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Volumetric properties of normal fluids at low temperatures: An extension of Pitzer's generalized correlation
Author(s) -
Lu Benjamin C.Y.,
Hsi Chu,
Chang ShinnDer,
Tsang Albert
Publication year - 1973
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.690190411
Subject(s) - acentric factor , compressibility , compressibility factor , thermodynamics , extension (predicate logic) , chemistry , mathematics , physics , computer science , programming language
The three‐parameter tabular correlation of Pitzer et al. for calculating the compressibility factor of pure components has been extended to lower temperatures in the region where T r is from 0.5 to 0.80 and P r is from 0 to 9. The compressibility‐factor is expressed linearly in the acentric factor Z = Z (0) + ω Z (1) with values of Z (0) and Z (1) tabulated in terms of T r and P r . The generalized correlation has been tested for 21 compounds with a total number of 463 data points. The average deviations in the calculated compressibility factors are 1.63% for the compressed liquids and 0.67% for the gases.