Abstract

Vapor phase pressure–volume–temperature ( P– V– T) measurements have been performed for binary mixtures of hydrogen fluoride (HF) with three different alternative refrigerants. A total of 62 mixtures were tested at temperatures ranging from 283.15 to 343.15 K. Pressures ranged from 100 to 1400 kPa, and HF concentrations varied from about 0.2 to 0.9 mole fraction HF. Several data were also obtained for the system HF/Nitrogen at 323.15 K. Data have been compared to a model based on a monomer–hexamer chemical association model and the Soave equation of state. Deviations in compressibility factors between the model and the experimental data averaged 1.5%.

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