IIR document

Surface tension measurement of low gwp refrigerants.

Number: pap. TP-071

Author(s) : MATSUZONO T., KONDOU C., HIGASHI Y., et al.


HFOs (hydro-fluoro-olefins) are very recently under consideration as a potential candidate of R410A alternatives with GWP of 2800 that is most widely used in air-conditioning and refrigeration systems. The capillary constant and surface tension of R32, R1234ze(E), and their binary mixture R32/R1234ze(E) are measured in the temperature range from 274 K to 342 K by the differential capillary rise method. The propagated uncertainty in the surface tension is estimated within 0.3 mN m-1. The experimentally quantified surface tensions of the components R32 and R1234ze(E) well agree with the calculated value by REFPROP 9.1. The measured surface tension of R32/R1234ze(E) at charged compositions 51/49 mass% and 43/57 mass% reasonably agree with the correlation for R32/R1234ze(E) (50/50 mass%) proposed by Tanaka and Higashi [1]. The surface tension data presented in this study and available in literatures (Tanaka and Higashi [1]; Cui et al. [2]) appear to vary almost linearly against mole fraction at a fixed reduced temperature.

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  • Original title: Surface tension measurement of low gwp refrigerants.
  • Record ID : 30021501
  • Languages: English
  • Source: 5th IIR Conference on Thermophysical Properties and Transfer Processes of Refrigerants.
  • Publication date: 2017/04/23
  • DOI: http://dx.doi.org/10.18462/iir.tptpr.2017.0071


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