A liquid load bank is not a CDU: First-Principles Data Center Engineering Protocol
Why a rack-side liquid load bank is a thermal and hydraulic stand-in for an NVL72 rack—never a substitute for the facility Coolant Distribution Unit (CDU).
A Field Guide to Interface Boundaries, P&ID Hydraulics, Thermal Envelopes, and Acceptance Sheets
Independent engineering checklists, mathematical balance equations, and refusal criteria derived from this field volume.
Why a rack-side liquid load bank is a thermal and hydraulic stand-in for an NVL72 rack—never a substitute for the facility Coolant Distribution Unit (CDU).
Why marketing claims like '30x better than air' cannot size a liquid load bank or pipe manifold without explicit mass flow, PG25 specific heat, and Delta-T.
The two mandatory engineering documents—the Requirements List and the Prototype Acceptance Sheet—required before fabricating a high-density liquid load bank.
How to separate rack-side load bank prototype acceptance gates (Gate 1–4) from facility hall integrated systems testing and GPU software validation.
A field guide to specifying and accepting a liquid load bank for NVL72 AI racks. Includes Danfoss FD83 pressure drop equations, thermal dissipation limits, and acceptance sheets.