Comparative assessment of heat pump cycle operated with R32/R1234ze(E) and R32/R1234yf mixtures

Hideki Kojima, Sho Fukuda, Chieko Kondou, Nobuo Takata, Shigeru Koyama

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

    2 引用 (Scopus)

    抜粋

    This study measures the COPs of R32/R1234ze(E) and R32/R1234yf with GWPs of approximately 285 and 190 with a vapour compression cycle under two heating modes, where the heat sink water change temperature 10 K and 25 K. At a temperature change of 10 K, the COPs of mixtures are significantly lower than that of R410A. At a temperature change of 25 K, the COPs of mixtures are generally comparable to that of R410A. When the temperature change in heat sink fluid is large, the larger temperature glide of the combination R32/R1234e(E) is somewhat advantageous to reduce the irreversible loss in condenser. The smaller volumetric capacity of refrigerant mixture significantly increases the volumetric flow rate and the irreversible loss in the compressor at higher heating loads. The pinch point of R410A appeared in the condenser caused excess pressure rising and increased compressor loss at a temperature change of 25 K.

    元の言語英語
    ホスト出版物のタイトル24th IIR International Congress of Refrigeration, ICR 2015
    出版者International Institute of Refrigeration
    ページ2449-2456
    ページ数8
    ISBN(電子版)9782362150128
    DOI
    出版物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(印刷物)0151-1637

    その他

    その他24th IIR International Congress of Refrigeration, ICR 2015
    日本
    Yokohama
    期間8/16/158/22/15

    All Science Journal Classification (ASJC) codes

    • Control and Systems Engineering
    • Electrical and Electronic Engineering
    • Mechanical Engineering
    • Condensed Matter Physics

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  • これを引用

    Kojima, H., Fukuda, S., Kondou, C., Takata, N., & Koyama, S. (2015). Comparative assessment of heat pump cycle operated with R32/R1234ze(E) and R32/R1234yf mixtures. : 24th IIR International Congress of Refrigeration, ICR 2015 (pp. 2449-2456). (Refrigeration Science and Technology). International Institute of Refrigeration. https://doi.org/10.18462/iir.icr.2015.0221