Experimental Study of Frost Phenomena on Metal Fin-shaped Plate in Forced Convection Condition

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  • YOSHIDA Kenji
    Department of Mechanical Engineering, Graduate School of Engineering, Osaka University
  • KATAOKA Isao
    Department of Mechanical Engineering, Graduate School of Engineering, Osaka University

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Other Title
  • 強制対流中の金属フィン上の着霜現象に関する実験研究
  • キョウセイ タイリュウ チュウ ノ キンゾク フィン ジョウ ノ チャクソウ ゲンショウ ニ カンスル ジッケン ケンキュウ

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Abstract

Experimental study on frost phenomena on metal fin-shaped plate in forced convection was carried out. The humidity and temperature of supplied air flow were controlled by using the bubbling system and the constant temperature water bath, respectively. The air flow velocity and humidity were changed as the experimental condition. Direct observation using two video cameras during the frosting and defrosting was performed. The temperature measurements on fin-shaped plate by thermo couples attached by spot welding on the fin-plate were also carried out. The effects of the humidity and the flow velocity on the frosting and defrosting characteristics were discussed concerning the heat and mass transfer during the air flow and fin-shaped plate.

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