What is a purge unit's function in a refrigeration system?

The function of a purge unit in a refrigeration system is to remove non-condensable gases from the system. Non-condensable gases, such as air or moisture, can enter the refrigeration system and accumulate over time. Their presence can adversely affect the system's performance by reducing heat exchange efficiency, increasing pressure, and potentially causing compressor overheating or damage.

By effectively removing these non-condensable gases, the purge unit helps maintain optimal operating conditions, ensuring that the refrigeration system functions more efficiently and prolonging its lifespan. When non-condensable gases are eliminated, the refrigerant can cycle more smoothly, enhancing the overall effectiveness of the cooling process. This is crucial in commercial refrigeration applications, where reliability and performance are essential for food preservation and product integrity.