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Multiproperty analysis of PVT, enthalpy and phase equilibrium data
Author(s) -
Lin ChenJung,
Kwok Y. C.,
Starling K. E.
Publication year - 1972
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.5450500515
Subject(s) - propane , enthalpy , thermodynamics , methane , chemistry , equation of state , vapor pressure , organic chemistry , physics
In the most general application yet made of the method, multiproperty analysis was used to determine methane and propane parameters for a modified BWR state equation. Over 1300 mixture and pure component data points for density, enthalpy, vapor pressure and vapor‐liquid equilibrium, from −290°F to 400°F and up to 9,000 psia, were used in the multiproperty repression calculations. The resultant equation of state predicts thermodynamic properties with low average absolute uncertainties: 0.0055 lb‐mole/cu. ft. (0.77%) for density, 1.01 Btu/lb for enthalpy, 0.0147 Btu/lb‐ °F for entropy, 0.62% and 0.63% respectively for methane and propane vapor pressures and 1.67% and 3.73% respectively for methane and propane K‐values.