EFFECT OF COOLED OR HEATED WALL ON VERTICAL DISTRIBUTION OF TEMPERATURE AND CONTAMINANT CONCENTRATION IN ROOMS WITH DISPLACEMENT VENTILATION

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  • XU Ming
    Dept. of Architectural Engineering, Graduate School of Engineering, Osaka Univ.
  • YAMANAKA Toshio
    Dept. of Architectural Engineering, Graduate School of Engineering, Osaka Univ.
  • KOTANI Hisashi
    Dept. of Architectural Engineering, Graduate School of Engineering, Osaka Univ.
  • HIGASHIMOTO Takeaki
    Dept. of Architectural Engineering, Graduate School of Engineering, Osaka Univ.

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  • 置換換気される室内において冷却・加熱壁面が温度及び汚染物濃度の鉛直分布に及ぼす影響
  • チカン カンキ サレル シツナイ ニ オイテ レイキャク カネツ ヘキメン ガ オンド オヨビ オセンブツ ノウド ノ エンチョク ブンプ ニ オヨボス エイキョウ

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Abstract

The purpose of this study is to investigate the effect of cooled or heated wall exposed to outside on the vertical distribution of temperature and contaminant concentration in the room with displacement ventilation. An experimental method and theoretical calculations to estimate these distributions were adopted. As an experiment, the part of the walls of the experimental room with displacement ventilation was cooled or heated. As a result, it is turned out that the air below the contaminant interface is contaminated due to the down-draft along the cooled wall and the profile of concentration can be predicted with rather good accuracy.

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