The Critical Liquid Volume Fraction Used to Represent and Predict Liquid-Vapor Coexistence Densities of Ethylene

The design and proper operation of liquefiers, refrigerators, and equipment incorporating power cycles depend on the knowledge of saturation properties. Accurate saturated liquid densities are also needed for economic storage and custody transfer operations. Also, liquid-vapor density data, including that in the triple point and critical point regions, are important in the development of equations of state originating at the coexistence boundary.