A New Quartic Equation of State Based on a General Form and Its Application to Pure Fluids

Abstract

A new quartic equation of state (EOS) based on a general form is proposed. Parameters in the new equation are regressed as substance-specific constants for 88 pure substances. The calculated saturated properties for nonpolar and polar substances are compared with experimental data and with that obtained by the PengÀRobinson StryjekÀVera (PRSV), PatelÀTeja (PT), and Yun EOSs for the various pure substances. Despite its simplicity, the proposed equation has good predictive capability over the entire temperature region.