EOS-CG: AN ACCURATE PROPERTY MODEL FOR APPLICATION IN CCS PROCESSES
The GERG-2004 equation of state is evaluated with regard to its performance for fluid mixtures relevant in carbon capture and storage processes, oxyfuel power cycles and high-pressure humid air applications such as compressed air energy storage. A comprehensive database has been set up, comprising experimental property data for carbon dioxide, water, nitrogen, oxygen, argon, and carbon monoxide mixtures. This database is used for the validation of the equation. Other common equations of state are compared to the GERG-2004 and to the experimental data. The model performs well in the single phase regions (gas and liquid) of most mixtures but fails to accurately predict the phase compositions in the two phase region when water is involved. The carbon dioxide+water binary mixture proves to be most challenging in this regard. However, the GERG-2004 is superior to the other models used for comparison and appears to be the best choice available for the time being. A new mixture model is being developed based on the GERG-2004. The focus is the improvement of the description of the phase boundary for the mixtures mentioned above. First results are presented along with an outlook on future work.
Johannes Gernert Roland Span
Thermodynamics Ruhr-Universitaet Bochum 44801 Bochum, Germany
国际会议
The Ninth Asian Thermophysical Properties Conference(第九届亚洲热物理性能会议 ATPC 2010)
北京
英文
1167-1173
2010-10-19（万方平台首次上网日期，不代表论文的发表时间）