Data Center Liquid Cooling PUE Impact Calculator

Evaluate how liquid cooling retrofits change power usage effectiveness and annual facility energy consumption using a weighted deployment share.

Steady-state IT load during the analysis window.
Cooling, distribution, and auxiliary loads before liquid cooling retrofit.
Expected support load once liquid cooling is deployed across the scoped footprint.
Share of IT load converted to liquid cooling. Defaults to 1.0 when blank.
Hours in scope for annual savings. Defaults to 8,760 if blank.

Engineering planning tool. Validate against detailed energy models and commissioning data before committing to retrofit savings targets.

Examples

  • IT load 4,800 kW, baseline support 3,000 kW, post-support 1,800 kW, 100% deployment, 8,760 h ⇒ Baseline PUE 1.625, post PUE 1.375, improvement 0.250, annual savings 10,512.00 MWh.
  • IT load 2,000 kW, baseline support 1,200 kW, post-support 700 kW, 60% deployment, 8,400 h ⇒ Baseline PUE 1.600, post PUE 1.450, improvement 0.150, annual savings 2,520.00 MWh.

FAQ

How should I estimate post-conversion support load?

Work with mechanical engineers to sum CDU pumps, rear-door units, coolant distribution losses, and any retained CRAH or chiller loads that continue serving non-converted halls.

Can I model phased rollouts?

Yes. Enter the deployment share that corresponds to the converted IT footprint for the period you are modelling. Re-run the calculator as each phase comes online.

Does this cover water usage effectiveness (WUE)?

No. The calculator focuses on electrical energy. Pair the result with facility water metering or the WUE walkthrough to capture water impacts.

Additional Information

  • Result unit: PUE change and MWh of annual facility energy savings.
  • Deployment share blends retrofitted and legacy areas; set to 1.0 when the entire whitespace is converted.
  • Assumes IT load remains constant; adjust inputs if workload migration alters IT power.

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