THERMODYNAMIC PROPERTIES OF PENTAFLUOROETHANE (R-125) AND 1,1-DICHLORO-1-FLUOROETHANE (R-141B)
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Vapor pressures, liquid densities, and vapor densities were measured for pentafluoroethane (R-125) and 1,1-dichloro-1-fluoroethane (R-141b) at temperatures between -135 F (180 K) and 400 F (480 K) and pressures to 10,000 psia (70 MPa). The critical temperatures were measured and critical pressures derived for each fluid. The experimental values were used to develop correlations for the measured properties. Enthalpies and entropies for the saturated liquid, saturated and superheated vapor, and the heat capacities of saturated liquid and vapor were derived for R-125 from the PVT behavior and ideal gas heat capacities. The correlations provide vapor densities accurate to better than 0.05%, liquid densities accurate to better than 0.1%, vapor pressures accurate to 0.05%, calculated enthalpies and entropies accurate to 1%, and heat capacities accurate to 5%.
ASHRAE TRANSACTIONS 1993, VOL 99, PT 2
author list (cited authors)
DUARTEGARZA, H. A., HWANG, C. A., MILLER, R. C., GAMMON, B. E., MARSH, K. N., HALL, K. R., & HOLSTE, J. C.
complete list of authors
DUARTEGARZA, HA||HWANG, CA||MILLER, RC||GAMMON, BE||MARSH, KN||HALL, KR||HOLSTE, JC