Analysis of Liquid Volume and Liquid Mass Fractions at Coexistence for Pure Fluids

摘要

An analysis of the behavior of liquid volume and liquid mass fractions at coexistence for pure fluids is made. Scaled equations for the saturation liquid and vapor densities are analyzed and relationships between various exponents and among constant coefficients are presented. Inequalities which exist among the saturation densities and their derivatives are developed. A procedure to correlate saturation data with the critical point is applied to ethylene. An experimental procedure to determine, simultaneously, saturated liquid and vapor densities at a given temperature is presented.