Kinematic viscosities of twelve mixtures made from pentane, hexane,
heptane, octane, decane, and carbon
dioxide were measured using a rolling ball viscometer. The
temperatures ranged from 310 K to 403 K
and the pressures from 0.8 MPa to 12 MPa. Kinematic viscosities
were converted to absolute viscosities
using mixture densities estimated from a modified Rackett equation.
Calculated absolute viscosities for
the decane + CO2 system were within 0.5% of the values
by Cullick and Mathis. All viscosities of
hydrocarbon mixtures and hydrocarbons with CO2 could be
predicted from the Orbey and Sandler
correlation with an average absolute deviation of 4.1%. We found
that the Lohrenz, Bray, and Clark
viscosity correlation cannot be used to estimate the viscosity of the
mixtures containing CO2 with
reasonable accuracy.
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