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Generalized thermodynamic properties of real gases: Part II. Generalized Benedict‐Webb‐Rubin equation of state for real gases
Author(s) -
Su GouqJen,
Viswanath D. S.
Publication year - 1965
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.690110207
Subject(s) - equation of state , thermodynamics , generalization , mathematics , range (aeronautics) , real gas , constant (computer programming) , absolute deviation , chemistry , state (computer science) , mathematical analysis , physics , materials science , statistics , algorithm , computer science , composite material , programming language
By use of a least‐squares technique, a set of parameters for the generalized Benedict‐Webb‐Rubin equation is determined. The generalization of the equation is based on the modified theorem of corresponding states. The generalized equation shows a grand average absolute deviation of 1.6% in predicting the observed values of reduced pressure. The set of constants has been determined for densities up to twice the critical density in the reduced pressure range of 0 to 40.0 and a reduced temperature range of 1.0 to 15.0. The recommended generalized constants are A o ′ = 0.24180980, a o ′ = 0.04407059 a′ α′ = 0.11369478 × 10 −3 , B o ′ = 0.07643101, b′ = 0.03715171, C o ′ = 0.21217005, c′ = 0.06448001 and γ′ = 0.06.