Boyd RAL300 In-Rack CDU — 160 kW to 300 kW Liquid-to-Liquid Cooling in 4U

Specifications

Overview

The Boyd RAL series puts a liquid-to-liquid coolant distribution unit inside the rack itself. The RAL110-04U19 covers 80 kW at an 8 deg C approach (110 kW at 11.5 deg C) and the RAL300-04U21 covers 160 kW at 5 deg C (300 kW at 9 deg C), both in a 19-inch 4U chassis that occupies rack space rather than floor space.

The secondary technology-cooling loop runs between 10 and 55 deg C and accepts water, EGW or PGW. RAL110 moves 21.1 GPM (80 LPM) at 20.8 psi; RAL300 doubles that to 42.3 GPM (160 LPM) at 24.6 psi. Because the unit mounts in-rack, it suits single-rack AI nodes and small clusters where running a full in-row plant is not justified, and where facility water is already available at the rack.

Key Benefits

80-300 kW of liquid-to-liquid capacity inside the rack removes the need for an in-row plant on smaller deployments. 4U form factor preserves rack-front space. 10-55 deg C secondary loop supports both chilled-water and warm-water operation. Water, EGW and PGW compatibility matches existing chemistry.

Applications

In-rack AI inference nodes, HPC clusters, lab and edge data centers with facility water, and phased liquid-cooling rollouts where only a few racks are converted at a time.

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