繊維層フィルタのピンホールに対する粒子透過モデル A Model of Aerosol Penetration through Fibrous Filters with Pinholes

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著者

    • 山田 裕司 YAMADA Yuji
    • 放射線医学総合研究所内部被ばく研究部 Division of Radiotoxicology, National Institute of Radiological Sciences
    • 小泉 彰 KOIZUMI Akira
    • 放射線医学総合研究所内部被ばく研究部 Division of Radiotoxicology, National Institute of Radiological Sciences

抄録

Aerosol penetrations through fibrous filters with pinholes were studied theoretically and experimentally. An equivalent thin filter layer (ETFL) model assuming a virtual filter layer was proposed to account for penetration through filters with pinholes. From one to thirty pinholes per filter were made on HEPA filter media using columnar pins of 0.195, 0.150 or 0.130 mm in diameter. Aerosol penetration through these filters was measured using monodisperse NaCl aerosols ranging from 0.05 to 0.3 μm in diameter at air flow face velocities of 0.00775, 0.0233 and 0.0698 m/s. Net penetration through the pinholes increased in proportion to the pinhole number and size. But there was no change in pressure drops across the filters. As a result of analysis based on the ETFL model, the layer thickness was estimated to range from 1/5 to 1/12 of the normal filter thickness. The predicted penetration curves were confirmed to agree well with the measured curves.

収録刊行物

  • エアロゾル研究 = Journal of aerosol research

    エアロゾル研究 = Journal of aerosol research 11(1), 35-43, 1996-03-20

    日本エアロゾル学会

参考文献:  8件中 1-8件 を表示

被引用文献:  7件中 1-7件 を表示

各種コード

  • NII論文ID(NAID)
    10002686906
  • NII書誌ID(NCID)
    AN10041511
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    09122834
  • データ提供元
    CJP書誌  CJP引用  J-STAGE 
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