冷媒の液膜流沸騰熱伝達に及ぼす混入油の影響に関する研究 Influence of Oil on Boiling Heat Transfer for Film Flow of Refrigerant Liquid

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Boiling heat transfer coefficient was measured for refrigerant liquid with oil contained. The liquid flowed in film on a horizontal heating surface with the vapor flowing in the upper part of a rectangular duct at different liquid flow rates, vapor flow rates, heat fluxes and oil mass fractions. Whenever the refrigerant contained the oil, the flow with foaming action was observed. The heat transfer coefficient was always decreased with increasing oil mass fraction. In order to investigate the influence of oil on the heat transfer, a dimensional correlation of the heat transfer coefficient was tentatively developed, as the sum of contributions by nucleate boiling and forced convection to the heat transfer. Based on this correlation, it was found that the reduction of the heat transfer coefficient with increasing oil mass fraction, especially until the oil mass fraction up to 20 percent, was attributed mainly to the rapid reduction of contribution by the nucleate boiling, and that the ratio of the heat transfer rate by the nucleate boiling to the total rate was decreased as the oil mass fraction was increased, because of much less reduction of the heat transfer rate by the forced convection

収録刊行物

  • 日本冷凍協会論文集  

    日本冷凍協会論文集 13(2), 199-205, 1996-07-31 

    Japan Society of Refrigerating and Air Conditioning Engineers

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各種コード

  • NII論文ID(NAID)
    10002713690
  • NII書誌ID(NCID)
    AN10035654
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    09100040
  • NDL 記事登録ID
    4020806
  • NDL 雑誌分類
    ZN14(科学技術--機械工学・工業--熱機関)
  • NDL 請求記号
    Z16-1394
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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