Viscosity of gaseous mixtures of HFC-125 (pentafluoroethane) + HFC-134a (1,1,1,2-tetrafluoroethane) under pressure

Chiaki Yokoyama; Tomomichi Nishino; Mitsuo Takahashi

doi:10.1016/S0378-3812(00)00430-1

Viscosity of gaseous mixtures of HFC-125 (pentafluoroethane) + HFC-134a (1,1,1,2-tetrafluoroethane) under pressure

Chiaki Yokoyama, Tomomichi Nishino, Mitsuo Takahashi

Division of Inorganic Material Research

Research output: Contribution to journal › Article › peer-review

20 Citations (Scopus)

Abstract

This paper reports experimental results for the viscosity of gaseous mixtures of HFC-125 (pentafluoroethane) + HFC-134a (1,1,1,2-tetrafluoroethane) under pressure. The measurements were carried out with an oscillating-disk viscometer of the Maxwell type at temperatures from 298.15 to 423.15K. The viscosity was measured for three mixtures (mole fraction of HFC-125 is 0.7510, 0.5001 or 0.2508). The viscosity at normal pressure was analyzed with the extended law of corresponding states developed by Kestin et al. and the scaling parameters were obtained for unlike-pair interactions between HFC-125 and HFC-134a. The modified Enskog theory developed by Vesovic and Wakeham was applied to predict the viscosity for the binary gaseous mixtures under pressure.

Original language	English
Pages (from-to)	231-240
Number of pages	10
Journal	Fluid Phase Equilibria
Volume	174
Issue number	1-2
DOIs	https://doi.org/10.1016/S0378-3812(00)00430-1
Publication status	Published - 2000 Sep 25

Keywords

Corresponding states
Enskog theory
HFC-125
HFC-134a
Mixture model
Viscosity

ASJC Scopus subject areas

Chemical Engineering(all)
Physics and Astronomy(all)
Physical and Theoretical Chemistry

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10.1016/S0378-3812(00)00430-1

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@article{b78066b28e3143e8ae641eddbf009fee,

title = "Viscosity of gaseous mixtures of HFC-125 (pentafluoroethane) + HFC-134a (1,1,1,2-tetrafluoroethane) under pressure",

abstract = "This paper reports experimental results for the viscosity of gaseous mixtures of HFC-125 (pentafluoroethane) + HFC-134a (1,1,1,2-tetrafluoroethane) under pressure. The measurements were carried out with an oscillating-disk viscometer of the Maxwell type at temperatures from 298.15 to 423.15K. The viscosity was measured for three mixtures (mole fraction of HFC-125 is 0.7510, 0.5001 or 0.2508). The viscosity at normal pressure was analyzed with the extended law of corresponding states developed by Kestin et al. and the scaling parameters were obtained for unlike-pair interactions between HFC-125 and HFC-134a. The modified Enskog theory developed by Vesovic and Wakeham was applied to predict the viscosity for the binary gaseous mixtures under pressure.",

keywords = "Corresponding states, Enskog theory, HFC-125, HFC-134a, Mixture model, Viscosity",

author = "Chiaki Yokoyama and Tomomichi Nishino and Mitsuo Takahashi",

year = "2000",

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doi = "10.1016/S0378-3812(00)00430-1",

language = "English",

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pages = "231--240",

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TY - JOUR

T1 - Viscosity of gaseous mixtures of HFC-125 (pentafluoroethane) + HFC-134a (1,1,1,2-tetrafluoroethane) under pressure

AU - Yokoyama, Chiaki

AU - Nishino, Tomomichi

AU - Takahashi, Mitsuo

PY - 2000/9/25

Y1 - 2000/9/25

N2 - This paper reports experimental results for the viscosity of gaseous mixtures of HFC-125 (pentafluoroethane) + HFC-134a (1,1,1,2-tetrafluoroethane) under pressure. The measurements were carried out with an oscillating-disk viscometer of the Maxwell type at temperatures from 298.15 to 423.15K. The viscosity was measured for three mixtures (mole fraction of HFC-125 is 0.7510, 0.5001 or 0.2508). The viscosity at normal pressure was analyzed with the extended law of corresponding states developed by Kestin et al. and the scaling parameters were obtained for unlike-pair interactions between HFC-125 and HFC-134a. The modified Enskog theory developed by Vesovic and Wakeham was applied to predict the viscosity for the binary gaseous mixtures under pressure.

AB - This paper reports experimental results for the viscosity of gaseous mixtures of HFC-125 (pentafluoroethane) + HFC-134a (1,1,1,2-tetrafluoroethane) under pressure. The measurements were carried out with an oscillating-disk viscometer of the Maxwell type at temperatures from 298.15 to 423.15K. The viscosity was measured for three mixtures (mole fraction of HFC-125 is 0.7510, 0.5001 or 0.2508). The viscosity at normal pressure was analyzed with the extended law of corresponding states developed by Kestin et al. and the scaling parameters were obtained for unlike-pair interactions between HFC-125 and HFC-134a. The modified Enskog theory developed by Vesovic and Wakeham was applied to predict the viscosity for the binary gaseous mixtures under pressure.

KW - Corresponding states

KW - Enskog theory

KW - HFC-125

KW - HFC-134a

KW - Mixture model

KW - Viscosity

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JO - Fluid Phase Equilibria

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