R32+R1234yf+R1234ze（E）混合制冷剂气液相平衡实验研究

doi:10.11949/0438-1157.20211314

摘要/Abstract

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

中图分类号:

TK 121

孙裕坤, 杨焘, 吴江涛. R32+R1234yf+R1234ze（E）混合制冷剂气液相平衡实验研究[J]. 化工学报, 2022, 73(3): 1063-1071.

Yukun SUN, Tao YANG, Jiangtao WU. Measurement of vapor-liquid equilibrium for R32+R1234yf+R1234ze(E)[J]. CIESC Journal, 2022, 73(3): 1063-1071.

图/表 1

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