L.A. Watts and B. Louie
Submitted to the International Journal of Thermophysics
A new apparatus has been designed and constructed to measure the phase equilibria and phase densities of corrosive aqueous-organic-salt mixtures. This apparatus is designed for isothermal operation from ambient temperatures to 400 K. Phase equilibrium measurements at higher temperatures may be achieved without density measurements. This paper presents a detailed description and performance testing of the apparatus. Measurements of the vapor pressures and saturated liquid densities of ethanol and the vapor pressure of an ethanol water mixture (ethanol=0.6743 mole fraction) from 308 K to 385 K at pressures to 15 MPa are used as performance tests.