AI Data Center Liquid Cooling Load Calculator
How much coolant flow does an AI hall need — and how much heat is still left for the air side? Cold plates never take all of it, and the quarter they miss still needs real plant. That residual is reported here as its own number.
The IT load
Sets a typical density — replace it with your real figure
Essentially all of it becomes heat
kW
nos
Advanced / Custom Input — the load
AI training runs near flat out. Inference is spikier.
%
Not every rack peaks together. 100% means design for all of them at once.
%
How is it cooled?
Cold plates do not capture all the heat. Whatever they miss leaves the rack as hot air and still needs somewhere to go.
Filled in from the method — use the vendor’s figure for your rack
%
Advanced / Custom Input — the equipment
Used to work out how many you need, plus a spare.
kW
N+1 adds one spare unit; 2N doubles everything.
The coolant loop
A bigger rise means less flow for the same heat
K
Glycol carries less heat per litre than water
Decides which ASHRAE W-class you are in
°C
Advanced / Custom Input — fluid properties
Filled in from the coolant. Water is 4.186.
kJ/kg·K
kg/L
Where does the heat finally go?
This is where the site’s climate starts to matter
Filled in from your country
°C
What a cooling tower can actually reach towards
°C
Advanced / Custom Input — the plant
How close to wet bulb the tower gets.
K
How close to dry bulb the dry cooler gets.
K
Loss across the plate heat exchanger between facility and technology loops.
K
Result
Put in your rack density and count, then press “Size the cooling”.
Estimate only — verify with a qualified mechanical engineer and the site’s own ASHRAE design conditions before relying on this for a design or an investment decision.