The name is absent



Figure 2.6: Pure component parameters for the n-alkane series as a function of the molar
mass.


Mw [g'moɪ]


0 SO ICO (SO 200 250 300 3S0 400

Mw [g'mo∣∣


where parameter(k) is one of {r∏i∕Mwi,σi,ti∕k'). The coefficients of the correlations
are given in table 2.3. The correlations are also plotted in figure 2.6. These correla-
tions are used to extrapolate the parameters for higher alkanes.

parameter (k)

units

qp⅛

q⅛

qafc

m∕Mu,

mol∕g

3.626670923

0.44366558

0.373239091

σ

Â

0.045349657

-0.021681925

-0.001005353

e∕k

K

209.4657254

64.23483985

5.152948312

Table 2.3: Constants used in the correlation presented in Eq. (2.31) for the dependence of
SAFT-D parameters on molecular weight of n-alkanes.

Figure 2.7 compares experimental saturated liquid densities of tetracosane(n-
C24), triacontane(n-C30), and hexatriacontane(n-C36), with those calculated from
PC-SAFT and the new equation of state using extrapolated parameters. The new
EOS performs better than PC-SAFT and give reasonably accurate densities for all
three components in the range of temperature considered.

52



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