Experimental data and Cubic-Equation-Of-State calculations of CO2/R-161 Vapor-Liquid equilibrium
| Autor: | Fernando F. Czubinski, Jader R. Barbosa, Carlos J. Noriega Sanchez, Alexandre K. da Silva |
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| Rok vydání: | 2022 |
| Předmět: |
Equation of state
Work (thermodynamics) Chemistry Thermodynamics Mole fraction Atomic and Molecular Physics and Optics Refrigerant symbols.namesake Volume (thermodynamics) symbols Vapor–liquid equilibrium General Materials Science Physical and Theoretical Chemistry van der Waals force Mixing (physics) |
| Zdroj: | The Journal of Chemical Thermodynamics. 165:106635 |
| ISSN: | 0021-9614 |
| Popis: | Motivated by the revived interest in mixtures of carbon dioxide and synthetic refrigerants as working fluids for power generation cycles, this work presents novel experimental data on bubble-point pressure for carbon dioxide (CO2/R-161) mixtures. The analysis, which is performed in a synthetic PVT cell of variable volume, considers nominal CO2 mole fractions of 0.15, 0.30, 0.46, 0.54, 0.70 and 0.85, and mixture temperatures ranging from 283 K and 343 K, in steps of 10 K. The experimental data are used to adjust the empirical parameters of the Peng-Robinson equation of state along with the van der Waals or the Wong-Sandler mixing rules. The results show that a combination of the Peng-Robinson with either mixing rule returns low average absolute deviations, namely 1.75 % and 1.36 % for the van der Waals and Wong-Sandler mixing rules, respectively, hence validating the equation of state for phase equilibrium calculations of such a mixture. |
| Databáze: | OpenAIRE |
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