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

被引：17
|
作者：
Yokoyama, C [1 ]
Nishino, T [1 ]
Takahashi, M [1 ]
机构：
[1] Tohoku Univ, Inst Chem React Sci, Sendai, Miyagi 9808577, Japan
来源：
FLUID PHASE EQUILIBRIA | 2000年 / 174卷 / 1-2期
关键词：
corresponding states; Enskog theory; HFC-125; HFC-134a; mixture model; viscosity;
D O I：
10.1016/S0378-3812(00)00430-1
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
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 423.15 K. 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 raw of corresponding states developed by Kestin et ai, 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. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：231 / 240
页数：10
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