冷媒R1234ze(E)およびR32 の水平扁平多孔管内 沸騰・蒸発熱伝達および圧力損失

Translated title of the contribution: Boiling Heat Transfer and Pressure Drop of R1234ze(E) and R32 in a Multi-Port Tube

地下 大輔, 小宮 佑太, 近藤 智恵子, 小山 繁

    Research output: Contribution to journalArticlepeer-review

    Abstract

    In this study, the flow boiling heat transfer and pressure drop characteristics of R1234ze(E) and R32 in a horizontal multi-port tube with rectangular mini-channels of 1.13 mm in mean hydraulic diameter are investigated experimentally. The heat transfer and pressure drop characteristics are measured for the boiling flow in the mass velocity range of 100 to 400 kg/(m<sup>2 </sup>s) and heat flux range of 5 to 20 kW/m<sup>2</sup>. The pressure drop characteristics are also measured for adiabatic two-phase flow. The effects of mass velocity, vapor quality and heat flux on the boiling heat transfer characteristics are clarified. The measured frictional pressure drop and boiling heat transfer characteristics of R1234ze(E) and R32 are compared with previous correlations.
    Translated title of the contributionBoiling Heat Transfer and Pressure Drop of R1234ze(E) and R32 in a Multi-Port Tube
    Original languageJapanese
    Pages (from-to)57-65
    Number of pages9
    Journal日本冷凍空調学会論文集
    Volume31
    Issue number2
    DOIs
    Publication statusPublished - 2014

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