Difluoromethane (R32) as a refrigerant with zero ozone depletion potential and low global warming potential has received extensive attention in the refrigeration industry. The phase behavior of refrigerant/lubricant mixtures has a critical effect on the performance and operation safety in a compression-refrigeration system. Using the isochoric saturation method, the solubilities of refrigerant R32 in POE75 and in PVE68 lubricant were measured from 278.15 to 348.15 K. The results indicate that there is no sediment, no color change, and no stratification during the whole experiment. The nonrandom two-fluid equation was used to correlate the experimental data. For both oils, solubilities of R32 increase with the decrease of temperature and increase of pressure. R32 is more soluble in PVE than in POE. In addition, the Henry’s constants were calculated for R32 in both oils at different temperatures.

中文翻译：

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R32在多元醇酯和聚乙烯醚中的溶解度从278.15至348.15 K

具有零臭氧消耗潜能和低全球变暖潜能的制冷剂二氟甲烷（R32）在制冷行业受到广泛关注。制冷剂/润滑剂混合物的相行为对压缩制冷系统的性能和操作安全性具有关键影响。使用等容饱和法，测量了制冷剂R32在POE75和PVE68润滑剂中的溶解度为278.15至348.15K。结果表明，在整个实验过程中，没有沉积物，没有颜色变化，也没有分层。非随机两流体方程用于关联实验数据。对于两种油，R32的溶解度均随温度降低和压力升高而增加。R32在PVE中比在POE中更易溶。此外，