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Centrifugal fans for higher system resistance
Centrifugal fans are frequently used in industrial extraction and filter systems because they can deliver defined air volumes even against higher pressure drops. Piping, elbows, filters, cyclones, and capture elements determine the actual operating point.
Typical Applications
✔ Centralized extraction systems
✔ Filtration and Dust Collection Systems
✔ Spot and machine extraction
✔ Process air and mechanical ventilation
✔ Pipe networks with higher pressure losses
Flow rate, Pressure, and Performance Curve
The selection should not be based on a single maximum value. The decisive factor is whether the fan can deliver the required flow rate at the actual system resistance. Speed and control also influence the performance curve.
Here’s what you should keep in mind
✔ Operating point based on flow rate and pressure
✔ Total system resistance
✔ Medium and particle load
✔ Temperature and Environment
✔ Connection orientation and direction of rotation
✔ Motor and Control Concept
FAQ
Why are centrifugal fans frequently used in extraction systems?
Because they can provide a usable airflow even at higher system resistances.
What is the operating point?
The point of intersection between the fan characteristic curve and the system characteristic curve.
Can it only be selected based on engine power?
No. Motor power alone does not describe either flow rate or available pressure.
Are dust-containing media always permissible?
No. The design must be suitable for the type of particles and the load.
Advice on Centrifugal Fans
The desired flow rate, pressure drop, piping system, filter, and medium will help guide your selection.
