Modified temperature-dependent volume translation model in PC-SAFT equation of state for carbon dioxide

Application of volume‐translated rescaled perturbed‐chain statistical associating fluid theory equation of state to pure compounds using an expansive experimental database

“…Furthermore, the predictive capability of most EOSs for pure compounds is still compromised in the vicinity of critical point. [12][13][14] Thus, evaluating the performance of an EOS in predicting properties of pure compounds in the vicinity of critical point is of paramount importance.…”

“…To address this issue, some researchers have sought to re-parameterize the three pure-component parameters required in PC-SAFT-type EOSs to ensure exact reproduction of the critical point. 13,15,[21][22][23][24][25][26][27][28][29][30] However, this method appears somewhat intrinsically inaccurate. While it can precisely reproduce the experimental critical temperature and critical pressure, it compromises the accurate prediction of other thermodynamic properties, both near and away from the critical region.…”

“…To enhance the accuracy of property predictions both near and away from the critical region, the volume translation technique, 13,28,[30][31][32] previously widely incorporated into CEOSs, [33][34][35][36][37] was progressively introduced into SAFT-type EOSs in recent years.…”

“…Table 1 presents a comparative analysis of parameterization and volume translation strategies employed in various PC-SAFT-type EOSs. 9,13,27,28,30 Moine et al 28 introduced an industrialized version of the volume-translated PC-SAFT EOS for pure components (i.e., I-PC-SAFT EOS), which A hallmark of a reliable EOS is its ability to accurately predict thermodynamic properties of a wide range of compounds. To evaluate the reliability and accuracy of an EOS model, it is imperative to assess its performance in correlating various thermodynamic properties of numerous pure compounds over a wide range of temperature and pressure.…”

“…Recent years have seen increased attention toward the regression of pure component parameters in different EOSs, driven by the expansion of reliable experimental database and the advancement of optimization tools. [38][39][40] VTR-PC-SAFT EOS proposed by Shi and Li 13 appears to effectively address the shortcomings of the reparametrization method and successfully model the phase behavior over a wide range of temperature and pressure. In this study, we T A B L E 1 Comparative analysis of the parameterization methods and volume translation strategies employed in various PC-SAFT-type EOSs.…”