Particle and Aerosol Research Vol. 5, No. 2, June 2009 |
ISSN : 1738-8716 (Print) ISSN : 2287-8130 (Online) |
Numerical and experimental study on the pressure dorp of axial-flow cyclone in the air handling unit
Soon-Bark Kwon*, Duck-Shin Park, Youngmin Cho, Se-Young Kim1), Myeoung-Joon Kim1), Hojoong Kim2) and Taesung Kim1),2)
Abstracts
Particulate matter (PM) is one of the major indoor air pollutants especially in the subway station in Korea. In order
to remove PM in the subway station, several kinds of PM removal system such as roll-filter, auto-washable air
filter, demister, and electrostatic precipitator are used in the air handling unit (AHU) of subway stations. However,
those systems are prone to operation and maintenance problems since the filter-regeneration unit consisting of electrical
or water jet parts might malfunction due to the high load of particulates unless the filter medium is periodically
replaced. In this study, the use of axial-flow cyclone was proposed for particulate filter unit in the AHU for its low
operation and maintenance cost. Novel shape of axial-flow cyclone was designed by using computational fluid dynamics
(CFD). The shape of vortex vane was optimized in terms of pressure drop and tangential velocity. In addition,
CFD analysis was validated experimentally through the pressure drop measurement of mock-up model. We found
that pressure drop and tangential velocity of fluid through the axia-flow cyclone was significantly affected by the
rotating degree of vortex vane and the numerical prediction of pressure drop agreed well with experimental measurement.
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