Refrigeration oils are crucial components in refrigeration systems, serving as lubricants for the compressor, the heart of the system. These oils ensure smooth mechanical operations and help in heat transfer. Unlike typical lubricants, refrigeration oils must be compatible with the refrigerant used in the system. They vary in viscosity and chemical composition, depending on the type of compressor and the operating conditions of the system. The choice of oil impacts the efficiency, reliability, and longevity of refrigeration equipment. It must minimize wear and corrosion inside the compressor, handle the thermal and chemical stresses of the system, and maintain good solubility with refrigerants to ensure efficient operation.