Calculators › Rack cooling feasibility

Rack cooling feasibility

Test a rack and facility envelope using rack power, the named liquid/residual-air heat split, qualified airflow and rear-door conditions, rack water availability, room residual capacity, and the roadmap case. Rack kW alone never selects the technology.

ScenarioNVIDIA GB200 NVL72 · 56 active / 72 installed GPUs · 0.13 MW IT · $5M programguide defaults (asof 2026-07)Edit the shared scenario →

Rack cooling feasibility

Current rack power (screening input)kW/rackUpper roadmap rack power (screening input)kW/rackUse the highest named configuration the hall must support.Heat captured to liquid% of rack heatUse the named OEM rack/server heat split; do not infer this from rack kW.Qualified airflow/inlet envelope proven?Requires the named rack/server airflow, pressure, inlet and containment case.Rack water connection available?Includes a qualified TCS/FWS/CDU or rear-door water path.Rear-door system qualified?A rated door plus proven airflow, water conditions and room residual-heat path.Room residual-air capacitykW/rackMaximum residual rack heat the room-air system can remove in the declared redundancy case.

direct liquid cooling with air removal of the declared residual heat is feasible

Current liquid / residual-air split114.8 / 17.2 kW

Future residual-air load17.2 kW vs 20 kW limit

This is a preliminary envelope screen, not equipment qualification. Rack kW is one input alongside component heat flux, the named OEM heat split, airflow/inlet limits, supported TCS/FWS or entering-water conditions, room residual rejection, climate, serviceability, redundancy, and the refresh tail. Use product capacity only at its stated air/water temperatures, flow, pressure, fan state, containment, and heat-capture target → Ch 5.4.

These are transparent screening estimates, not final designs, financial advice, or project approvals. Replace every default with current project data and have the responsible project authorities validate the result. You can save, share a permalink, or export to CSV; see the full calculator suite.