Which type of oil is suitable for a refrigeration system using HFC refrigerant?

Polyol ester oil is the suitable choice for refrigeration systems using HFC refrigerants. This type of oil is specifically formulated to provide excellent lubrication and compatibility with HFC refrigerants, which are commonly used due to their environmentally friendly characteristics and efficiency.

HFC refrigerants, unlike older refrigerants such as CFCs, require synthetic oils like polyol esters or alkylbenzene oils for proper operation. These synthetic oils have better thermal stability, lower viscosity, and improved solubility with HFCs, which helps in maintaining efficient heat exchange and performance in the system.

Using polyol ester oil in HFC refrigeration systems ensures that the oil stays in solution with the refrigerant, reducing issues like oil return problems and ensuring effective lubrication of the compressor and other system components. This contributes to the longevity and reliability of the refrigeration system.

Other oils, such as mineral oil, are not compatible with HFCs due to their hydrocarbon base, which does not mix well with the synthetic nature of HFC refrigerants. Similarly, while alkylbenzene oil can be used with some HFCs, it may not provide the same level of performance or compatibility as polyol ester oil. Polyethylene glycol oil, on the other hand, is