From where does the purge unit take its suction?

The purge unit is designed to remove contaminants, typically non-condensables, from the refrigerant in a refrigeration system. It takes its suction from the condenser, which is a critical component where refrigerant changes from a gas to a liquid.

This suction point is important because any non-condensable gases that have entered the system can accumulate in the condenser and interfere with its efficiency and the effectiveness of the heat exchange process. By drawing from the condenser, the purge unit effectively ensures that these unwanted gases are expelled from the system, maintaining the integrity of the refrigeration cycle.

The other components mentioned — the compressor, evaporator, and accumulator — serve different roles. The compressor is responsible for pressurizing the refrigerant, the evaporator is where the refrigerant absorbs heat, and the accumulator stores excess refrigerant before it goes into the compressor. Thus, the condenser is the optimal choice for the purge unit's suction to maintain system performance and efficiency.