| abstract |
An object of the present invention is to improve the wear resistance of a compressor for refrigeration and air conditioning, and to realize high efficiency of a refrigeration air conditioner using the compressor. A refrigerant containing 2,3,3,3-tetrafluoropropene, 1,3,3,3-tetrafluoropropene, and the like includes a refrigerating machine main agent such as polyol ester oil and an added polyol ester oil. A compressor for refrigerating and air conditioning in which refrigeration oil is mixed and sealed is used. The composition of the added polyol ester oil is 1 to 30% by weight. [Selection] Figure 1 |