Crossover CPA equation of state for associating fluids
作者： Xin-Hao Xu , Yuan-Yuan Duan
DOI: 10.1016/J.FLUID.2009.11.015
关键词:
摘要: Associating fluids are of great interest from an industrial point view and their thermophysical properties needed for many practical applications. The Cubic-Plus-Association (CPA) equation state has been successfully used to describe systems contain associating compounds. However, this does not take into account the effect long scale density fluctuations, which causes it fail represent non-analytical, singular behavior in critical region. A crossover CPA EOS based on White's renormalization group (RG) theory was derived, can be both near far point. This provides good agreement with experimental data 1-alkanols (methanol, ethanol, 1-propanol, 1-butanol, 1-octanol) water, much better results obtained vicinity than original EOS.
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