼지와 SO$_2$, NOX, CO, VOC 등 대기오염물질로 인한 사회적 피해 비용이 1999년 기준 연간 최저 32조원에서 최고 60조원으로 평균 45조원에 달하는 것으로 나타났고, 이 중에 입자상 오염물질은 6조에서 18조원까지의 재산상 피해를 입히는 것으로 나타났다. (중략)

• Journal of the Korean earth science society
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• v.43 no.2
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• pp.265-282
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• 2022

This study analyzes the impact of long-range transport of biomass burning emissions from northeastern China on the concentration of particulate matter of diameter less than 10 ㎛ (PM₁₀) in Korea using the Weather Research and Forecasting model coupled with Chemistry (WRF-Chem). Korea was impacted by anthropogenic emissions from eastern China, dust storms from northern China and Mongolia, and biomass burning emissions from northeast China between April 4-and 7, 2020. The contributions of long-range PM₁₀ transport were calculated by separating biomass burning emissions from mixed air pollutants with anthropogenic emissions and dust storms using the zeroing-out method. Further, the radiation energy budget over land and sea around the Korean Peninsula was analyzed according to the distribution of biomass burning emissions. Based on the WRF-Chem simulation during April 5-6, 2020, the contribution of long-range transport of biomass burning emissions was calculated as 60% of the daily PM₁₀ average in Korea. The net heat flux around the Korean Peninsula was in a negative phase due to the influence of the large-scale biomass burning emissions. However, the contribution of biomass burning emissions was analyzed to be <45% during April 7-8, 2020, when the anthropogenic emissions from eastern China were added to biomass burning emissions, and PM₁₀ concentration increased compared with the concentration recorded during April 5-6, 2020 in Korea. Furthermore, the net heat flux around the Korean Peninsula increased to a positive phase with the decreasing influence of biomass burning emissions.

• The Journal of Society for e-Business Studies
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• v.25 no.1
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• pp.109-121
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• 2020

The purpose of this study is to find out primary policies for reducing PM(particulate matter) as well as for improving the quality of life. Serious particulate matters cause to diverse healthcare and economy problems including business transactions. Unfortunately, until recently there are very few researches regarding the decision-making process for particulate matter policies. This study has applied the AHP(Analytic Hierarchy Process) method to develop cooperative policy making processes. The upper layer of this hierarchy analysis consists of four parts, i.e., transportation, production facility, living environment, and urban planning management. And each upper layer parts has their own three policies. 25 experts including policy-makers, academic researchers and industrial specialists have decided the primary policies and directions. The most significant PM policy is the mandatory reduction of air pollution and suspension of factory operation in the production industry. The results of this study can lead to guidelines for making environmental policies.

• Journal of the Korean Applied Science and Technology
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• v.29 no.4
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• pp.561-569
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• 2012

Study attempts to evaluate the environmental cost and benefit for management of particulate matters of Donghae harbor in Gangwondo. The level of fine dust suspended in the vicinity of the harbor was quite high, exceeding the national standard ($100{\mu}g/m^3$) depending on the places. The test field harbor deals with lots of limestone and coal, so that fine particulates could be generated while loading it and unloading. It was estimated that the direct handling of cargos might produce 12 tons of PM10(Particulate Matters of $10{\mu}m$) a year. In addition, heavy vehicles for transportation of various cargos including raw materials emit huge amount of diesel soots and cause to redispersion of road dust. The local government spends more than 2 billion won every year, and it contributes to reduce the atmospheric dust. According to the prediction of cost to benefit, it will present the effectiveness in 720 % maximum and at least 240 %.

• Environmental and Resource Economics Review
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• v.12 no.3
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• pp.469-485
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• 2003

This paper reports on the results of epidemiological investigation of daily health effects in the elderly associated with daily exposure to particulate matters in Korea. Our main focus is on the potential difference in health effects between PM10 and PM2.5. While the Korean environmental authority has set an ambient standard for PM10, the government currently does not monitor PM2.5, which has no national standard. A daily data on respiratory symptoms as well as PM concentrations are collected for a total of 120 days. Using a probit model, we find statistically significant negative health effects of PM2.5 on respiratory symptoms among the nonsmoking elderly, while PM10 does not show such effects from the estimation. This result suggests that, for air quality regulatory purposes, PM2.5 can be a more appropriate air pollutant than PM10.

• Journal of Cadastre & Land InformatiX
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• v.48 no.2
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• pp.185-195
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• 2018

In the Seoul Metropolitan City, the PM(pariculate matter) application used by the citizens provides the PM concentration of the nearest monitoring stations located on the PM monitoring stations. Currently, the selecting method of the PM monitoring network considered by the Ministry of Environment is based on considering the monitoring station distribution and population density only. In this study, we analyzed the distance between PM monitoring station and the administrative center point in addition to the above considerations. The number of test sites was verified and the range of coverage of each monitoring stations was indicated by using the Voronoi algorithm and hexagon grid. The spatial position problem of the PM monitoring station was suggested by spatial data analysis. The variables of spatial data analysis are single-family houses, apartments, $1^{st}$ class neighborhood, $2^{nd}$ class neighborhood, garbage disposal plant, hazardous material disposal facility, factory, and the density map. The analysis result of the selection criterion considering the additional variables for new PM monitoring stations was presented, in addition to the selection criteria provided by the Ministry of Environment.

• Proceedings of the KAIS Fall Conference
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• 2009.12a
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• pp.659-662
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• 2009

본 연구는 건축자재로 널리 사용되는 PVC 바닥상재 표면의 오염성 및 정전기로부터 보호하기 위하여 기존에 사용하는 광경화형 우레탄-아크릴 수지에 내오염/대전성을 향상시킨 광경화형 내오염 코팅액 개발에 관한 것이다. PVC 바닥상재용으로 사용되는 내오염성이 없는 우레탄-아크릴 수지에 4가 암모늄을 사용한 수용성 대전방지제와 아크릴용 대전방지제, 폴리우리탄용 대전방지제를 수지의 양 대비 함량(wt%) 5~20%로 변화하여 첨가한 후 1000rpm에서 30분간 고속 배합하여 수지의 내오염/대전성을 향상시킨 내오염 코팅액을 제조하였다. 제조한 내오염 코팅액은 코팅 층의 두께조절이 가능한 코팅(Bar-coating)을 사용하여 PVC 바닥상재에 코팅 한 후 내오염성, 대전성, 부착력, 코팅두께 등의 코팅 층 표면물성을 평가하였다. 연구결과, 수지에 수용성대전방지제 15%를 혼합하여 제조한 코팅액을 Bar-coater No.12로 코팅한 코팅표면이 전기저항($3.24{\times}10^9{\Omega}/cm^2$), 내오염도(매직 Test, 먼지부착 Test) 및 부착력(100%) 모두 가장 좋은 물성을 보였으며, 전반적으로 함량이 많을수록 전기저항과 오염도에서 우수한 것으로 나타났다. 그러나 대전방지제가 과량으로 들어간 경우 migration 현상이 보이는 것을 알 수 있었다.

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2007.10a
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• pp.132-133
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• 2007

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2007.10a
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• pp.405-406
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• 2007