Isochoric PVTx measurements for the carbon dioxide + 1,1-difluoroethane binary system

G. Di Nicola; F. Polonara; G. Santori; R. Stryjek

doi:10.1021/je600583u

Isochoric PVTx measurements for the carbon dioxide + 1,1-difluoroethane binary system

G. Di Nicola, F. Polonara, G. Santori, R. Stryjek

School of Engineering

Research output: Contribution to journal › Article › peer-review

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
Pages (from-to)	1258-1261
Number of pages	4
Journal	Journal of Chemical and Engineering Data
Volume	52
Issue number	4
DOIs	https://doi.org/10.1021/je600583u
Publication status	Published - 1 Jul 2007

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This document is the unedited author's version of a Submitted Work that was subsequently accepted for publication in Journal of Chemical and Engineering Data, copyright © American Chemical Society after peer review. To access the final edited and published work, see http://pubs.acs.org/doi/abs/10.1021/je600583u.
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title = "Isochoric PVTx measurements for the carbon dioxide + 1,1-difluoroethane binary system",

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.",

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AU - Polonara, F.

AU - Santori, G.

AU - Stryjek, R.

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N2 - 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.

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Isochoric PVTx measurements for the carbon dioxide + 1,1-difluoroethane binary system

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