HFC二元混合物表面张力关联式

Surface tension correlation for binary HFC mixtures

氢氟烃 (HFC)混合物作为长期性的制冷剂替代物 ,其表面张力数据对于制冷空调设备的设计计算十分重要。该文综合国际上现有的混合物表面张力的实验数据 ,给出了HFC二元混合物统一形式的表面张力关联式 ,可以在广阔的温度范围内高精度地再现实验数据 ,还能精确计算相关纯工质的表面张力。与现有的混合物关联式进行了比较分析。

Surface tension is a basic thermophysical property which influences the heat transfer and fluid bubbles attached to the surface. Surface tension data for hydrofluorocarbon (HFC) mixtures, which are considered as refrigerant alternatives, is necessary for proper design of air conditioners and refrigeration equipment. The update available experimental data was used to develop correlations for the surface tension of HFC mixtures. The correlations are also able to represent the surface tension of corresponding pure refrigerants. The correlations were compared with correlations of literatures. These correlations accurately represent the experimental data over a wide temperature range with accuracy that can satisfy the requirements of engineering applications.