三元混合制冷剂R32+R161+R1234yf气液相平衡实验研究  

Measurement of Vapor Liquid Equilibrium for Difluoromethane (R32)+Fluoroethane (R161) + 2,3,3,3-Tetrafluoroprop-1-ene (R1234yf)

作　　者：杨焘[1] 胡晓振 孟现阳[1] 吴江涛[1] Yang Tao;Hu Xiaozhen;Meng Xianyang;Wu Jiangtao(Key Laboratory of Thermo-Fluid Science and Engineering of Ministry of Education,Xi＇an Jiaotong University,Xi＇an,710049,China)

机构地区：[1]西安交通大学热流科学与工程教育部重点实验室,西安710049

出　　处：《制冷学报》2018年第6期17-23,共7页Journal of Refrigeration

基　　金：国家自然科学基金(51476130)项目;高等学校学科创新引智计划(B16038)项目~~

摘　　要：本文研究了含R1234yf的三元混合制冷剂的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AAD_p为0.34%,系统组分R32和R161的气相摩尔分数平均绝对偏差AAD_y_1和AAD_y_2分别为0.002和0.001。In the study, we focused on the vapor-liquid equilibrium property of the temary system of R32 ＋ R161 ＋ R1234yf. The va- por-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 ti＇actions were 10 inK, 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 temary vapor-liquid equilibrium proper6es by using the parameters of the binary mixture （ i. e., R32 ＋ R161, R32 ＋ R1234yf, and R161 ＋ R1234yf）. The average absolute deviation of pressure AADp （ av- erage 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.

关 键 词：混合制冷剂热物理性质 气液相平衡:实验 

分 类 号：TB612[一般工业技术—制冷工程] TK124[动力工程及工程热物理—工程热物理]