What is the normal suction pressure for refrigeration systems, according to CIRO standards?

The normal suction pressure for refrigeration systems typically falls within the range of 28 to 36 PSIG, with 32 PSIG being a standard reference point in many practical scenarios. This pressure is considered optimal for ensuring efficient operation of the evaporator, promoting adequate heat absorption while maintaining the refrigeration cycle's effectiveness.

At this pressure, the refrigerant can effectively change from liquid to vapor within the evaporator coils, providing essential cooling. Operating outside of this range can lead to inefficiencies, such as inadequate cooling or increased energy consumption, impacting system performance and longevity.

In actual practice, factors such as ambient temperature, specific refrigerant type, and system design may alter what is deemed "normal." However, 32 PSIG is an accepted standard that reflects a balanced operational state across various conditions, aligning with industry guidelines and CIRO training.