The name is absent

where aŋi, a∏, and a₂⅛, as well as b_θ2,b₁,, and b_2i, are the model (universal) constants.
The new EOS has a different hard chain term than the PC-SAFT equation of state;
therefore the first step was to obtain the universal constants from the experimental
data of n-alkanes, following the method proposed by Gross and Sadowski for the
estimation of the constants of the original PC-SAFT equation of state [48]. During
the regression process, it was found that the sensitivity of the model to the values of
b₀i, bu and b₂j was low, therefore the values of b_0l, b∏ and b₂, regressed by Gross and
Sadowski [48] were not changed. The а_Ог, a∏ and а_2г constants were regressed using
the data for the n-alkane series from n-C3 to n-C10. The universal model constants
are reported in table 2.1. It should be noted that unlike the original work by Gross
and Sadowski [48], methane was not used during the regression. This is because the
chain length parameter of methane less than two. The hard chain term in SAFT-D
is undefined for values less than two, as it includes a contribution from dimerization.
The focus of this work being on long chain molecules and polymers, this problem is
not addressed here.

Table 2.1: Universal model constants. The values of ao, aɪ and a₂ were adjusted in this
work; the values of bɑ, bɪ and b₂ are from Gross and Sadowski [48].

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