Microwave method for measuremnt of phase boundaries. Academic Article uri icon

abstract

  • This manuscript describes a novel apparatus for the direct measurement of phase boundaries in corrosive fluid mixtures to 1700 bar and 588 K. The apparatus measures small shifts in a static microwave energy field caused by changes in sample properties. On a phase boundary, appearance of a second phase causes detectible changes in the microwave frequency and power. The new method does not involve optical observation of the sample, interpolation of isochores, or composition analyses of samples drawn from the sample cell. Only small sample cell volumes (less than 10 cm3) are required. The microwave technique is effective with all types of fluids, light and heavy, nonpolar and polar, insert and corrosive, and it performs well at extreme conditions of pressure and temperature.

author list (cited authors)

  • Rogers, W. J., Fontalba, F., Holste, J. C., Hall, K. R., & Eubank, P. T.

complete list of authors

  • Rogers, WJ||Fontalba, F||Holste, JC||Hall, KR||Eubank, PT

publication date

  • January 1987