Modeling Mixtures Containing Refrigerants: Updated Interaction Parameters

Abstract

This work develops updated mixture models for the multifluid modeling paradigm based on experimental data taken from the literature for refrigerant-like components. When vapor–liquid equilibrium data were available, the parameter γ_T was fit, and when density data were also available, all four interaction parameters were fit. In total this meant fitting of 313 binary mixtures, of which 23 were represented with a set of four binary parameters and the rest with just a single interaction parameter. Other types of experimental thermodynamic data (heat capacities especially) were compared against but not included in the model development. Additional high-accuracy data are required for the development of more accurate mixture models.