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Fugacity and vapor pressure of nonpolar liquids at low temperatures
Author(s) -
Chao K. C.,
Greenkorn R. A.,
Olabisi Olagoke,
Hensel B. H.
Publication year - 1971
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690170222
Subject(s) - fugacity , thermodynamics , vapor pressure , polar , chemistry , vapor–liquid equilibrium , simple (philosophy) , physics , quantum mechanics , philosophy , epistemology
Available generalized correlations of fugacity coefficients of nonpolar liquids are reexamined in their lower temperature ranges, and these correlations are extended to a reduced temperature of 0.35. Generalized functions are constructed from literature data on vapor pressures and liquid densities. Two sets of functions are presented with w and z c , respectively, as third parameter. The results fulfill a need for basic information in the engineering of cryogenic systems. The same vapor pressure data are correlated in a generalized form down to T r = 0.35 to give a one‐parameter family of reduced vapor pressures curves. The correlation is compared with data on simple fluids, normal fluids, polar substances, and quantum fluids.