ie9b04974_si_001.zip (392.44 kB)
Correlation and Prediction of Thermal Conductivity Using the Redlich–Kwong Cubic Equation of State and the Geometric Similitude Concept for Pure Substances and Mixtures
dataset
posted on 2019-12-13, 21:29 authored by Luis F. Cardona, Luis A. Forero, Jorge A. VelásquezIn this work, a model for the thermal conductivity of
nonpolar
and polar substances is developed based on the geometric similitude
concept between the P–v (molar
volume)–-T and T–k (thermal conductivity)–-P plots.
The Redlich–Kwong equation of state is used to perform the
geometric similitude. The parameters of the model are estimated by
fitting experimental data of saturated liquid and saturated vapor.
Generalized expressions in terms of the normal boiling point are proposed
for the parameters of n-alkanes and n-alcohols. The calculated average absolute deviations are 7.63 and
8.55%, respectively, for the n-alkanes and the n-alcohols used to develop the generalized expressions.
Also, some predictive calculations are performed, and deviations below
10.62 and 9.42% are obtained for n-alkanes and n-alcohols, respectively. In total, 2412 experimental data
(952 correlated data and 1460 predicted data) in the temperature range
of 95– to 645.5 K and pressures below 906.4 bar have been considered.
The empirical model has been extended to binary and ternary mixtures
using several approaches. In total, 16 mixtures in the temperature
range between 287.55 and 345.48 K at 1.01 bar are evaluated. The deviations
are below 4.63% when one binary interaction parameter is used. In
general, the results indicate that the empirical model is simpler
than the other models reported in the literature and generates adequate
results.