Estimation of Thermal Conductivities for Binary and Ternary Liquid Mixtures Using Excess Thermal Conductivity Model

The objective of this work is the estimation of thermal conductivities for binary and ternary liquid mixtures using an excess thermal conductivity model. Firstly, calculation methods for thermal conductivities of ideal solutions are discussed using four models, including mole fraction average, One intuitively similar to Eyring’s model for kinematic viscosity and mass fraction average. Next, the Wilson-ThermConduct model was applied as the excess thermal conductivity model. The binary parameters in the model were determined from non-aqueous and aqueous binary thermal conductivity data. The prediction of the thermal conductivities for the ternary systems was done using the binary parameters of the binary constituent systems. The model presented in this work gave a 0.66% average absolute relative deviation of overall datasets. The evaluated results were compared with those using the mass fraction average (ideal) model, the Vredeveld’s power-law model, and Rowley’s local composition model with NRTL parameters determined from VLE data.