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AcentricFactor

 

The acentric factor, w, is a thermodynamic property of a fluid that is commonly used in property correlations.  It is defined by

 

w = -1.0 - log10(Psat/Pcrit)

 

where 

Psat is the vapor pressure of the fluid at a temperature equal to 0.7 * Tcrit

Pcrit is the critical pressure

Tcrit is the critical temperature [R or K]

 

 

Thermophysical Property Functions