SECOND VIRIAL COEFFICIENTS FOR THE SYSTEMS: n-BUTANE + PERFLUORO-n-BUTANE AND DIMETHYL ETHER + 1-HYDROPERFLUOROPROPANE

Gas phase PVT properties and second virial coefficients of dimethyl ether

“…[15] has a reduced temperature range from 0.86 to 0.98. Compared to the data published in the literature [9,11,13], the tendency of Eq. (2) given by the present work for lower temperature is more reasonable than the equation given by Ref.…”

“…After a literature survey, a very limited data of second virial coefficients and gas phase PVT properties for dimethyl ether were found [9][10][11][12][13][14][15][16]. In this work, a total of 126 experimental data were collected in the gas phase region for the temperature range of 328-403 K including 9 points in the super-critical region.…”

Equations of State for the Thermodynamic Properties of n-Perfluorobutane, n-Perfluoropentane, and n-Perfluorohexane

“…However, they do not agree well with each other. The AADs in the second virial coefficients of Dantzler and Knobler, 53 Tripp and Dunlap, 54 and Koster et al…”

“…Figure exhibits comparisons of the second virial coefficients calculated with the equation of state for n -perfluorobutane to experimental data. Five points were reported by Dantzler and Knobler and Tripp and Dunlap . Additionally, some molecular simulation data from Köster et al are available.…”

“…Since there are no experimental data available to compare with, no statement on the uncertainty of densities can be made in this region. Figure 13 exhibits comparisons of the second virial coefficients calculated with the 54 Additionally, some molecular simulation data from Koster et al 18 are available. However, they do not agree well with each other.…”