Condensation heat transfer of low gwp refrigerants R1234ze(E), R1234ze(Z) and R1233zd(E) on a horizontal plain tube

Ryuichi Nagata, Chieko Kondou, Shigeru Koyama

    研究成果: Chapter in Book/Report/Conference proceedingConference contribution

    抄録

    In this study, the experimental data on heat transfer coefficient of free convective condensation on a horizontal plain tube are presented for R1234ze(E), R1234ze(Z), R1233zd(E), R134a and R245fa. Condensation experiment is conducted with a copper plain tube of 19.12 mm in outer diameter and 400 mm in the heat transfer length. The experiment covers saturation temperatures from 20 to 60 °C and the degrees of wall subcooling from 0.77 to 28.81 K. The measured Nu of R1234ze(E) and R1234ze(Z) are agree with theoretical Nu equation within a bias of 6%. However, the experimental Nu of R1233zd(E) is biased +25%, on average, to the theoretical Nu. For more accurate HTC prediction, the sufficient transport property data would be needed for R1233zd(E).

    本文言語英語
    ホスト出版物のタイトル24th IIR International Congress of Refrigeration, ICR 2015
    出版社International Institute of Refrigeration
    ページ958-965
    ページ数8
    ISBN(電子版)9782362150128
    DOI
    出版ステータス出版済み - 2015
    イベント24th IIR International Congress of Refrigeration, ICR 2015 - Yokohama, 日本
    継続期間: 8 16 20158 22 2015

    出版物シリーズ

    名前Refrigeration Science and Technology
    ISSN(印刷版)0151-1637

    その他

    その他24th IIR International Congress of Refrigeration, ICR 2015
    国/地域日本
    CityYokohama
    Period8/16/158/22/15

    All Science Journal Classification (ASJC) codes

    • 制御およびシステム工学
    • 電子工学および電気工学
    • 機械工学
    • 凝縮系物理学

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