How to Size Ducts Using Velocity
該当する場合
Use this guide for first-pass duct sizing when you want a fast area estimate before moving into detailed pressure-loss and noise calculations.
使うツール
Cross-section from airflow and target velocity — round diameter or rectangular second side.
Duct Size & Velocity Calculator を開く →手順
- 1Set airflow and a target velocity appropriate for the duct type and project stage.
- 2Compute required cross-sectional area from continuity.
- 3Convert that area into a round diameter or one missing rectangular side.
- 4Review whether the result is still realistic for installation and acoustic expectations.
- 5Move to detailed loss and balancing methods when the layout becomes fixed.
例
- Comparing two candidate velocity limits for a main supply branch.
- Checking whether an available duct width forces an unreasonable height.
避けること
- Treating a velocity-only result as a final duct design.
- Ignoring acoustic and spatial constraints after the first sizing pass.
- Mixing airflow units without converting them consistently.
関連ツール
ブログで
ジェネレーター・計算機 のその他
- How to Calculate Pressure Drop in Pipes
- What Reynolds Number Means in Pipe Flow
- How Pump Affinity Laws Change Flow, Head, and Power
- How to Calculate Voltage Drop for Cable Runs
- Single-Phase vs Three-Phase Power Basics
- How to Estimate Dew Point
すべてのタスクガイド または次の ジェネレーター・計算機 ハブ.
よくある質問
Does this include pressure drop?
No. It only converts airflow and target velocity into area and size.
Can I use the same velocity target everywhere?
Not usually. Main trunks, branches, and terminals often have different practical velocity ranges.