Pitzer devised the notion of an acentric factor ω to represent any dimensionless property χ+, of a real non-polar fluid, by a first-order limited expansion of ω (article Chemical thermodynamics. III Thermodynamic equilibria [J 1 028] of the Process Engineering treatise) :χ+ = χ+ (0 ) (T +, p +) + ω χ+ (1 ) (T +, p +)
with :
χ+ (0) and χ+ (1)
:
functions given by tables.
Lee and Kesler
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(1) - REID (R.C.), PRAUSNITZ (J.M.), SHERWOOD (T.K.) - The properties of gases and liquids. - 688 p., bibl. nombreuses réf., New York 3e éd., McGraw Hill (*Δ) (1977).
(2) - SVEHLA (R.A.) - Estimated viscosities and thermal conductivities of gases at high temperatures. - 119 p (contient les données )...
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Polar fluids and Wu and Stiel complementary tables
