The CO2/HCs fluids are widely discussed in the engineering and scientific studies. The viscosity, as one of the most important transport properties, plays a key role in the applications of CO2/HCs mixtures in different fields. The theoretical approaches are effective to supplement the experimental viscosity data in wide thermodynamic ranges. In this paper, viscosity models are built for CO2/HCs binary mixtures based on the Vesovic-Wakeham theory. The viscosity correlations and the potential parameters of pure species are selected from literature and utilized in the constructions of models. The viscosities of five industrially important CO2/HCs binary systems are predicted in the temperature range from 273.15 K to 973.15 K and at the pressure up to 200 MPa. The studied systems are CO2/CH4,CO2/C2H6,CO2/C3H8,CO2/n-C4H10 and CO2/iso-C4H10. The calculated values are compared with a large amount of experimental viscosity data over a wide temperature-pressure range. The extensive analysis shows that the calculated viscosity values of the present work could be used with confidence in different industrial applications.
SONG Bo
,
TIAN Yuansi
,
WANG Xiaopo
,
LIU Zhigang
. Viscosity Molding of CO2/HCs Fluid Mixtures in Wide Thermodynamic Ranges[J]. Science & Technology Review, 2014
, 32(27)
: 19
-22
.
DOI: 10.3981/j.issn.1000-7857.2014.27.002
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