Misciblity characteristics of several low GWP refrigerants and typical lubricating oils.

This paper describes the miscibility characteristics of the refrigerants HFCs (R227ea, R134a, R32, R161, R152a, R245fa), HCFCs (R22, R142b), CmHnOx (RE170), and their blends, with several types of lubricating oils, including mineral oils (MO) and polymer polyol ester oils (POE). A new experimental system was designed and built based on the ground of the related standards. Firstly, the typical statuses and micro-phenomenon of refrigerants and lubricants solutions were presented graphically; Secondly, the miscibility of MO and HCFCs (both pure and mixture refrigerants) was tested, compared and analyzed; In addition, after testing the miscibility of several HFCs with MO or POE oils, an exceptional case of successfully using the mineral oils for the HFC refrigerant was discussed.

本论文阐述了氢氟烃（HFCs）类制冷剂（涵盖R227ea、R134a、R32、R161、R152a、R245fa）、氢氯氟烃（HCFCs）类制冷剂（涵盖R22、R142b）以及碳氢氧化合物（CmHnOx，代号RE170）类制冷剂及其混合工质，与矿物油（MO）、聚合型多元醇酯润滑油（POE）等多种润滑油的互溶特性。研究团队依据相关标准设计并搭建了一套新型实验系统。首先，以图形化方式呈现了制冷剂与润滑油混合溶液的典型状态及微观现象；其次，针对矿物油与氢氯氟烃类制冷剂（含纯制冷剂及混合工质）的互溶性开展了测试、对比与分析工作；此外，在完成多款氢氟烃与矿物油或多元醇酯润滑油的互溶性测试后，本文探讨了一则可采用矿物油适配氢氟烃制冷剂的特殊案例。