Measurements of the surface tension for the R290 + R600a mixtures

Katsuyuki Tanaka, Yukihiro Higashi

Research output: Contribution to conferencePaperpeer-review

Abstract

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.

Original languageEnglish
Publication statusPublished - Jan 1 2006
Externally publishedYes
Event3rd Asian Conference on Refrigeration and Air-Conditioning, ACRA 2006 - Gyeongju, Korea, Republic of
Duration: May 21 2006May 23 2006

Other

Other3rd Asian Conference on Refrigeration and Air-Conditioning, ACRA 2006
Country/TerritoryKorea, Republic of
CityGyeongju
Period5/21/065/23/06

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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