CDU · Coolant Distribution Unit
Heat exchanger plus pumps isolating the clean technology loop from facility water and providing leak containment.
Unit that pumps and conditions coolant to racks while isolating it from the facility water system.
Also written as: Coolant Distribution Unit
Current numbers
~165–236 L/minHPE liquid-load water-property example at 7–10 K rise; Chapter 5.1 owns the heat-balance method, and the selected rack/CDU envelope sets allowable flow
~16–52 wkCDU lead time (direct-to-chip liquid cooling) — 16–24 wk standard, 26–52 wk in the current queue
Addendum b approved 27 February 2026ASHRAE CDU test and rating boundary: external head and electrical inputs