Viscosity Measurements and Correlations for 1,1,1,2-tetrafluoroethane (HFC-134a) up to 140 MPa

M.J.P. Comuñas, A. Baylaucq, Sergio Cisneros, Claus Kjær Zeberg-Mikkelsen, C. Boned, Josefa Fernàndez

Research output: Contribution to journalConference articleResearchpeer-review

Abstract

In spite of being one of the most studied refrigerants, large discrepancies in the experimental determination of the dynamic viscosity of 1, 1, 1,2-tetrafluoroethane (HFC-134a) prevail. Additionally, there is a need for supplementary high-pressure measurements that can help to derive sound general correlations for the viscosity of this compound. Hence, in this work new dynamic viscosity measurements for HFC-134a using a falling-body viscometer in the temperature range of 293.15-373.15 K and pressures up to 140 MPa are presented. This work high-pressure data in combination with already published data provide dynamic viscosity information for the HFC-134a on wide ranges of temperature and pressure. Thus, based on selected HFC-134a viscosity measurements, a representative viscosity model has been correlated using the friction theory (f-theory) in combination with a BWR type of equation of state (EoS). In spite of the discrepancies found in the different data sources, the derived model delivers a reasonably good performance resulting in absolute average deviations around 2%. The derived correlation presented in this work apply to both the liquid and the vapor phases on a temperature range of 200-450 K and for pressures up to 140 MPa. (C) 2003 Elsevier Science B.V. All rights reserved.
Original languageEnglish
JournalFluid Phase Equilibria
Volume210
Issue number1
Pages (from-to)21-32
ISSN0378-3812
DOIs
Publication statusPublished - 2003
Event3rd Workshop on Thermochemical Thermodynamic and Transport Properties of Halogenated Hydrocarbons and Mixtures - Rostock, Germany
Duration: 28 Jul 20022 Aug 2002

Conference

Conference3rd Workshop on Thermochemical Thermodynamic and Transport Properties of Halogenated Hydrocarbons and Mixtures
CountryGermany
CityRostock
Period28/07/200202/08/2002

Keywords

  • Viscosity
  • Measurements
  • Correlation
  • 1,1,1,2-Tetrafluroethane
  • HFC-134a
  • Refrigerant
  • Pressure

Cite this

Comuñas, M. J. P., Baylaucq, A., Cisneros, S., Zeberg-Mikkelsen, C. K., Boned, C., & Fernàndez, J. (2003). Viscosity Measurements and Correlations for 1,1,1,2-tetrafluoroethane (HFC-134a) up to 140 MPa. Fluid Phase Equilibria, 210(1), 21-32. https://doi.org/10.1016/S03780-3812(03)00158-4