Measurements of PρT properties, vapor pressures, saturated densities, and critical parameters for R 1234ze(Z) and R 245fa

Yukihiro Higashi, Shugo Hayasaka, Chihiro Shirai, Ryo Akasaka

研究成果: Contribution to journalArticle

36 引用 (Scopus)

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Abstract Pressure-density-temperature (PρT) properties, vapor pressures, and saturated liquid and vapor densities for refrigerants R 1234ze(Z) (cis-1,3,3,3-tetrafluoroprop-1-ene; CF3CHCHF) and R 245fa (1,1,1,3,3-pentafluoropropane; C3H3F5) were measured with two types of isochoric methods. Pressure was measured with a digital quartz pressure transducer. Temperature was measured with 25 Ω standard platinum resistance thermometer on the ITS-90 temperature scale. Density was calculated from the mass of sample and the inner volume of pressure vessel. By using the present vapor pressure data, new vapor pressure correlations for R 1234ze(Z) and R 245fa have been formulated. In addition, the critical temperature Tc, critical density ρc, and critical pressure Pc were directly determined on the basis of direct observation of the meniscus disappearance.

元の言語英語
記事番号2937
ページ(範囲)100-108
ページ数9
ジャーナルInternational Journal of Refrigeration
52
DOI
出版物ステータス出版済み - 5 2015
外部発表Yes

All Science Journal Classification (ASJC) codes

  • Building and Construction
  • Mechanical Engineering

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