Measurements of the surface tension for the R290 + R600a mixtures

Katsuyuki Tanaka, Yukihiro Higashi

研究成果: Contribution to conferencePaper査読

抄録

The surface tension of the R290 + R600a mixture has been measured by the differential capillary-rise method. For measuring the binary system, the apparatus was modified to determine the composition of the sample. Seventeen data with a change of composition were obtained at 278.28 K. The experimental uncertainties of temperature and surface tension measurements are estimated to be within 20 mK and 0.2 mN·m-1, respectively. The present data are compared with REFPROP ver.7.0 calculations [1]. As for composition dependence, the present data show different behavior against to REFPROP ver.7.0 calculations. Three kinds of mixing rules were tested for representing the composition dependence of the present data. It is found the simple mixing rule by mole fraction is effective for the R290 + R600a mixture.

本文言語英語
出版ステータス出版済み - 1 1 2006
外部発表はい
イベント3rd Asian Conference on Refrigeration and Air-Conditioning, ACRA 2006 - Gyeongju, 大韓民国
継続期間: 5 21 20065 23 2006

その他

その他3rd Asian Conference on Refrigeration and Air-Conditioning, ACRA 2006
国/地域大韓民国
CityGyeongju
Period5/21/065/23/06

All Science Journal Classification (ASJC) codes

  • 電子工学および電気工学

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