Abstract
PVTx measurements for carbon dioxide (CO, R744) + 1,1-difluoroethane (CHCHF, R152a) for both the two-phase and the superheated vapor regions are presented. The measurements were taken with a constant volume apparatus at temperatures ranging from (223 to 343) K and pressures from (60 to 3890) kPa along eight isochores. The data obtained in the two-phase region were used to derive vapor-liquid equilibrium (VLB) parameters using a flash method with the Carnahan-Starling-De Santis equation of state (CSD EOS). The dew point was also found for each isochore from the intersection of the P-T sequences. Results from the superheated region were compared with those predicted from the CSD EOS. The complete set of data was also compared with the REFPROP 7.0 prediction.
Original language | English |
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Pages (from-to) | 1258-1261 |
Number of pages | 4 |
Journal | Journal of Chemical and Engineering Data |
Volume | 52 |
Issue number | 4 |
DOIs | |
Publication status | Published - 1 Jul 2007 |