Refrigeration oils are the working fluids in the cooling system and the Refrigeration oils are used in moving mechanical parts and this lubricant minimizes the wear by reducing friction where the oil maintains the seal between the low and high sides of the compressors.
Proper lubrication of the parts of the compressor like valves, mating scrolls, vanes, and screws will seal and avoiding refrigerant pressure mixing in the lower side of the system, however, the piston rings in reciprocating and rotating vanes rely on the lubricant to prevent the blows around the pistons and vane.
The lubricant also acts as a heat transfer and noise damper in the moving and rotating parts with the Compressors
The solubility of the lubricant should be compatible with the lubricants as there will be a small number of leakages that tend to mix with the refrigerant
Mineral oil Refrigeration Oils
Synthetic Oil Refregeration Oils
Alkylbenzene based Refregeration Oil
Polyalphaolefin Based Refregeration Oils
Polyol Ester based Refregeration Oils
Polyalkylene Based Refrigeration oils
CO2 Refregeration Oils
HFO Refregeration oils
Food grade Refrigeration oils
Fire-resistant Refrigeration Oils
Some are also known as below
POE Refregeration Oils
PAG Refregeration Oils
POE-C Refregeration Oils
PAG-C Refregeration oils
The Other ASHRAE NAME