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Enhancement of Collection Efficiency of an Inertial Impactor Using an Additional Punched Impaction Plate

Title
Enhancement of Collection Efficiency of an Inertial Impactor Using an Additional Punched Impaction Plate
Author
육세진
Keywords
Inertial impactor; Collection efficiency; Stokes number; Additional punched impaction plate
Issue Date
2017-10
Publisher
TAIWAN ASSOC AEROSOL RES-TAAR
Citation
AEROSOL AND AIR QUALITY RESEARCH, v. 17, no. 10, page. 2349-2357
Abstract
In this study, the collection efficiency of a round-nozzle inertial impactor was enhanced through use of an additional punched impaction plate. The additional plate was installed between the nozzle outlet and the existing impaction plate. To determine its effect, a simulation and an experiment were conducted. A parametric study was performed on a PM2.5 inertial impactor to improve the optimum efficiency based on the hole diameter of the additional plate and its distance from the existing plate. As a result, the cut-off size was reduced by 27% from 2.52 mu m to 1.84 mu m. The effect of the additional punched impaction plate on PM1 and PM10 inertial impactors was also investigated. The improvement in efficiency could be observed even when the additional punched impaction plate had varying Reynolds numbers and nozzle sizes. Accordingly, the (Stk(50))(0.5) value was reduced by 25% from 0.49 to 0.37 by adding a punched impaction plate in a roundnozzle inertial impactor.
URI
http://www.aaqr.org/doi/10.4209/aaqr.2017.01.0018https://repository.hanyang.ac.kr/handle/20.500.11754/115996
ISSN
1680-8584; 2071-1409
DOI
10.4209/aaqr.2017.01.0018
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > MECHANICAL ENGINEERING(기계공학부) > Articles
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