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입자의 실시간 관측이 가능한 임팩터의 설계 및 성능해석

Title
입자의 실시간 관측이 가능한 임팩터의 설계 및 성능해석
Other Titles
Real-time Observation on Airborne Particles with Visual Impactor
Author
안강호
Keywords
Visual Impactor; Collection efficiency; Airborne particles; Heterogeneous nucleation; Humidity
Issue Date
2003-03
Publisher
한국대기환경학회
Citation
한국대기환경학회지, v.19, no.1, page.67-76
Abstract
Recently consideration of health and interest on bio aerosols have been growing steadily. In this study, inertial-timeobservation on the particles collected on impaction plate, and named Visual Impactor. Flow field and particletrajectory in the space between nozzle and impaction plate was analyzed numerically, and the collectionefciencies were calculated. Calibration and performance evaluation of the Visual Impactor was conducted withpolydisperse aerosols generated from 0.1% sodium chloride solution. Cut-was in good agreement with that from experimental results. Because of particle bounce and particle deposition onnozzle tip due to short jet-to-plate distance, the collection efficiencies from numerical and experimental analyseswere different slightly. Visual Impactor was used to collect airborne particles, and the features of collectedparticles could be seen in real-were sampled and compared one another. The features of collected airborne particles were dependent stronglyupon relative humidity. In addition, with hours elapsing, shapes and colors of collected particles were changed byevaporation and surface tension, etc.
URI
http://www.dbpia.co.kr/journal/articleDetail?nodeId=NODE00174656https://repository.hanyang.ac.kr/handle/20.500.11754/155427
ISSN
1598-7132
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MECHANICAL ENGINEERING(기계공학과) > Articles
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