THERMODYNAMIC PROPERTIES OF CF3-CHF-CHF2, 1,1,1,2,3,3-HEXAFLUOROPROPANE

Citation
Dr. Defibaugh et al., THERMODYNAMIC PROPERTIES OF CF3-CHF-CHF2, 1,1,1,2,3,3-HEXAFLUOROPROPANE, Fluid phase equilibria, 122(1-2), 1996, pp. 131-155
Citations number
15
Categorie Soggetti
Engineering, Chemical","Chemistry Physical
Journal title
ISSN journal
03783812
Volume
122
Issue
1-2
Year of publication
1996
Pages
131 - 155
Database
ISI
SICI code
0378-3812(1996)122:1-2<131:TPOC1>2.0.ZU;2-B
Abstract
We report the thermodynamic properties of 1,1,1,2,3,3-hexafluoropropan e (known in the refrigeration industry as R236ea or HFC-236ea) in the temperature and pressure region commonly encountered in thermal machin ery. The properties are based on measurements of the vapor pressure, t he density of the compressed liquid (PVT), the refractive index of the saturated liquid and vapor, the critical temperature, and the speed o f sound in the vapor phase. The surface tension was determined from th e capillary rise. From these data we deduce the ideal-gas heat-capacit y, the saturated liquid and vapor densities, the equation of state of the vapor phase, the surface tension, and estimates of the critical pr essure and density. The data determine the coefficients for a Carnahan -Starlings-DeSantis (CSD) equation of state. The CSD coefficients foun d in REFPROP 4.0 database are based on these present measurements.