Comparative Study on Critical Points of Carbon Dioxide-Based Binary Mixtures View Full Text


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Article Info

DATE

2022-06-17

AUTHORS

Rui Sun, Hua Tian, Zirui Wu, Lingfeng Shi, Gequn Shu

ABSTRACT

Carbon dioxide (CO2)-based mixtures are potential working fluids of power cycles, the addition of another substance causes a change in the critical point compared to pure CO2, and the knowledge on critical points is important for the analysis and optimization of power cycles. In the present study, the critical points of binary mixture containing CO2 and one of other substances are studied, including n-alkane (C2–C6), isomer of pentane, alkan-1-ol (C1–C4), hydrofluorocarbon, hydrofluoroolefin and inert gas (xenon). The available experimental data of these binary mixtures are collected from literature and correlated by Chueh–Prausnitz and Redlich–Kister methods, and the applicability of each method is discussed. How the critical point of CO2 varies with the species and proportion of additives is studied by comparative analysis, and the applicability for different CO2 mixtures for meeting the corresponding critical temperature requirement of power cycles is discussed. At last, research suggestion for the critical points of CO2 mixtures that need to be focused on is also presented. More... »

PAGES

122

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http://scigraph.springernature.com/pub.10.1007/s10765-022-03048-3

DOI

http://dx.doi.org/10.1007/s10765-022-03048-3

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https://app.dimensions.ai/details/publication/pub.1148760990


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