| abstract |
The refrigeration apparatus 1 comprises a compressor 2, condensers 4 and 6, an expansion mechanism 5 and evaporators 6 and 4. The refrigeration apparatus (1) uses a refrigerant including R32 and a refrigeration oil for lubrication of the compressor (2). The refrigerator oil is blended with an acid scavenger which is added in an amount of 1.0 wt% to 5.0 wt%. The amount of air to be mixed into the refrigerating device 1 is controlled to 500 ppm or less with respect to the amount of charged refrigerant. The amount of water mixed into the refrigerating device 1 is controlled to 300 ppm or less with respect to the amount of the charged refrigerant. The temperature of the discharged gas of the refrigerating device (1) is controlled to 120 deg. |