Chia Nan University of Pharmacy & Science Institutional Repository:Item 310902800/22248
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    標題: Aerosol Penetration Properties of An Electret Filter with Submicron Aerosols with Various Operating Factors
    作者: Shinhao Yang
    Whei-May G. Lee
    Hsiao-Lin Huang
    Yi-Chin Huang
    Chin-Hsiang Luo
    Chih-Cheng Wu
    Kuo-Pin Yu
    貢獻者: 職業安全衛生系
    關鍵字: Aerosol penetration
    Electret filter
    Aerosol charge state
    Surface charge
    日期: 2007-01
    上傳時間: 2010-01-15 11:25:02 (UTC+8)
    摘要: This study was undertaken to determine the effects of using an electret filter on aerosol penetration. Various factors, including particle size (0.05 to 0.5 micro m), aerosol charge state (neutral and single charge), face velocity (0.1, 0.3, 0.5 and 1.0 m/s), and relative humidity (RH 30% and RH 70%), were examined to assess their effects on aerosol collection characteristics. The results presented here demonstrate that the electric fields of the electret and discharged filter were -1.53 x 104 and -1.3 x 102 (V/m). The penetration through the electret filter with singly charged aerosol and neutral aerosol ranged from 0.4% to 13% and 14% to 29%, respectively. According to these results, the coulombic capture force was dominant for the smaller aerosol and the dielectrophoretic capture mechanism was considered important for the larger aerosol. The level of penetration through the electret filter increased with increasing face velocity and relative humidity. The temperature did not affect the penetration through the electret. Furthermore, from the regression analysis conducted during the operating conditions of this work, the aerosol charge was shown to exert the greatest influence on aerosol penetration.
    關聯: Journal of Environmental Science and Health Part A 42(1): p.51-57
    显示于类别:[職業安全衛生系(含防災所)] 期刊論文

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