R245FA工质应该用何种冷冻油? r245fa选择环保型多元醇酯冷冻机油即可,根据工况选择粘度,一般poe68 即可! typical properties criteria value method viscosity cst @ 40° c 67.1 astm d-445 viscosity cst @ 100° c 10.9 astm d-445viscosity index 155 astm d2270 acid value, mg koh/gm 0.05 astm d-974 moisture, ppm 50 astm d-1744 specific gravity @ 60°f/15.6° c 0.835 astm d-4052 density 6.96 flash point, °f/°c 550/288 astm d-92 pour point, °f/°c -38/-39 astm d-97 notice: the information and statements above are based on information we believe to be reliable; however, we expressly do not represent, warrant or guarantee the accuracy, completeness, or reliability of the same.查看更多