The Behavior of a Single Drop on the Vibrating Vertical Plate in the Gravity Direction

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  • 重力方向に振動する鉛直平板上の単一滴の挙動
  • ジュウリョク ホウコウ ニ シンドウ スル エンチョク ヘイバン ジョウ ノ タンイツテキ ノ キョドウ

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Abstract

Recently, the development of the high-performance heat exchanger is desired from the viewpoint of energy saving and resource conservation. The application to the heat exchanger of dropwise condensation phenomenon which shows high heat transfer performance is desired. However, the relationship between behavior of the condensate drop and heat transfer on the wide heating surface in dropwise condensation has not been clarified. In this study, the behavior of a single water droplet on the vertical plate which vibrates for the purpose of the analysis of dropwise condensation phenomenon on vibration heating surface in the gravity direction is examined. As a result, it was possible to obtain the falling limitative drop size of an adhesion drop and the velocity of a falling drop, etc. by experiment and calculation. And, the possibility of attaining the heat transfer enhancement by the excitation was shown.

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