In-Row Precision Air Conditioning Air Supply Method

Cold aisle side supply, hot aisle rear return (Front Supply / Rear Return)

Airflow Path

1. The unit is installed between two rows of server racks, with the front of the unit facing the cold aisle and the back facing the hot aisle;

2. Internal EC fans blow cooled air horizontally from the front of the unit, directly supplying the front air intake of the server racks;

3. High-temperature hot air exhausted from the GPUs/servers enters the hot aisle from the rear of the racks and is directly drawn into the rear air intake of the unit;

4. The hot air is cooled by heat exchange in the coils, completing a short-circuit, closed-loop airflow.

Key Advantages

1. Complete isolation of hot and cold airflows, virtually no mixing, completely eliminating hot spots at the top of the rack, suitable for high-density AI racks ranging from 30 to 80 kW;

2. Extremely short air ducts, low static pressure loss of fans, low fan power consumption, and superior overall PUE for the data center;

3. Perfectly compatible with hot and cold aisle enclosed systems, making it the preferred solution for AI computing centers and HPC supercomputing;

4. No raised floor required, suitable for both new and old data center renovations.

Hot aisle supply, cold aisle return (rarely used)

Airflow Path

Cold air exits from the back of the unit (hot aisle side), while hot air returns to the unit from the front (cold aisle side).

Applicable Scenarios

Only recommended for customized projects with limited server room space or special aisle layouts. Not recommended for standard projects:

- Prone to hot air recirculation short-circuiting;

- Lower heat dissipation stability in high-density server racks compared to forward air supply.