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Measurements of the surface tension for the R-290/R-600a mixtures.

Author(s) : TANAKA K., HIGASHI Y.

Summary

The surface tension of the R-290/R-600a 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 temperatures and surface tension measurements are estimated. As for composition dependence, the data show different behaviours against REFPROP ver. 7.0 calculations. Three kinds of mixing rules were tested for representing the composition dependence of the data. It is found that the simple rule by mole fraction is effective for the R-290/R-600a mixture.

Details

  • Original title: Measurements of the surface tension for the R-290/R-600a mixtures.
  • Record ID : 2007-0529
  • Languages: English
  • Source: ACRA-2006. Proceedings of the 3rd Asian conference on refrigeration and air conditioning.
  • Publication date: 2006/05/21

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