| 摘要: |
| 本文研究了含R1234yf的三元混合制冷剂进行气液相平衡性质和模型，利用基于液相单相循环法搭建的气液相平衡实验装置，对温度范围为283.15~323.15 K的三元混合制冷工质R32+R161+R1234yf进行了实验研究，共得到45组实验数据。同时采用Peng-Robinson-Stryjek-Vera(PRSV)状态方程结合Wong-Sandler(WS)混合法则和Non-Random Two-Liquid(NRTL)活度系数模型，在前期工作得到的二元混合工质的模型参数的基础上，对三元混合工质气液相平衡性质进行推算。最后将模型推算结果与实验数据进行对比，结果表明系统压力平均绝对偏差AADp为0.34%，系统组分R32和R161的气相摩尔分数平均绝对偏差AADy1和AADy2分别为0.002和0.001。 |
| 关键词: 混合制冷剂 热物理性质 气液相平衡 实验测量 |
| DOI： |
| 投稿时间：2017-12-07
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| 基金项目:国家自然科学基金(51476130)和高等学校学科创新引智计划(B16038)项目资助。 |
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| Measurement of Vapor Liquid Equilibrium for Difluoromethane (R32) +Fluoroethane (R161) + 2,3,3,3-Tetrafluoroprop-1-ene (R1234yf) |
|
Yang Tao, Hu Xiaozhen, Meng Xianyang, Wu Jiangtao
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| (Key Laboratory of Thermo-Fluid Science and Engineering of Ministry of Education, Xi'an Jiaotong University) |
| Abstract: |
| In the study, we focused on the vapor-liquid equilibrium property of the ternary system of R32+R161+R1234yf. The vapor–liquid equilibrium data was measured via a liquid-circulation apparatus at temperatures from 283.15 K to 323.15 K. The standard uncertainties of temperature, pressure, and mole fractions were 10 mK, 0.5 kPa, and 0.005, respectively. The Peng–Robinson–Stryjek–Vera (PRSV) equation of state (EOS) combined with the Wong–Sandler (WS) mixing rule and non-random two-liquid (NRTL) activity coefficient model were employed to predict the ternary vapor–liquid equilibrium properties by using the parameters of the binary mixture (i.e., R32+R161, R32+R1234yf, and R161+R1234yf). The average absolute deviation of pressure AADp (average absolute deviation) is 0.34%. Additionally, the average absolute deviation of vapor phase mole fractions for R32 (AADy1) and R161 (AADy2) are 0.002 and 0.001, respectively, and thus the predicted values for the ternary system exhibit good agreement with the experimental results. |
| Key words: mixed refrigerants thermophysical properties vapor-liquid equilibrium experimental measurement |
