Correlation for the second virial coefficient for nonpolar compounds using cubic equation of state

Excess and unlike-Interaction second virial coefficients and excess molar enthalpy of (0.500CO + 0.500CO2)

“…In common with many reduced equations of state when applied to unlike-interaction terms it uses the mixing rules: FIGURE 1. Unlike-interaction second virial coefficient B12 for CO-CO2: W, this work; w, Cottrell et al; (19) q, Menon; (17) r, Brewer; (18) --, Tsonopoulos correlation; (13) ----, Mak and Lielmezs correlation; (15) --, B12 from equations (4), (5), and (7).…”

Second virial coefficients of fuel-gas components: (carbon monoxide + nitrogen) and (carbon monoxide + ethene)

“…The functional forms of A 0 and A 1 are well established (18) and the extension of this equation to B 12 using the same combining rules as for the Tsonopoulos equation has been demonstrated previously. (14) The measured B 12 values for (0.5N 2 + 0.5CO) are plotted in figure 1 along with two values from the published literature at lower temperatures.…”

“…The forms of functions f (0) and f (1) are available. (17) Another correlation which may be applied to B 12 is that due to Mak and Lielmezs (18) which is of the form:…”

Compression Factors and Virial Equation of State Coefficients for the System Carbon Monoxide + Ethane

“…The unlike interaction second virial coefficients were evaluated from the mixture values using the relation Bm = (4) The values obtained using pure component values obtained from the GERG correlation are listed in Table 3 and plotted in Figure 1 along with the correlations of Tsonopoulos (8) and of Mak and Lielmezs (9). In both these correlations TC:l2 has the form (5) Figure 1.…”