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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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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
Subjects:	Applied sciences Density (specific gravity) Energy Energy. Thermal use of fuels Equations of state Exact sciences and technology Fluorocarbons High pressure effects Molecular structure Refrigerants Refrigerating engineering Refrigerating engineering. Cryogenics. Food conservation Temperature Vapor pressure Viscometers Viscosity measurement
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container_title	International journal of thermophysics
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creator	TAKAHASHI, M SHIBASAKI-KITAKAWA, N YOKOYAMA, C
description	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.
doi_str_mv	10.1023/A:1022648819511
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subjects	Applied sciences Density (specific gravity) Energy Energy. Thermal use of fuels Equations of state Exact sciences and technology Fluorocarbons High pressure effects Molecular structure Refrigerants Refrigerating engineering Refrigerating engineering. Cryogenics. Food conservation Temperature Vapor pressure Viscometers Viscosity measurement
title	Viscosity of gaseous HFC-125 (pentafluoroethane) under high pressures
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