A.H. Harvey
Steam, Water, and Hydrothermal Systems: Physics and Chemistry Meeting the Needs of Industry, Proceedings of the 13th International Conference on the Properties of Water and Steam, Eds. P.R. Tremaine, P.G. Hill, D.E. Irish, and P.V. Balakrishnan, NRC Press, Ottawa, 2000.
An estimate is made of water's second virial coefficient by integrating an accurate pair potential. The calculated values are correlated as a function of temperature, and the resulting correlation is compared to experimental data for the second virial coefficient and to data for its temperature derivative as derived from flow calorimetry. While the data are matched well at high temperatures, at lower temperatures the predicted second virial coefficients are significantly less negative than those from existing correlations and than the most reliable experimental values. It is suggested that this is due to a combination of the neglect of higher-order quantum corrections and the imperfection of the pair potential used.