Forced Convective Boiling of Nonazeotropic Refrigerant Mixtures of R22 and R114 Inside a Horizontal Tube

Akio Miyara, Hiroshi Takamatsu, Shigeru Koyama, Kazuo Yonemoto, Tetsu Fujii

研究成果: Contribution to journalArticle査読

5 被引用数 (Scopus)

抄録

Experimental results of forced convective boiling of nonazeotropic refrigerant mixtures of R22 and R114 inside a horizontal tube with internal spiral grooves are presented. Pure refrigerants R22 and R114 and three kinds of their mixtures containing about 25, 50 and 75 mol%R114 are tested in the ranges of mass velocity of 77 to 347 kg/(m2s) and of pressure of 0.6 to 7 bar. The axial distributions of refrigerant temperature and heat transfer coefficient for mixed refrigerants depend on the concentration, while those for pure refrigerants of R22 and R114 show similar behavior. An empirical correlation concerning the heat transfer coefficient of pure and mixed refrigerants is proposed as a function of the boiling number, Lockhart-Martinelli parameter and liquid heat transfer coefficient for a smooth tube.

本文言語英語
ページ(範囲)2523-2528
ページ数6
ジャーナルTransactions of the Japan Society of Mechanical Engineers Series B
54
505
DOI
出版ステータス出版済み - 1988

All Science Journal Classification (ASJC) codes

  • 凝縮系物理学
  • 機械工学

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