In a low-pressure centrifugal cooling system, what is the function of the purge unit?

In a low-pressure centrifugal cooling system, the purge unit plays a crucial role in maintaining the efficiency and effectiveness of the system by removing moisture. Moisture can significantly affect the performance of refrigerants, leading to problems such as corrosion, freezing of refrigerant, and decreased thermal efficiency.

The purge unit is designed to separate and eliminate any non-condensable gases and moisture that may accumulate within the system. By doing so, it ensures that the refrigerant remains in a pure state, which is essential for optimal cooling performance. This is particularly important in low-pressure systems, where the presence of moisture can lead to issues such as acid formation, which damages the system's components over time.

This function supports the overall integrity and operational efficiency of the cooling system, ultimately prolonging its lifespan and reducing maintenance needs.