Cyclone Dust Collection & Duct Sizer

Calculate ACGIH machine capture CFM, duct friction loss, total static pressure (in. WG), and required cyclone motor horsepower.

1. Machine & Branch Duct Setup

Standard ACGIH industrial airflow required for true fine-dust capture.
Maintains air velocity above 3,800–4,000 FPM to avoid pipe clogs.

2. Ductwork Run & Resistance

Total distance from cyclone inlet along main trunk to the machine port.
Counts turns in the line (a 45° bend counts as half a 90° elbow).
Ribbed flex hose creates 3× to 4× the friction resistance of smooth steel.

3. Engineered System Performance

Recommended Cyclone Impeller Power:
3.0 HP High-Pressure Cyclone
13" to 14" curved backward-inclined impeller required.
Total System Resistance (Static Pressure Loss):
8.4 in. WG
Duct: 1.4" | Fittings: 1.8" | Flex: 2.0" | Cyclone: 3.2"
Calculated Operating Airflow at Machine Port:
785 CFM
Meets ACGIH standard for airborne PM2.5 capture.
Duct Air Transport Velocity:
4,000 FPM
Target: 3,800–4,200 FPM (Ideal wood shop chip suspension).

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Workshop Safety & Engineering Disclaimer: Calculations provided by this software are mathematical estimations based on industrial ACGIH ventilation guidelines and Darcy-Weisbach duct friction models. Real-world collector fan performance curves, impeller blade profiles, duct interior roughness, hood design shape, and elevation vary by manufacturer. Always confirm the fan curve chart (CFM vs. SP in. WG) provided by your collector manufacturer before ordering, and ensure proper grounding of ductwork networks to avoid static electrical discharge.