摘要
为补充新型烯烃类环保制冷工质的表面张力实验数据,为其相变换热及两相流动计算提供可靠的基础物性数据,采用毛细管上升法测量了顺式-1,1,1,4,4,4-六氟-2-丁烯(R1336mzz(Z))纯质及其与POE润滑油(型号SL-32S)组成的混合物的表面张力。所研究的润滑油质量分数分别为0.130%、0.536%、1.040%,测量的温度范围为243~363 K,表面张力的测量标准不确定度小于0.16 mN·m^(-1)。结果表明:润滑油含量越高,混合物表面张力越大;与纯质表面张力相比,随着温度升高,混合物表面张力增幅逐渐减小。采用经验方程对实验数据进行拟合,结果发现,R1336mzz(Z)及R1336mzz(Z)/SL-32S混合物的表面张力计算值和实验数据的平均绝对偏差分别为0.07 mN·m^(-1)和0.14 mN·m^(-1)。所得结论可为R1336mzz(Z)应用于各类制冷/热泵系统提供基础的物性数据。
To complement the experimental data of the surface tension of new environmentallyfriendly olefin refrigerant,and to provide the reliable data for the calculation of phase change heat transfer and twophase flow,the surface tension of cis1,1,1,4,4,4hexafluoro2butene(R1336mzz(Z))and the mixtures with POE lubricant(type:SL32S)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 243K to 363K,and the measurement standard uncertainty for the surface tension was less than 0.16mN·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)/SL32S mixtures were 0.07mN·m^(-1)and 0.14mN·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.
作者
豆文博
张钰婧
王晓坡
DOU Wenbo;ZHANG Yujing;WANG Xiaopo(Key Laboratory of ThermoFluid Science and Engineering of MOE,Xi’an Jiaotong University,Xi’an 710049,China)
出处
《西安交通大学学报》
EI
CAS
CSCD
北大核心
2023年第8期86-91,共6页
Journal of Xi'an Jiaotong University
基金
国家自然科学基金重点资助项目(51936009)。
