三元混合制冷剂R290+R600a+N2汽液相平衡实验研究  

Measurement of vapor liquid equilibrium for ternaryrefrigerant mixture R290+R600a+N 2

作　　者：韩树康 祁影霞[1] 杨瀚宁 徐小雷 陶杰 王飞 刘业凤[1] HAN Shu-Kang;QI Ying-Xia;YANG Han-Ning;XU Xiao-Lei;TAO Jie;WANG Fei;LIU Ye-Feng(School of Energy and Power Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China;Technical Development Department of Haier Household Air Conditioning Product Headquarters,Qingdao 266101,China)

机构地区：[1]上海理工大学能源与动力工程学院,上海200093 [2]青岛海尔空调有限公司,青岛266101

出　　处：《原子与分子物理学报》2024年第6期161-169,共9页Journal of Atomic and Molecular Physics

基　　金：中央引导地方科技发展资金(YDZX20213100003002);国家重点研发计划(2020YFF0303901)。

摘　　要：在氢气液化工艺中,预冷循环是重要的一环,其中混合制冷剂(mixed refrigerant,MR)预冷循环是单位能耗比较低的,故对MR性能的优化显得尤为重要.为此利用液相单相循环法搭建汽液相平衡(Vapor-liquid equilibrium,VLE)实验系统,研究了R290+R600a+N_(2)三元体系的VLE性质,在273.15 K~323.15 K的温度范围内,对三元混合工质R290+R600a+N_(2)进行实验研究,并获得18组实验数据.同时使用Peng-Pobinson-Stryjek-Vera (PRSV)状态方程结合van der Waals(vd W)混合法则对R290+R600a、R290+N_(2)、R600a+N_(2)三组二元体系的VLE文献数据进行了拟合计算,得到二元交互作用系数,拟合结果与文献数据吻合良好.以此为基础,推算该三元体系的VLE性质.最后将实验数据与计算结果对比表明,体系压力平均相对偏差AARDp为0.85%,系统组分R290、R600a和N_(2)的气相平均绝对偏差AADy_(1)、AADy_(2)和AADy_(3)分别为0.0064、0.0027和0.0063,证明实验结果数据合理可靠,可以满足工程上的应用.In hydrogen liquefaction process, precooling cycle is an important link, among which the unit energy consumption of MR is relatively low, so it is particularly important to optimize the performance of MR. In this paper, the experimental system of VLE was built by the method of single-phase liquid phase cycle, and the properties of VLE in the ternary system R290+R600a+N_(2) were studied. The temperature range of 273.15 K~323.15 K was used to study the ternary mixing medium R290+R600a+N_(2) , and 18 groups of experimental data were obtained. At the same time, Peng-Pobinson-Stryjek-Vera (PRSV ) equation of state combined with van der Waals (vdW ) mixing rule was used to calculate the VLE properties of the ternary system. By comparing the experimental data with the calculated results, the average absolute relative deviation AARD p of the system pressure is 0.85%, and the average absolute deviation AAD y_(1) , AAD y_(2) and AAD y_(3) of the system components R290, R600a and N_(2) are 0.0064, 0.0027 and 0.0063, respectively.

关 键 词：混合制冷剂 汽液平衡 热力学性质 仪器标定 

分 类 号：TK121[动力工程及工程热物理—工程热物理]