What is the purpose of the receiver/drier in the aircraft's cooling system?

The receiver/drier's primary function within an aircraft's cooling system is indeed to filter the liquid refrigerant and remove moisture. In a typical refrigeration cycle, moisture can lead to various issues, such as freezing within the components of the cooling system or corroding parts. The receiver/drier contains desiccant material, which absorbs any moisture present in the refrigerant. Additionally, it serves to filter out any debris or contaminants that might have entered the system, ensuring that only clean, dry refrigerant circulates.

This role is vital for maintaining the efficiency and longevity of the cooling system and preventing potential failures due to moisture or impurities. By ensuring that the refrigerant is in optimal condition before it continues through the cycle, the receiver/drier helps the system operate effectively, contributing to the overall reliability of the aircraft's cooling system.