Viscosity measurements and correlations of binary mixtures: 1,1,1,2-tetrafluoroethane (HFC-134a)+tetraethylene glycol dimethylether (TEGDME)

Matias Alfonso Monsalvo, A. Baylaucq, P. Reghem, Sergio Cisneros, C. Boned

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

This paper reports viscosity data for the binary system 1, 1, 1,2-tetrafluoroethane (HFC-134a), x(1), +tetraethylene glycol dimethylether (TEGDME), 1 - x(1). The measurements (200 data points) were obtained at various pressures (between 10 and 100 MPa) in the homogeneous liquid state from T= 293.15-373.15 K. The measurements have been carried out with a failing body viscometer for four molar fractions x(1) =(0.28, 0.44, 0.63 and 0.88). The density values of this system were interpolated from previous results obtained at the laboratory. All of the available viscosity data, including pure HFC-134a and pure TEGDME (both previously studied at the laboratory), have been correlated using several viscosity models (mixing rules, self-refrencing model, hard-sphere theory, friction theory and free volume model). The resulting models are presented and discussed in this work. (c) 2005 Elsevier B.V. All rights reserved.
Original languageEnglish
JournalFluid Phase Equilibria
Volume233
Issue number1
Pages (from-to)1-8
ISSN0378-3812
DOIs
Publication statusPublished - 2005

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