Modeling the thermal conductivity of hydrofluorocarbons, hydrofluoroolefins and their binary mixtures using residual entropy scaling and cubic-plus-association equation of state

Thermal conductivity strongly impacts heat transfer, and thus is an important thermophysical property for refrigeration medium-low-temperature utilization systems. In this work, the residual entropy scaling incorporating cubic-plus-association equation of state, as a convenient robust modeling approach transport properties pure mixture fluids which experimental data are scarce or unavailable, extended to thermal hydrofluorocarbons, hydrofluoroolefins, their binary mixtures. For all investigated fluids, dependence on thermodynamic state reduced ‘universal’ univariate function rescaled with one adjustable parameter each fluid no further A new formulation reference proposed improve accuracy The model reproduces root mean square deviation 2.9% in gas, liquid, supercritical regions. lack uneven distribution overcome based extensive R134a reference. • Linked law. Revised mixture. Accurately reproduced wide ranges. Predicted without additional parameter.