液体状粒子負荷試験におけるHEPAフィルタ性能の経時変化 Time Dependency of HEPA Filter Performance during Loading with Liquid Particles

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The time dependency of filter performance across a high-efficiency particulate air (HEPA) filter was experimentally studied. The experimental study was carried out using a HEPA filter (203×203×150mm) clogged with liquid particles (mosquito stick aerosol). The aerosol concentration for filter loading was 0.84mg/m<sup>3</sup> and the size distribution was similar to lognormal distribution (CMD=0.21μm, δg=1.65). The mass loading was about 60g/m<sup>2</sup> when the pressure drop across the HEPA filter reached twice the initial pressure drop. The DOP particle penetrations through the HEPA filter were evaluated when relative pressure drops (Δ<i>P</i>/Δ<i>P</i><sub>0</sub>) were nearly 1.0, 1.3, 1.4, 1.6, 1.8 and 2.1. The most penetrating particle size (MPPS) was almost independent of the mass loading if the face velocity was constant. However, the DOP particle penetration increased remarkably with mass loading, and the tendency of increase was not affected by particle size or face velocity.

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  • 保健物理 : hoken buturi  

    保健物理 : hoken buturi 32(2), 185-191, 1997-06-30 

    Japan Health Physics Society

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各種コード

  • NII論文ID(NAID)
    10002136506
  • NII書誌ID(NCID)
    AN00228458
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    03676110
  • NDL 記事登録ID
    4247999
  • NDL 雑誌分類
    ZN36(科学技術--原子力工学・工業) // ZS45(科学技術--医学--放射線医学)
  • NDL 請求記号
    Z16-696
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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