Condensation of Refrigerants HCF C 22, HFC 134a and HCFC 123 in a Horizontal Smooth Tube: (1st Report, Proposals of Empirical Expressions for the Local Frictional Pressure Drop)

Hidetaka Haraguchi, Shigeru Koyama, Tetsu Fujii

    研究成果: Contribution to journalArticle査読

    34 被引用数 (Scopus)

    抄録

    An experimental study of condensation of refrigerants HCFC 22, HFC 134a and HCFC 123 inside a horizontal smooth tube is presented. The test condenser is a double-tube counter-flow type, where the refrigerant flows inside the inner tube and the cooling water flows counter-currently in the outer annulus. The inner tube made of copper is of 6.0 m length and 8.4 mm inner diameter. The measured values for the frictional pressure drop are correlated as (formula omitted), where Øv and Xttare Lockhart-Martinelli parameters, G is the total mass velocity, g is the gravitational acceleration, d is the inner diameter, and ρv and ρlAre the densities of vapor and liquid, respectively. The static pressure drop calculated using this correlation equation agrees with the measured values within the error of 0~ —5%.

    本文言語英語
    ページ(範囲)2111-2116
    ページ数6
    ジャーナルTransactions of the Japan Society of Mechanical Engineers Series B
    60
    574
    DOI
    出版ステータス出版済み - 1994

    All Science Journal Classification (ASJC) codes

    • 凝縮系物理学
    • 機械工学

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