木質材料の小形チャンバー法の測定結果を用いた実大空間におけるアセトアルデヒド気中濃度予測  [in Japanese] Estimate of Acetaldehyde Concentration in a Full-scale Testing Room Based on the Emission Factors of Wood-based Materials Obtained Using the Small Chamber Method  [in Japanese]

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Abstract

<p>木質材料のアセトアルデヒド放散速度の経時変化を小形チャンバー法によって測定した結果から,実大空間における気中濃度の推移を予測する手法について検討を行った。実大空間での気中濃度予測には,試料負荷率の影響を把握しなければならないため,まず,木質材料の試料負荷率とアセトアルデヒド気中濃度との関係について小形チャンバー法を用いて調べた。次に実大の試験室に内装材を設置して気中濃度の経時変化を測定した。木質材料から放散するアセトアルデヒドの気中濃度は,換気量一定の条件下では試料負荷率と比例の関係にあることが明らかになった。実大空間内の気中濃度を予測するため,物質収支式と放散速度の減衰モデルから得られた実大空間内の気中濃度の経時変化を表す数理モデルを導入した。この数理モデルと小形チャンバー法によって得たパラメータを用いた推定値は,実際の室内のアセトアルデヒド気中濃度の経時変化とおおよそ一致した。 </p>

<p>A numerical model of indoor air concentration, which was calculated from the mass balance of the testing room and time-emission-factor relationships obtained by the small chamber method, was studied. To predict concentrations in environments with different loading factors, the relationship between acetaldehyde concentration and loading factors was also studied. Acetaldehyde emissions from plywood, particleboard, and MDF (medium density fiberboard) were measured using the 20-L small chamber method with several loading factors. Emission factors of wood-based interior materials such as plywood, LVL (laminated veneer lumber), composite flooring, and wallpaper-covered plywood were measured in both small chambers and a full-scale testing room. Under a constant ventilation rate, acetaldehyde concentration was proportional to loading factors but emission factors were independent of loading factors. The acetaldehyde concentration model for the testing room was based on parameters acquired from the small chamber measurements. Predicted values were in accordance with measured values in the testing room.</p>

Journal

  • Mokuzai Gakkaishi

    Mokuzai Gakkaishi 62(6), 317-324, 2016

    The Japan Wood Research Society

Codes

  • NII Article ID (NAID)
    130005170574
  • NII NACSIS-CAT ID (NCID)
    AN00240329
  • Text Lang
    JPN
  • ISSN
    0021-4795
  • NDL Article ID
    027759647
  • NDL Call No.
    Z17-484
  • Data Source
    NDL  J-STAGE 
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