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공기 중 미세입자 및 바이러스 여과를 위한 정전기식 필터의 설계 및 수치해석
한창호(Chang-Ho Han),김경서(Gyeongseo Kim),박태룡(Taeryong Park),양현준(Hyeonjun Yang),한영수(Yeongsu Han),장재성(Jaesung Jang) 대한기계학회 2013 대한기계학회 춘추학술대회 Vol.2013 No.12
Many airborne nanoparticles and viruses can induce significant health disorders through a respiratory system of human being. In order to prevent this, ‘air filter’ is normally used for the filtration of the airborne particles, but it has been observed that the larger the filtration efficiency, the more the pressure drop of the filter. In this study, a new type of electrostatic filter is designed which can keep the pressure drop in low value with capturing many airborne nanoparticles as possible using both inertial impaction and electrostatic mechanism. We conducted a numerical analysis of particle tracing with respect to three parameters, air flow rate, electric field intensity, and particle size.
충격하중의 방향에 따른 정전집진기 집진판의 진동 특성 연구
나종문,이기백,양장식 한국소음진동공학회 1995 소음 진동 Vol.5 No.2
In this paper, double exposure holographic interferometry using ruby pulse laser is formed in order to investigate the propagation of transient waves. The vibration characteristics according to the change of impact load direction, i.e., impacted in the shear direction and in the normal direction are analyzed. It was observed that the macroscopic trends of transient wave generation and propagation in the assembly of precipitator plates were almost similar regardless of the change of impact load direction. But the propagation and mixing of transient wave was advanced relatively slowly when impacted in the normal direction.
박용디젤기관의 대기오염 저감을 위한 전기 다단 임팩션 시스템의 집진특성
여석준 ( Seok Jun Yoa ),권준형 ( Jun Hyeong Kwon ) 한국어업기술학회 2015 수산해양기술연구 Vol.51 No.4
The main object of this study is to investigate the collection characteristics of an electro-static multi-staged impaction system, experimentally. The experiment is carried out to analyze the characteristics of pressure drop and collection efficiency for the present system with the experimental parameters such as the inlet velocity, stage number, applied voltage and shape of discharge electrode, etc. In results, the pressure drop is shown below 148 mmH2O lower than that of the conventional bag filter at inlet velocity 3.46 m/s and 5 stage. For 5 stage , the collection efficiencies are to be 97.4, 99.0% with the applied voltage 0 kV at the inlet velocity 2.07, 3.46 m/s, while 98.4, 99.9% with 40 kV of a sharp edge discharge electrode. Additionally, the present system is to be considered as an effective compact system for a removal of particulate pollutants from marine diesel engines due to much higher collection efficiency and appropriate pressure drop.