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Viscosity of gaseous HFC-125 (pentafluoroethane) under high pressures

This paper reports experimental results for the viscosity of gaseous HFC-125 (pentafluoroethane) under high pressures. The measurements were carried out with an oscillating-disk viscometer of the Maxwell type at temperatures from 298.15 to 423.15 K and at pressures up to the saturated vapor pressure...

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Bibliographic Details
Published in:International journal of thermophysics 1999-03, Vol.20 (2), p.445-453
Main Authors: TAKAHASHI, M, SHIBASAKI-KITAKAWA, N, YOKOYAMA, C
Format: Article
Language:English
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Summary:This paper reports experimental results for the viscosity of gaseous HFC-125 (pentafluoroethane) under high pressures. The measurements were carried out with an oscillating-disk viscometer of the Maxwell type at temperatures from 298.15 to 423.15 K and at pressures up to the saturated vapor pressures at each temperature at subcritical conditions or up to 9 MPa at supercritical temperatures. Intermolecular scaling parameters of HFC-125 for the extended corresponding states were determined from the viscosity data at 0.1 MPa. An empirical viscosity equation is proposed to interpolate the present experimental results as a function of temperature and density.
ISSN:0195-928X
1572-9567
DOI:10.1023/A:1022648819511