What purpose does a drier serve in a refrigeration system?

In a refrigeration system, a drier plays a crucial role by removing moisture and contaminants from the refrigerant. Moisture can lead to various problems such as the formation of ice in the expansion device, corrosion of components, and degradation of lubrication oil, which may ultimately compromise the efficiency and reliability of the system. By ensuring that the refrigerant is free from moisture and other harmful substances, the drier helps maintain the system's performance and longevity.

Additionally, the presence of contaminants can affect the heat transfer efficiency in the evaporator and condenser, leading to increased energy consumption and reduced cooling effectiveness. Therefore, having a properly functioning drier is essential for the overall health of the refrigeration system, enabling it to operate smoothly and effectively.