非随机双液模型
制冷剂
热力学
摩尔分数
绝对偏差
相对标准差
化学
蒸汽压
活度系数
分析化学(期刊)
材料科学
色谱法
物理化学
统计
数学
热交换器
检出限
物理
水溶液
作者
Xiaoyu Yao,Li Ding,Xueqiang Dong,Yanxing Zhao,Xian Wang,Jun Shen,Maoqiong Gong
标识
DOI:10.1016/j.ijrefrig.2020.09.008
摘要
New regulations have been approved that only low-GWP refrigerants will be used in developed countries. As mixed refrigerants especially positive azeotropic blends, R1243zf could be a promising substitute component for R134a with similar thermodynamic properties and low GWP. In this study, the VLE data for the binary system of R1243zf + R134a were measured with a recirculation method at six temperatures (243.150, 253.150, 263.150, 273.150, 283.150 and 293.150) K. The measurement uncertainties of the temperatures, pressures and compositions are estimated to be less than 5mK, 800 Pa, 0.005, respectively. All the experimental data were correlated by PR-vdW and PR-HV-NRTL model. The maximum average absolute relative deviation of pressure (AARDp) and average absolute deviation of vapor-phase mole fraction (AADy) for the PR-vdW model are 0.35% and 0.004, respectively, while the maximum AARDp and AADy for PR-HV-NRTL model are 0.29% and 0.004, respectively. Positive azeotropic behavior was exhibited at each temperature investigated.
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