Experimental data and Cubic-Equation-Of-State calculations of CO2/R-161 Vapor-Liquid equilibrium

被引：5

作者：

Sanchez, Carlos J. Noriega ^{[1
,2
]}

Czubinski, Fernando F. ^{[1
]}

Barbosa Jr, Jader R. Jr ^{[1
]}

da Silva, Alexandre K. ^{[1
]}

机构：

[1] Univ Fed Santa Catarina, Dept Mech Engn, BR-88040900 Florianopolis, SC, Brazil

[2] Francisco de Paula Santander Univ, Dept Mech Engn, Ocana 546552, Colombia

来源：

JOURNAL OF CHEMICAL THERMODYNAMICS | 2022年 / 165卷

关键词：

Power cycles; Carbon dioxide; Fluoroethane; R-161; Phase-equilibrium; Bubble-point pressure; Equation of state; ORGANIC RANKINE-CYCLE; BINARY ZEOTROPIC MIXTURES; WASTE HEAT-RECOVERY; CARBON-DIOXIDE; PHASE-EQUILIBRIUM; THERMOECONOMIC ANALYSIS; THERMODYNAMIC ANALYSIS; WORKING FLUIDS; ENERGY; OPTIMIZATION;

D O I：

10.1016/j.jct.2021.106635

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

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. (C) 2021 Elsevier Ltd.

引用

页数：9

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