Why is the catalogue size not enough to select a fan?
A fan delivers airflow that depends on the pressure it works against. It is correctly selected only if its curve crosses the system curve at the required airflow, with margin for filter loading.
Products we supply
Industrial Fans & Ventilation Systems
Axial, radial, jet and smoke-extraction fans selected from the duty point, with Ex-proof and acoustic options.
01Overview
Supply and engineering from one team
Powersense supplies axial and mixed-flow fans, duct and roof radial fans, acoustic fan boxes, high-pressure axial fans, smoke-extraction and jet fans, and Ex-proof models, and engineers the selection from airflow, pressure, noise and fire duty.
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02Scope and process
Engineering scope and deliverables
- 01
Airflow and ventilation rate
The required airflow is derived from occupancy, heat gain, process emission or the smoke-control scenario.
DeliverableAirflow schedule - 02
System pressure loss
Duct, filter, damper and outlet losses are calculated to establish the system curve.
DeliverablePressure-loss calculation - 03
Fan selection at the duty point
The fan curve is matched to the duty point with a margin for filter loading, using performance data tested to ISO 5801.
DeliverableFan selection sheet - 04
Fire duty and temperature class
Smoke-extraction fans are classified by temperature and exposure time under EN 12101-3, and jet fans are checked for thrust (ISO 13350).
DeliverableFire-duty specification - 05
Noise, vibration and explosive atmospheres
Acoustic fan boxes or attenuators are applied in occupied spaces, and Ex-proof models in classified areas (EN 14986).
DeliverableAcoustic and Ex specification - 06
Control, CFD and commissioning
Variable-speed control and fire-scenario logic are programmed, CFD is applied where needed and airflow is measured at commissioning.
DeliverableControl schedule, commissioning report
03Standards
International standards applied
These standards form the technical basis for design and equipment selection. The exact set is confirmed for each project against the national regulations in force.
- ISO 5801Fans: performance testing using standardised airways.
- ISO 12759Fans: efficiency classification.
- EN 12101-3Smoke and heat control systems: specification for powered smoke and heat exhaust ventilators.
- ISO 13350Fans: performance testing of jet fans.
- EN 14986Fans designed for use in potentially explosive atmospheres: design requirements.
- ISO 13347Industrial fans: determination of fan sound power levels.
04Products
Products we supply
- Axial and mixed-flow wall and duct fans
- Duct-type and roof radial fans
- Acoustic fan boxes
- High-pressure axial fans and extractors
- Axial smoke-extraction fans and jet fans
- Ex-proof axial fans
05Project types
Typical project types
- Car parks and garages
- Industrial ventilation
- Commercial kitchens and malls
- Hazardous (Ex) areas
- Plant and technical rooms
- Hotels and hospitals
06Technical notes
Technical notes and FAQ
How are smoke-extraction fans classified?
EN 12101-3 classifies powered smoke and heat exhaust ventilators by temperature class and exposure time. The class required is set by the fire-safety concept of the building.
07Keep exploring
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