How large should the ventilation grille be?
Distinguish free flow area from the grille's overall dimensions.
Your inputs
Example data – these are not your operating figures. Adjust them before calculating.
Result
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How we calculate
Method: Free area A = Q/v. Total face area = A / free-area fraction. The example square has a side equal to the square root of the total area.
Assumptions and limitations: This does not select a product. A grille pressure characteristic, rain protection and noise check are required. The result is for one flow opening, not the sum of intake and exhaust.
Method references- KAESER: Compressed Air System Installation Guide – ventilation and separation of cooling exhaust air.
Method version 1.0. Standard references verified in the ISO catalogue; the physical balances are not calculations prescribed by ISO. Before final design, we will verify actual operating and catalogue data.