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- Title
Effect of horizontal inlet on slit-nozzle virtual impactor performance.
- Authors
Heo, Ji-Eun; Zahir, Muhammad Zeeshan; Park, Hyunjin; Seo, Jeonghyun; Park, Hyeongjun; Yook, Se-Jin
- Abstract
We observed variations in collection efficiency and wall loss in a virtual impactor by applying a horizontal inlet. A parametric study on the dimensions of the horizontal inlet was conducted to determine the shape that could maximize the collection efficiency and minimize the wall loss. As a conventional vertical inlet was replaced by a horizontal inlet, the PM2.5 virtual impactor decreased the cut-off size by 17 % from 2.5 μm to 2.08 μm while the PM10 virtual impactor decreased the cut-off size by 22 % from 10 μm to 7.8 μm. The application of a horizontal inlet significantly reduced the wall loss for a particle size corresponding to a particular cut-off size, overcoming the problem with the existing virtual impactor.
- Subjects
MICROBIOLOGICAL aerosols; NUMERICAL analysis; ACCELERATION (Mechanics); REYNOLDS number; COMPUTATIONAL fluid dynamics
- Publication
Journal of Mechanical Science & Technology, 2018, Vol 32, Issue 5, p2419
- ISSN
1738-494X
- Publication type
Article
- DOI
10.1007/s12206-018-0454-8