Theoretical Analysis for Laminar Film Condensation of Pure Refrigerant in a Finned Vertical Rectangular Channel

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  • MATSUMOTO Tatsuya
    Department of Applied Quantum Physics and Nuclear Engineering,Graduate School of Engineering, Kyushu University
  • KOYAMA Shigeru
    Department of Energy and Material Sciences,Interdisciplinary Graduate School of Engineering Science, Kyushu University

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  • フィン付き鉛直矩形流路内での純冷媒の層流膜状凝縮に関する理論解析
  • フィン ツキ エンチョク クケイ リュウロ ナイ デ ノ ジュンレイバイ ノ ソウリュウ マクジョウ ギョウシュク ニ カンスル リロン カイセキ

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Abstract

In the present study, a theoretical analysis for the laminar film condensation in a finned vertical rectangular channel is carried out to clarify the heat transfer characteristics of plate-fin condensers. In the analysis the following assumptions are employed. The bulk vapor is pure and saturated, and the effect of viscous shear of vapor on the liquid film is negligible. The heat conduction in the fin is one-dimensional, and the base surface temperature is a constant. The local characteristics of liquid film shape and fin temperature are examined, and a heat transfer correlation including the effects of fin shape parameters is proposed.

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