| 摘要: |
| 准确计算制冷剂-润滑油混合物的热力性能是分析和评价润滑油对压缩机性能影响的基础。根据厂家提供的实验数据，利用显式拟合关联式法和经验公式修正，本文分别给出了R32/POE和R32/PVE混合物工质对的物性计算模型，同时用相同的方法给出了R410A/POE的混合物溶解度与黏度计算模型来进行对比，模型对物性参数的预测值与厂家提供的实验数据的偏差均在5%以内，为压缩机优化设计及性能分析提供了准确、可靠的热力学模型。此外，在GX工况下对比分析了混合物溶解度随温度、压力的变化及混合物黏度随溶解度、温度、压力的变化，并对混合物的物性做了比较分析，对于制冷剂R32，PVE润滑油较POE润滑油更适用；而对于润滑油POE，R32与POE的混合性较R410A与POE的混合性好。 |
| 关键词: 制冷剂 润滑油 热物理性质 模型 |
| DOI： |
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| 基金项目: |
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| Calculation Models of Properties of POE/R32and PVE/R32 and the Properties Analysis |
| Shi Hongyan,Wu Jianhua |
| (School of Energy and Power Engineering，Xi’an Jiaotong University) |
| Abstract: |
| The accurate calculation of thermodynamic properties of refrigerant-oil mixture is the foundation to analyze and evaluate the influence of oil on compressor. Thermodynamic property models of R32/POE and R32/PVE are provided by explicit calculation method with the given experimental data and empirical formula. Simultaneously，the solubility and viscosity models of R410A/POE are given with the same method for comparative analysis. The maximum deviation of the predicted values of these models to experiment data is within 5 %，and these simple and reliable models provide accurate and reliable ways for the optimal design and performance analysis of compressors. Besides，the variations of solubility with temperature and pressure, and the variations of viscosity with solubility, temperature and pressure are analyzed at GX condition. In addition，the mixture properties are studied, the results show that PVE oil is better than POE when used with R32, and R32 is better than R410A when used with POE oil. |
| Key words: refrigerant lubricant oil thermodynamic property model |
