PVTx Measurements of the Carbon Dioxide + 2,3,3,3-Tetrafluoroprop-1-ene Binary System

In this work, the PVTx properties of carbon dioxide +
2,3,3,3-tetrafluoroprop-1-ene were measured by an isochoric apparatus.
The experiment covered both two-phase and superheated vapor
regions and have been performed a total of eight isochores within a
temperature range that spanned from (223 to 373) K and within a
pressure range from (62 to 2292) kPa. Our experimental results were
correlated with the Carnahan.Starling.DeSantis equation of state
(CSD EoS) and predicted with REFPROP 9.0. Coefficients for the
CSD EoS were derived from the experimental data. Results in the twophase
region showed a good agreement with the CSD equation and a
strong disagreement with the REFPROP 9.0. Data in the superheated
vapor region were also predicted by extrapolating coefficients for the
CSD EoS at higher temperatures. The agreement with CSD EoS for
the superheated vapor region experimental data was also good. The vapor.liquid equilibrium (VLE) behavior of the studied
binary system from the experimental data was also derived.