Data Centre Cooling Load Calculator
Estimate sensible heat load and an idealized air volume flow from user-entered IT power, additional heat, air properties, and temperature rise.
A QUICK WALKTHROUGH
How to use this tool
- Enter IT power and any additional sensible heat.
- Enter air specific heat, density, and the allowed temperature rise.
- Review estimated heat load and idealized air volume flow with the model limits.
Method and scope
This is a sensible-heat estimate using Q = mass flow × specific heat × temperature rise, with volume flow = mass flow ÷ density. It excludes humidity, hotspots, airflow distribution, and equipment selection.
Sources
DOE FEMP data center design guide: https://www.energy.gov/sites/default/files/2024-07/best-practice-guide-data-center-design_0.pdf; ASHRAE Handbook, Data Centers and Telecommunications Facilities: https://handbook.ashrae.org/Handbooks/A23/SI/A23_Ch20/a23_ch20_si.aspx
Local processing
Inputs remain in this browser. Results are estimates from values you supply.
GOOD TO KNOW
Common questions
Does this recommend cooling equipment?
No. It estimates sensible heat and idealized air flow from your inputs only.
Does it include humidity or hotspots?
No. The calculation excludes latent heat, local hotspots, and airflow distribution.
Can I use this as a design approval?
No. It is a simplified estimate and does not select equipment or establish a facility design.