#Industry News
The CDU, the Thermal Exchange Hub of Liquid-Cooled Data Centers
Two Isolated Circuits, One Plate Wall: How the CDU Decides Whether Server Heat Leaves Stable or Spills Into the Room
The CDU turns from a supporting device into the thermal exchange hub of liquid cooling: it stands between the server-side loop and the room side, two isolated circuits crossing only the plate exchanger, so it neither generates heat nor finally rejects it but decides whether the energy leaves in a stable and controllable way. The hard part is not making the pump turn but holding flow and pressure on every branch while dozens of high-power servers change load at once. AI cabinets pushed thermal management to the system level, the power management company launching a 2.5-megawatt unit in January 2026 with the family extendable beyond 10 megawatts and a 3.5-megawatt unit in September, while a motion-control maker published a 300-kilowatt 4U in-rack CDU prototype for production in early 2027. EXTRCOOL provides one-stop liquid cooling solutions.
