Development of a high-volume ambient aerosol sampling inlet with an adjustable cutoff size and its performance evaluation using road dust
- Authors
- Lim, Jun-Hyung; Yook, Se-Jin
- Issue Date
- Mar-2022
- Publisher
- ACADEMIC PRESS INC ELSEVIER SCIENCE
- Keywords
- Adjustable cutoff size; Aerosol-sampling inlet; Omnidirectional inlet; PM10; PM2.5; TSP
- Citation
- ENVIRONMENTAL RESEARCH, v.204, pp.1 - 9
- Indexed
- SCIE
SCOPUS
- Journal Title
- ENVIRONMENTAL RESEARCH
- Volume
- 204
- Start Page
- 1
- End Page
- 9
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/139386
- DOI
- 10.1016/j.envres.2021.112302
- ISSN
- 0013-9351
- Abstract
- Aerosol samplers are generally classified into particulate matter (PM2.5 or PM10) and total suspended particle (TSP) samplers. As changing the cutoff size is cumbersome, it necessitates either replacing the particle size separator or adjusting the sampling flow rate. In this study, a novel high-volume aerosol-sampling inlet with an adjustable cutoff size was developed. Its performance was evaluated at a sampling flow rate of 1000 L/min of road dust. The cyclone separator installed with the newly developed inlet absorbed airflow from all directions. The cutoff size of this inlet was easily adjustable using the guide vane angle. For the guide vane angles of 29°, 42°, and 90° (at a 2 km/h freestream velocity), the cutoff sizes were 2.59, 9.92, and 26.2 μm, respectively. At the 90° angle of the guide vanes and the free stream velocity of 2 km/h, no rotational airflow occurred inside the cyclone separator to allow TSP sampling. Increasing the freestream velocity to 16 km/h at angles of 29° and 42° decreased the cutoff size by 0.12 and 0.45 μm, respectively; finely adjusting these angles further reduced the cutoff size to 0.04 and 0.07 μm, respectively. Thus, an almost constant cutoff size was possible. The developed inlet allowed sampling of PM2.5, PM10, or TSP using a single device.
- Files in This Item
-
Go to Link
- Appears in
Collections - 서울 공과대학 > 서울 기계공학부 > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/139386)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.