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Vapor–Liquid Equilibria for the Binary and Ternary Systems of Difluoromethane (R32), 1,1-Difluoroethane (R152a), and 2,3,3,3-Tetrafluoroprop-1-ene (R1234yf)
Journal of Chemical & Engineering Data ( IF 2.0 ) Pub Date : 2018-02-09 00:00:00 , DOI: 10.1021/acs.jced.7b00950
Tao Yang 1 , Xiaozhen Hu 1 , Xianyang Meng 1 , Jiangtao Wu 1
Affiliation  

The combination of difluoromethane (R32), 1,1-difluoroethane (R152a), and 2,3,3,3-tetrafluoroprop-1-ene (R1234yf) could be a potential substitute for hydro-fluorocarbon refrigerants. Reliable vapor liquid equilibrium (VLE) data are important thermodynamic data in evaluating the performance of refrigeration cycles and determining their optimal compositions. In this work, we measured the VLE data for binary mixtures of R32 + R152a and R152a + R1234yf, and ternary system of R32 + R152a + R1234yf. The measurements were carried out by using the AnTLcirCapValVis analytical method over the temperature range from 283.15 to 323.15 K. The standard uncertainties of temperature, pressure, and mole fractions are 10 mK, 0.5 kPa, and 0.005, respectively. The Peng–Robinson–Stryjek–Vera equation of state combined with the Wong–Sandler mixing rule and the nonrandom two-liquid activity coefficient model was employed to correlate the parameters of binary mixtures and predict the ternary VLE property. The predicted VLE data and K-value for the ternary system show good agreement with the experimental results.

中文翻译:

二氟甲烷(R32),1,1-二氟乙烷(R152a)和2,3,3,3-四氟丙-1-烯(R1234yf)的二元和三元体系的汽液平衡

二氟甲烷(R32),1,1-二氟乙烷(R152a)和2,3,3,3-四氟丙-1-烯(R1234yf)的组合可能替代氢氟烃制冷剂。可靠的气液平衡(VLE)数据是评估制冷循环性能并确定其最佳组成的重要热力学数据。在这项工作中,我们测量了R32 + R152a和R152a + R1234yf的二元混合物以及R32 + R152a + R1234yf的三元体系的VLE数据。通过使用AnTLcirCapValVis进行测量分析方法在283.15至323.15 K的温度范围内。温度,压力和摩尔分数的标准不确定度分别为10 mK,0.5 kPa和0.005。将Peng–Robinson–Stryjek–Vera状态方程与Wong-Sandler混合规则和非随机两液活度系数模型相结合,以关联二元混合物的参数并预测三元VLE性质。三元体系的预测VLE数据和K值与实验结果吻合良好。
更新日期:2018-02-09
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