Determination of interaction second virial coefficients; He‐CO₂ system

Abstract

We have obtained values for interaction second viral coefficients of the helium‐carbon dioxide system in the range 230 ⩽ T/K ⩽ 300. Our experimental technique is essentially the Burnett mixing method described by Hall and Eubank (1973, 1974). We have modified the analysis to account for higher‐order effects and to detect significant systematic errors. We also report virial coefficients for the pure components: helium in the range 100 ⩽ T/K ⩽ 300 and carbon dioxide at 300 K.

Ab initiopotential energy curve for the helium atom pair and thermophysical properties of the dilute helium gas. II. Thermophysical standard values for low-density helium

“…In this connection we refer to Figure 2 of the paper by Hurly and Moldover [1] who obtained the same results for their potential in the temperature range 10-10,000 K. [30] agree at the higher temperatures with the second virial coefficients determined by Blancett et al [33] and by Holste et al [37]. Above room temperature the data by Schneider et al [31,32], Waxman [34], and Kell et al [36] are in close agreement up to about 500 K.…”

High-precision virial coefficients of argon and carbon dioxide from integration of speed of sound data in the pressure–temperature domain

“…Absolute deviation, with respect to the new determination C num of this work, of formerly-reported data for the third virial coefficient of carbon dioxide. The symbols indicate the source: filled squares [46], down-pointing emtpy triangles [54], empty diamonds [55], clubs [56], empty squares [47], empty circles [57], hearts [60], spades [58], downpointing solid triangles [49], filled circles [42], crosses [51], solid diamonds [52], up-pointing solid triangles [59] and uppointing empty triangles [53]. The solid lines indicate the uncertainty of C num .…”

Compressibility factors, densities, and residual thermodynamic properties for methane-water mixtures

“…Hall and Canfield (18) demonstrated a least-squares approach to the analysis of Burnett data. More recently, Holste et al (19) have discussed both the Burnett and the Burnett-isochoric analyses. Both the Burnett and the Burnett-isochoric analyses work well for gases at temperatures well above the critical temperature where physical adsorption of the gas molecules onto the apparatus surface is not important.…”