化工学报 ›› 2022, Vol. 73 ›› Issue (3): 1063-1071.DOI: 10.11949/0438-1157.20211314

• 热力学 • 上一篇    下一篇

R32+R1234yf+R1234ze(E)混合制冷剂气液相平衡实验研究

孙裕坤1,2(),杨焘2,吴江涛2()   

  1. 1.中国制冷学会,北京 100142
    2.西安交通大学热流科学与工程教育部重点实验室,陕西 西安 710049
  • 收稿日期:2021-09-09 修回日期:2021-11-30 出版日期:2022-03-15 发布日期:2022-03-14
  • 通讯作者: 吴江涛
  • 作者简介:孙裕坤(1994—),女,硕士,助理工程师,yksun@car.org.cn
  • 基金资助:
    国家自然科学基金项目(51976164)

Measurement of vapor-liquid equilibrium for R32+R1234yf+R1234ze(E)

Yukun SUN1,2(),Tao YANG2,Jiangtao WU2()   

  1. 1.Chinese Association of Refrigeration, Beijing 100142, China
    2.Key Laboratory of Thermo-Fluid Science and Engineering of Ministry of Education, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, China
  • Received:2021-09-09 Revised:2021-11-30 Online:2022-03-15 Published:2022-03-14
  • Contact: Jiangtao WU

摘要:

基于液相循环法搭建的气液相平衡实验装置,在263.15~323.15 K温度范围内,实验测量了R32+R1234yf和R1234yf+R1234ze(E)二元混合物以及R32+R1234yf+R1234ze(E)三元混合物的气液相平衡数据,利用PRSV状态方程结合WS混合法则和NRTL活度系数模型进行关联拟合,获得二元混合工质的交互参数,并在其基础上预测了三元混合工质气液相平衡性质。计算结果与实验数据对比表明,二元体系R32+R1234yf和R1234yf+R1234ze(E)的压力平均绝对偏差分别为0.71%和0.20%,气相摩尔分数平均绝对偏差均约为0.0016,三元体系R32+R1234yf+R1234ze(E)的压力平均绝对偏差为0.82%,系统组分R32和R1234yf的气相摩尔分数平均绝对偏差均约为0.007。

关键词: 混合制冷剂, 气液相平衡, 实验测量, 方程拟合

Abstract:

In this work, the vapor-liquid equilibrium data of two binary mixtures R32+R1234yf and R1234yf+R1234ze(E), and ternary mixture R32+R1234yf+R1234ze(E) were experimentally studied by using a liquid-recirculating analytical apparatus at temperatures from 263.15 K to 323.15 K. A set of temperature independent parameters was correlated for three binary mixtures with the PRSV+WS+NRTL model. The average absolute relative deviation(AARD) of pressure between experimental data and calculated results for R32+R1234yf and R1234yf+R1234ze(E) were 0.71% and 0.20%, respectively. The average absolute deviation(AAD) of vapor-phase mole fractions were both around 0.0016. This model was also employed to predict the ternary VLE properties. The AARD of pressure for R32+R1234yf+R1234ze(E) was 0.82%. The AAD of vapor-phase mole fractions of the system components R32 and R1234yf were both about 0.007.

Key words: mixed refrigerants, vapor liquid equilibrium, experimental measurement, correlation

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