Experimental Measurement of Surface Tension of R1336mzz(Z)and Its Mixtures with Polyolester Lubricant

被引：0
|
作者：
Dou W. [1 ]
Zhang Y. [1 ]
Wang X. [1 ]
机构：
[1] Key Laboratory of Thermo-Fluid Science and Engineering of MOE, Xi'an Jiaotong University, Xi'an
来源：
Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University | 2023年 / 57卷 / 08期
关键词：
polyolester lubricant; refrigerant R1336mzz(Z); surface tension;
D O I：
10.7652/xjtuxb202308009
中图分类号：
学科分类号：
摘要：
To complement the experimental data of the surface tension of new environmentally-friendly olefin refrigerant, and to provide the reliable data for the calculation of phase change heat transfer and two-phase flow, the surface tension of cis-1, 1, 1, 4, 4, 4-hexafluoro-2-butene(R1336mzz(Z))and the mixtures with POE lubricant(type: SL-32S)was measured using the differential capillary rise method. The mass fractions of the studied lubricant for the mixtures are 0.130%, 0.536%, and 1.040%, respectively. The measuring temperature was from 243 K to 363 K, and the measurement standard uncertainty for the surface tension was less than 0.16 mN·m-1. Results show that the surface tension of the mixtures increases with the lubricant concentration. Moreover, the surface tension of the mixtures shows a reduced increase amplitude as the temperature rises, compared with that of pure R1336mzz(Z). The experimental surface tension was correlated as the empirical expression, and the average absolute deviations between the experimental data and the calculated values for the pure R1336mzz(Z)and R1336mzz(Z)/SL-32S mixtures were 0.07 mN·m-1and 0.14 mN·m-1, respectively. The obtained results can provide the essential surface tension data for the further application of R1336mzz(Z)to various types of refrigeration/heat pump systems. © 2023 Xi'an Jiaotong University. All rights reserved.
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页码：86 / 91
页数：5
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