R32和R32/R1234yf混合工质黏度实验测量及模型  

Viscosity Measurements and Modeling for R32 and Binary Mixture of R32/R1234yf

作　　者：孟现阳 孙裕坤 曹法立 温辰阳 吴江涛 Meng Xianyang;Sun Yukun;Cao Fali;Wen Chenyang;Wu Jiangtao(School of Energy and Power Engineering, Key Laboratory of Thermo-fluid Science and Engineering of Ministry of Education, Xiran Jiaotong University, Xi’an, 710049,China)

机构地区：[1]西安交通大学能源与动力工程学院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2期39-47,共9页Journal of Refrigeration

基　　金：国家自然科学基金(51476130;51676159)资助项目~~

摘　　要：本文针对含HFOs类混合制冷剂黏度开展实验和模型研究。采用振动弦法黏度计对R32纯质和R32/R1234yf混合制冷剂黏度进行了实验测量,测量的温度范围分别为263~350 K、263~360 K,压力最高均为30 MPa,实验系统黏度测量的不确定度为2%。本文共获得了177组实验数据,利用得到的实验数据,基于硬球模型分别拟合了R32纯质和R32/R1234yf混合制冷剂黏度方程。R32纯质黏度实验数据与方程的平均绝对偏差为0.28%,最大绝对偏差为0.92%;R32/R1234yf混合工质黏度实验数据与方程的平均绝对偏差为0.69%,最大绝对偏差为2.09%。由此可见,实验数据和黏度模型吻合较好,为R32和R32/R1234yf混合制冷剂的应用研究提供了重要参考依据。There is current interest in developing working fluids with low global warming potential(GWP).One such fluid is2,3,3,3-tetrafluoroprop-1-ene(R1234yf).Although the thermophysical properties are critical for the selection of the potential refrigerant,only a few studies have been conducted on the thermophysical properties of refrigerant mixtures containing R1234yf.In this work,we focused on the viscosity of R32and the binary mixture of R32/R1234yf.The liquid viscosity of R32and binary mixture of R32/R1234yf were presented over the temperature ranges of(263to350)K and(263to360)K at pressures up to30MPa using the vibrating wire viscometer.The measurements of mixtures containing the mole fraction(0.2448,0.4108,0.6086and0.8356)of R32were carried out.The overall uncertainties of these results were±2.0%.The experimental results of the pure R32and the mixture were correlated with hard-sphere scheme.The average absolute deviations between the experimental results and the correlations were0.28%for R32and0.69%for R32/R1234yf,and the maximum absolute deviations were0.92%and2.09%,respectively.Comparisons between measurements of this work and literatures were also presented.

关 键 词：混合制冷剂 热物理性质 黏度 R32/R1234yf 

分 类 号：TB612[一般工业技术—制冷工程] TB64