Measurements of saturated densities and critical parameters for the binary mixture of 2,3,3,3-tetrafluoropropene (R-1234yf) + difluoromethane (R-32)

Ryo Akasaka, Katsuyuki Tanaka, Yukihiro Higashi

研究成果: Contribution to journalArticle査読

23 被引用数 (Scopus)

抄録

The vapor-liquid coexistence curves near the critical point of the binary mixture of 2,3,3,3-tetrafluoropropene (R-1234yf) + difluoromethane (R-32) were measured by means of the visual observation of meniscus disappearance. Eleven, eighteen, and eleven saturated densities were obtained for mixtures with 50.00 mass%, 80.01 mass%, and 90.00 mass% of R-1234yf, respectively. The critical temperatures, critical densities, and critical molar volumes of the mixtures were determined from the meniscus disappearing level and the intensity of the critical opalescence. The critical pressures of the mixtures were also determined from the analysis of pρTx measurements. The composition dependence of the critical parameters was formulated with simple correlations.

本文言語英語
ページ(範囲)1341-1346
ページ数6
ジャーナルInternational Journal of Refrigeration
36
4
DOI
出版ステータス出版済み - 6 2013
外部発表はい

All Science Journal Classification (ASJC) codes

  • Building and Construction
  • Mechanical Engineering

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