Solubility, density and viscosity of a mixture of R-600a and polyol ester oil

Experimental data on solubility, liquid phase density and viscosity of a mixture of R-600a and a POE ISO 7 lubricant oil are presented. A specially designed experimental facility for simultaneous measurements of the physical properties was used in the experiments at temperatures ranging from 10 to 60 degrees C. The VLE data were correlated with the Heil-Prausnitz and Flory-Huggins activity models and the Peng-Robinson equation of state (EoS). Liquid density was correlated with the Peng-Robinson EoS and with a first-order Redlich-Kister expansion for the excess molar volume. Liquid viscosity was correlated with an excess-property approach based on the classical Eyring liquid viscosity model. Satisfactory agreement was obtained between models and experiments; maximum root mean square (RMS) deviations of models used in the VLE, density and viscosity predictions were 1.1% (VLE EoS), 0.2% (Redlich-Kister) and 3.0% (Grunberg-Nissan), respectively. (c) 2007 Elsevier Ltd and IIR. All rights reserved.