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Hydrate dissociation conditions were studied for the CO2/refrigerant + sucrose/fructose/glucose solution systems as a continuation of previous work into alternate separation technologies for the sugar manufacturing industries. Experimental data were measured following the isochoric pressure method for the CO2 + sucrose/fructose solution systems. The refrigerants studied for the modeling purpose were R410a, R507, R134a, and R22 using literature data. The pressure and temperature ranges for the experimental data measured here were (1.80–4.10) MPa and (276.6–282.6) K, respectively, with solutions measured in the composition range between 0 to 0.40 mass fraction sucrose and fructose. Several models following the Van der Waals–Platteeuw solid solution theory were developed to predict the hydrate dissociation conditions of CO2/fluorinated refrigerant in the presence of sucrose/fructose/glucose solutions. The modeling results provide a satisfactory representation of the experimental data, with AARD(P) % model errors in the overall range between 0.03% and 4.40%.

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Novel isothermal phase equilibrium data were measured, via the static analytic (SA) and static synthetic (SS) techniques, for the binary mixtures of tetrafluoromethane with either perfluoroheptane or perfluorodecalin. The experimental data were correlated using the Peng–Robinson equation of state using either the classical or the Wong–Sandler mixing rules. For both binary systems, the models provide an excellent fit to the data and the Wong–Sandler mixing rule marginally outperformed the classical mixing rule. The uncertainty of the pressure, temperature, and average liquid- and vapor-phase compositions for the SA apparatus were 0.01 MPa, 0.09 K, and 0.012 and 0.0014, respectively. The uncertainty of the pressure, temperature, and average liquid-phase composition for the SS apparatus were 0.01 MPa, 0.07 K, and 0.009, respectively.