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Surface tension of pentafluoroethane (HFC-125)

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Abstract

A set of accurate surface-tension data for HFC-125 has been obtained experimentally with both an absolute capillary rise technique and a differential capillary rise technique in the temperature range of 233.15–333.15 K. The purity of the experimental HFC-125 sample is 99.98 wt%. The two sets of experimental results with an absolute capillary rise method agree well with each other and, also, with the experimental results with a differential capillary rise method. The absolute deviations of experimental results with these two methods are within 0.01 mN · m−1. The relative deviation are within 0.2%. A van der Waals surface-tension correlation is also proposed.

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Authors and Affiliations

  1. Department of Thermal Engineering, Tsinghua University, 100084, Bei**g, P.R. China

    M. F. Liu, L. Z. Han & M. S. Zhu

Authors
  1. M. F. Liu
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  2. L. Z. Han
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  3. M. S. Zhu
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Liu, M.F., Han, L.Z. & Zhu, M.S. Surface tension of pentafluoroethane (HFC-125). Int J Thermophys 15, 941–948 (1994). https://doi.org/10.1007/BF01447104

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  • DOI: https://doi.org/10.1007/BF01447104

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