Compressors in refrigeration systems are primarily sized based on which requirement?

Compressors in refrigeration systems are primarily sized based on the CFM (cubic feet per minute) requirement. This measurement indicates the volume of air that needs to be moved or circulated through the system to maintain desired temperatures and efficiency levels. Sizing a compressor according to the CFM ensures that it can adequately supply the necessary airflow for the entire refrigeration system to function effectively.

CFM calculations consider various factors such as the cooling load, indoor and outdoor temperature profiles, and the specific application for which the refrigeration system is designed. By focusing on the airflow requirement, technicians can ensure the compressor will deliver sufficient capacity to achieve the desired cooling effect without overloading the system or leading to inefficiencies.

While temperature differential, refrigerant type, and system pressure are also important considerations in the overall design and efficiency of a refrigeration system, they do not directly determine the compressor's size in the same way that the CFM requirement does.