| abstract |
A refrigerating apparatus according to the present invention can suppress deterioration of refrigerating machine oil and corrosion of an expansion valve. A refrigeration apparatus includes a compressor, condensers, an expansion mechanism, and evaporators. The refrigeration apparatus 1 uses refrigerant including R32 and refrigeration oil for lubricating the compressor 2. The refrigerating machine oil is blended with an acid scavenger having an addition amount of 1.0 wt% to 5.0 wt%. The amount of air mixed into the refrigeration apparatus 1 is controlled to 500 ppm or less with respect to the amount of refrigerant charged. The amount of water mixed in the refrigeration apparatus 1 is controlled to 300 ppm or less with respect to the amount of refrigerant charged. The discharge gas temperature of the refrigeration apparatus 1 is controlled to 120 ° C. or lower. [Selection] Figure 1 |