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입자의 실시간 관측 및 포집이 가능한 임팩터의 설계 및 성능해석
육세진(Se-Jin Yook),안강호(Kang-Ho Ahn) 대한기계학회 2002 대한기계학회 춘추학술대회 Vol.2002 No.5
Recently consideration of health and interest on bio aerosols have been growing steadily. In this study,<br/> inertial impactor, which can be used to collect airborne particles and bio aerosols, was newly devised for realtime<br/> observation on the particles collected on impaction plate, and named Visual Impactor. The Visual<br/> Impactor was used to collect airborne particles, and the features of particles collected on the impaction plate<br/> could be seen in real-time. Airborne particles in different weather conditions (fine, cloudy, and rainy) were<br/> sampled and compared one another. Features of collected airborne particles were dependent strongly upon<br/> relative humidity of the ambient air. In addition, with hours elapsing, shapes and colors of collected airborne<br/> particles were changed by evaporation and surface tension, etc.
김문원,육세진,류태우,Kim, Moon-Won,Yook, Se-Jin,Yu, Tae U 한국입자에어로졸학회 2018 Particle and Aerosol Research Vol.14 No.3
Recently, there has been much research on the effect of ultrafine dust on human body with increasing interest in the ultrafine dust. In the Republic of Korea, there are many old thermal power plants, and the amount of ultrafine dust emitted from the thermal power plants is reported to be about 14% of the total amount of domestic fine dust. Therefore, the amount of fine dust from the flue gas desulfurization facility in the thermal power plant needs be reduced. In this study, we made an experimental setup to simulate a flue gas desulfurization facility and analyzed the physical characteristics of the particles passing through a mist eliminator. Experiments were carried out to investigate the collection efficiency of the mist eliminator by using the Arizona Test Dust in a dry environment, and then spraying limestone slurry into the flue gas desulfurization system equipped with the mist eliminator to examine the size and morphology of limestone particles upstream and downstream of the mist eliminator. Cut-off size of the mist eliminator was formed at about $6{\mu}m$. The result of this study is expected to be helpful for designing an electrostatic precipitator for removing particles passing through the mist eliminator.
지하터널에서 주행하는 전동차의 하부에서 발생한 입자의 이동경로 예측
이경란,김원근,육세진,우상희,김종범,배귀남,박형구,윤화현,Lee, Kyung-Ran,Kim, Won-Geun,Yook, Se-Jin,Woo, Sang-Hee,Kim, Jong Bum,Bae, Gwi-Nam,Park, Hyung-Koo,Yoon, HwaHyeon 한국입자에어로졸학회 2015 Particle and Aerosol Research Vol.12 No.3
In this study, the flow around a subway train running in an underground tunnel was numerically estimated. For the validation of the numerical results, the airflow velocity at a point underneath a subway train was measured using an ultrasonic anemometer. Then, the trajectories of particles generated at the contact points between the wheels and rails were numerically predicted. By considering the airflow velocity and particle trajectories, the space underneath the T-Car (trailer car) was expected to be appropriate for the room for the installation of a dust-removal system.