Automated Phase Densities and Interfacial Tension Measurements
Abstract
A vapor-liquid equilibrium experimental facility designed for the measurement of phase densities and interfacial tensions (IFT) at various temperatures was automated. The automation provides for computerized data acquisition and temperature control as well as instantaneous analysis of the raw data. In addition, a new IFT cell was designed and constructed, and a number of components of the apparatus which have hindered progress in previous endeavors were modified. The automation of the experimental apparatus was successful in both controlling the system temperature within O.l�F and acquiring vapor pressure, liquid and vapor densities, and interfacial tension of pure fluids. Precise vapor pressure, phase densities, and interfacial tension data were obtained for n-pentane at 120�F. Comparison of the results of this test case with reliable literature measurements confirm the viability of the automated apparatus.
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- OSU Theses [15752]