Experimental and theoretical studies of dense fluid mixtures. Scientific and technical progress report.

摘要

During the first fifteen months of this grant, we carried out measurements of the speed of sound in R-134a, an environmentally safe refrigerant that is a leading candidate to replace R-12, which is widely used in refrigerators and air conditioners but causes depletion of the stratospheric ozone layer when it is released into the atmosphere. We also modified and improved our equipment for measuring interfacial tension in pure fluids and mixtures and prepared for a new set of measurements of interfacial tension over a wide range of temperature and pressure conditions for several mixtures of simple fluids. The results of these measurements will be used to test our new corresponding states theory of the variation of surface tension.