What is the typical recirculation rate (RR) for most DX systems?

The typical recirculation rate for most direct expansion (DX) systems is indeed a 1:1 ratio. This indicates that the volume of air returned to the system for cooling is equal to the volume of air being supplied to the space being conditioned. A 1:1 recirculation rate is generally efficient for maintaining balanced airflow and achieving effective temperature control within the conditioned area.

In a DX system, proper airflow is crucial for optimal performance, and having an equal recirculation rate helps to ensure that the treated air effectively mixes with the return air. This balance aids in providing consistent temperature and humidity levels, which is essential for comfort and system efficiency.

Understanding the typical recirculation rate highlights the importance of designing HVAC systems that accommodate the specific needs of the environment they serve, ensuring that the systems operate efficiently and effectively.