Measurements of the viscosity of n-heptane,n-nonane,and n-undecane at pressures up to 70 MPa |
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Authors: | M. J. Assael M. Papadaki |
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Affiliation: | (1) Department of Chemical Engineering, Aristotle University, GR54006 Thessaloniki, Greece |
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Abstract: | New absolute measurements of the viscosity of n-heptane, n-nonane, and n-undecane are presented. The measurements were performed with a vibrating-wire instrument at temperatures of 303.15 and 323.15 K and pressures up to 70 MPa. The overall uncertainty in the reported viscosity data is estimated to be ±0.5%. A recently developed semiempirical scheme for the correlation and prediction of the thermal conductivity, viscosity, and self-diffusion coefficients of n-alkanes is applied to the prediction of the viscosity of n-heptane, n-nonane, and n-undecane. The comparison of these predicted values with the present high-pressure measurements demonstrates the predictive power of this scheme. |
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Keywords: | high pressure n-heptane n-nonane n-undecane viscosity |
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