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The solubility of HFC 125, HFC 134a, HFC 143a and HFC 152a in n ‐eicosane, n ‐hexadecane, n ‐tridecane and 2, 6, 10, 14‐tetramethylpentadecane
Author(s) -
Wahlström åsa,
Vamling Lennart
Publication year - 1997
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450750308
Subject(s) - uniquac , isochoric process , thermodynamics , solubility , refrigerant , fluorocarbon , dilution , activity coefficient , chemistry , materials science , analytical chemistry (journal) , organic chemistry , aqueous solution , physics , non random two liquid model , gas compressor
The solubility of 1, 1, 1, 2,2‐pentafluoroethane ( HFC 125), 1, 1, 1, 2‐tetrafluoroethane ( HFC 134a), 1, 1, 1‐trifluoroethane (HFC143a) and 1,1‐difluoroethane ( HFC 152a) in four well‐known hydrocarbons have been measured at temperatures between 293.15 and 363.15 K and pressures between 0.05 and 2 MPa. Henry's constant, and the activity coefficient for HFCs at infinite dilution, have been derived for measurements below 0.28 MPa. The measurements were made with an isochoric method and their uncertainty is less than 2% for Henry's constant and less than 3% at high pressure. For several mixtures, the experimental data have been correlated with the UNIQUAC method and binary interaction parameters have been derived, resulting in a deviation from the data of less than 4%.