Solution of the multiphase equilibrium problem for pure component, binary and ternary systems using the area method

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Abstract
This paper describes the application of the area method iterative technique to the phase equilibrium problem of pure component, binary and ternary systems. The equations derived from the objective function of the area method for the solution of this important problem are shown to be consistent with basic thermodynamic criteria. The essential soundness of the technique is illustrated using a variety of systems taken from the literature that exhibit two- and three-phase behaviour under different conditions.