Abstract R1234yf and R1234ze(E) as green refrigerants have attracted wide attention. Phase behavior of refrigerant/oil and oil circulating mass fraction are critical to the performance and reliability of refrigeration systems. Using isochoric saturation method, the solubilities were measured for R1234yf and R1234ze(E) in POE75 from 278.15 to 348.15 K. The pressure–enthalpy–vapor quality diagrams for pure refrigerants (R1234yf and R1234ze(E)) and refrigerant/oil mixtures (R1234yf/POE75 and R1234ze(E)/POE75), with various oil circulating mass fractions, are presented where the solubility is correlated by the NRTL model and the enthalpy of the refrigerant/oil is calculated by the model reported by Youbi-Idrissi. The enthalpy of refrigerant/oil, enthalpy change ratio and non-evaporated quantity were analyzed at different oil circulating mass fractions and superheats. The results show that the enthalpies of refrigerant/oil are always lower than those of pure refrigerant under various oil cycle mass fractions. The enthalpy change ratio increases with the increase of superheat and decreases with the increase of oil circulating mass fraction. The non-evaporated quantity decreases with the increase of superheat and increases with the increase of oil circulation mass fraction.

中文翻译：

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R1234yf 和 R1234ze(E) 与 POE 润滑剂的相平衡和蒸发器上的热力学性能

摘要 R1234yf和R1234ze(E)作为绿色制冷剂受到广泛关注。制冷剂/油的相行为和油循环质量分数对制冷系统的性能和可靠性至关重要。使用等容饱和法，测量了 R1234yf 和 R1234ze(E) 在 POE75 中的溶解度从 278.15 到 348.15 K。纯制冷剂（R1234yf 和 R1234ze(E)）和制冷剂/油混合物（R1234f）的压力-焓-蒸汽质量图/POE75 和 R1234ze(E)/POE75)，具有不同的油循环质量分数，其中溶解度与 NRTL 模型相关，制冷剂/油的焓由 Youbi-Idrissi 报告的模型计算。制冷剂/油的焓，分析了不同油循环质量分数和过热度下的焓变比和未蒸发量。结果表明，在不同的油循环质量分数下，制冷剂/油的焓始终低于纯制冷剂。焓变比随着过热度的增加而增加，随着油循环质量分数的增加而减少。未蒸发量随着过热度的增加而减少，随着油循环质量分数的增加而增加。