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Airflow Calculator for Electronics Cooling

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Step 1 — Choose what to calculate

Electronics Cooling Airflow Calculator

Enter heat load and allowable air temperature rise to calculate theoretical and recommended design airflow.
Total heat released into the cooling air, not the equipment input rating.
The expected outlet-air temperature minus inlet-air temperature.
Use airflow at the actual fan operating point, after system resistance.
Used with altitude to estimate actual air density.
Advanced assumptions
Higher altitude reduces air density and increases required volume flow.
Applied to theoretical airflow. Default: 1.5× for preliminary fan sizing.
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