An equation of state for methanol including the association term of SAFT

• SAFT implemented for the first time in the framework of multiparameter EoS.
• Good representation also of dense states through a compact EoS, from triple point to supercritical temperatures.
• The three adjustable parameters of the SAFT term are tied to measurable physical quantities.

A physical term accounting for association was taken from the SAFT theory [1] and was implemented in modern (semiempirical) multiparameter Helmholtz equations of state [2] in a way that it can directly be used in common mathematical frameworks in a relatively straightforward way. The implemented physical term contains three fluid specific parameters.In order to prove its capability to accurately describe a typical associating substance even at very low temperatures (down to the triple point) and high pressures (up to 500 MPa), methanol has been selected as target fluid.

Figure optionsDownload as PowerPoint slide