Park, Jae Hong; Yoon, Ki Young; Noh, Kwang Chul; Byeon, Jeong Hoon; Hwang, Jungho
Removal of PM2.5 entering through the ventilation duct in an automobile using a carbon fiber ionizer-assisted cabin air filter
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  • Journal of aerosol science, October 2010, Vol.41(10), pp.935-943
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This study evaluated the charging characteristics of a carbon fiber ionizer for PM2.5 and carried out particle capture laboratory tests after an ionizer was installed upstream of the media of an electret cabin air filter. When the ion concentration per particle (Ni) of the carbon fiber charger was 106ions/cm3, the average charge numbers for each particle were 1.54, 0.88, and 0.49 at 0.6, 1.2, and 1.8m/s of face velocity, respectively (the particle charging times, τ, were 167, 83, and 56ms, respectively). For these face velocities, the PM2.5 removal efficiencies of the filter media were 69.3%, 65.2% and 62.2%, respectively, but increased to 80.4%, 71.2% and 65.5%, respectively, when the ionizer was turned on. The carbon fiber ionizer was then installed in front of an electret cabin filter in the air conditioning system of an automobile, after which field tests were performed at a roadside area. For the same Niτ used in the lab-scale tests, the effects of the carbon fiber ionizer...
ISSN: 0021-8502
ISSN: 1879-1964
DOI: 10.1016/j.jaerosci.2010.07.005

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