水平平滑管内における二成分混合冷媒の凝縮特性の予測計算法

小山 繁, 石橋 晃, 兪 堅

研究成果: Contribution to journalArticle査読

抄録

In the present study, a prediction model for condensation of binary refrigerant mixtures inside a horizontal smooth tube is proposed. In this model it is assumed that the phase equilibrium is only established at the vapor liquid interface, while the bulk vapor and the bulk liquid are in a nonequilibrium state. The predicted results are compared with the experimental ones for the condensation of IIFC134a/HCFC123 mixtures ; in the experiment, the bulk mass fraction of HFC134a ranged from 0.35 to 0.85 kg/kg, and the mass velocity of 120 to 300 kg/(m^2s). Since the mass transfer characteristics in the vapor core are assumed to be expressed as Sh_v=0.046 Re^<0.8>_vSc^<0.3>_v, the predicted heat flux distribution along the tube axis is in good agreement with that of the experiment. The mass transfer characteristics during the condensation, determined by the prediction calculation, are also presented.
寄稿の翻訳タイトルPrediction Model for Condensation of Binary Refrigerant Mixtures inside a Horizontal Smooth Tube
本文言語日本語
ページ(範囲)3033-3040
ページ数8
ジャーナルNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
63
613
出版ステータス出版済み - 9 25 1997
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