Koichi Watanabe, Yukihiro Higashi

Research output: Contribution to journalConference articlepeer-review


This paper presents an overview of the thermophysical properties of nonazeotropic refrigerant blends (NARBs) which have been considered prospective especially for the advanced vapor-compression heat pump systems. After introducing some general backgrounds on the thermodynamic behaviors of NARBs, the current state of the art for the thermophysical properties research on NARBs is reviewed. The emphasis, however, is given not only to the systematic studies of thermodynamic properties of NARBs by the group of the present authors at Keio University, Yokohama, but also to the experimental results of non-equilibrium properties recently published in Japan. The paper concludes the importance of thermophysical properties research on refrigerant mixtures under the extended ranges of parameters so as to provide more accurate and concrete criteria to the selection of the optimum blend for various industrial applications.

Original languageEnglish
JournalAmerican Society of Mechanical Engineers (Paper)
Publication statusPublished - 1986
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering


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