純冷媒の水平内面溝付管内強制対流沸騰熱伝達の整理式作成の試み

• 桃木 悟

  長崎大学工学部

• 兪 堅

  九州大学大学院総合理工学研究科

• 小山 繁

  九州大学機能物質科学研究所

• 藤井 哲

  東亜大学大学院

• 本田 博司

  九州大学機能物質科学研究所

書誌事項

タイトル別名

• A Correlation for Forced Convective Boiling Heat Transfer of Refrigerants in a Microfin Tube

抄録

The experimental study is reported on the forced convective boiling of pure refrigerants HCFC22, HFC134a and HCFC123 flowing in a horizontal microfin tube. The local heat transfer coefficient defined based on the actual inside surface area is measured in the ranges of mass velocity of 200 to 400 kg/m²s, heat flux of 5 to 64 kW/m² and reduced pressure of 0.07 to 0.24. Using the Chen-type model, a new correlation for microfin tubes is proposed considering the enhancement effect of microfins on both the convective heat transfer and the nucleate boiling components. In the convective heat transfer component, the correlation to predict the heat transfer coefficient of liquid-only flow is determined from preliminary experiments on single-phase flow in microfin tubes, and the two-phase flow enhancement factor is determined from the present experimental data. For the nucleate boiling component, the correlation of Takamatsu et al. for smooth tube is modified. The prediction of the present correlation agrees well with present experimental data, and is available for several microfin tubes which were tested by other researchers.

収録刊行物

• 日本冷凍空調学会論文集

  日本冷凍空調学会論文集 12 (2), 177-184, 1995

  公益社団法人 日本冷凍空調学会

キーワード

• Convective Boiling
• Microfin Tube
• Heat Transfer Coefficient
• Correlation
• Refrigerants

詳細情報

• CRID: 1390001204667456128
• NII論文ID: 10002713302
• NII書誌ID: AN10035654
• DOI: 10.11322/tjsrae.12.177
• ISSN: 2185789X
• ISSN: 13444905
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可