What is the primary function of a filter dryer in a refrigeration system?

The primary function of a filter dryer in a refrigeration system is to remove moisture and contaminants. In refrigeration applications, moisture can be detrimental, leading to issues like corrosion, ice formation, and efficiency losses. The filter dryer serves two key roles: it filters out particulate contaminants that can clog the system and reduces or eliminates moisture that could react with refrigerants or lubricants.

Moisture in the system can cause serious problems such as the formation of acid, which can damage components; or the development of ice that hampers fluid flow. By ensuring that the refrigerant remains dry and free from debris, the filter dryer plays a crucial role in maintaining the longevity and reliability of the refrigeration system.

The other functions listed, such as cooling the refrigerant, regulating pressure, and enhancing efficiency, may be indirectly affected by the cleanliness and dryness maintained by the filter dryer, but these are not its primary functions.