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Centrifugal Fan
Centrifugal Fan
Belt-Driven Centrifugal Cabinet Fan AW Series
Systemair’s range of centrifugal fans offer the engineers the flexibility to choose the most suitable sizes and configurations to suit any site condition. With over 2000 variations of diameter, width and impeller type, specifications are virtually tailor-made to individual needs. We offer both single and double inlet forms and in three classes of construction to suit almost any applications.
There is a choice of eight impeller types, providing optimum performance to meet any duty. Casings are made of mild steel, welded and many are of semi-universal construction allowing the discharge angle to be modified to suit customer’s requirements. Many additional features and ancillaries can be supplied on request, example; split casings, carbon steel and stainless steel impellers.
Centrifugal Fans – Types of Blades
There are many different types of Centrifugal Fans covering air volumes from 50 CFM to 60,000 CFM and from 0.1 inches water gauge to 60 inches water gauge. Each application requires a fan with different characteristics, whether it be the blade design, the width of the casing or even the method of drive. By way of a guide as to which is the best for certain projects, we list below information that might assist the potential user.
Paddle Blades
This type of fans is used for the conveying of dust, woods and paper refuse, cotton fly etc. Since the blade design prevents ‘Build up’ of waste materials, discharge velocities vary dependent upon what is being conveyed in the air- stream. Normally in the region of 1500-4000 feet per minute.
Multivane or Forward Curved Blades
Used for general ventilation purposes – not good for dust, etc. Limited pressure characteristics. Normal discharge velocities 1000-2500 feet per minute.
Backward Curved or Backward Inclined Blades:
Non-overloading power characteristic suitable for very light dust applications (e.g. clean side of dust collector) where a good efficiency is required. Used for high pressure ventilation systems or where the system resistance could fluctuate. Normal discharge velocities 1800-3000 feet per minute.
High Pressure Blowers:
As their name suggests, these fans are supplied where the requirement is for high velocities, e.g. Air curtains, refuse conveying, etc. Normal discharge velocities 3000-6000 feet per minute.
Special Note:
Since Forward Curved and Paddle Blade fans have overloading power characteristic it is important the selected static pressure is achieved. Any reduction in the requirement could easily overload the motor.
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Related Products
IV
IV – The Compact One.
Standard features
• For daily ventilation requirements and smoke extraction in case of fire F300 (300 °C/120 min.).
• Symmetrical impeller blades; 100% reversible with low noise emissions.
• IP55 motors, insulation class H (smoke extraction ver- sion); IP55 motors, insulation class F (CO ventilation), according to EN60034-5.
• 50/60 Hz version available.
• Tested maintenance switch optional.
• Housing from galvanised sheet steel.
• Tested according to EN 12101-3.
• CE certification by BSI.*Click the button if you wish to view/download the Technical Data.
AJ8-TR – Premium
AJ8-TR (Premium) The Stylish one.
Standard features
• For daily ventilation requirements and smoke extraction in case of fire F300 (300 °C/120 min.).
• Symmetrical impeller blades; 100% reversible with low noise emissions.
• IP55 motors, insulation class H (smoke extraction ver- sion); IP55 motors, insulation class F (CO ventilation), according to EN60034-5.
• 50/60 Hz version available.
• Tested maintenance switch optional.
• Housing from galvanised sheet steel.
• Tested according to EN 12101-3.
• CE certification by BSI.*Click the button if you wish to view/download the Technical Data.
AJR-TR
AJR-TR – The functional one.
Standard features
• For daily ventilation requirements and smoke extraction in case of fire F300 (300 °C/120 min.).
• Symmetrical impeller blades; 100% reversible with low noise emissions.
• IP55 motors, insulation class H (smoke extraction version); IP55 motors, insulation class F (CO ventilation), according to EN 60034-5.
• 50/60 Hz version available.
• Tested maintenance switch optional.
• Housing from galvanised sheet steel.
• Tested according to EN 12101-3.
• CE certification by BSI.*Click the button if you wish to view/download the Technical Data.
IV Smart
IV SMART – The space-saving miracle.
features
• Green Ventilation jet fan with energy efficient EC technology for daily demand ventilation, CO control and cold smoke extraction. Your benefit: in an energy-efficient way IV smart meets all necessary requirements you have to fulfil.
• Available in 50/60 Hz, 230 V EC motors IP 44, according to EN 60034-5. Your benefit: cost-efficient – no expensive supply lines required.
• Very high efficiency. Your benefit: maximum performance and low energy consumption.
• Flat, compact housing. Your benefit: low installation height.
• Low weight and pre-installed ceiling mountings made of galvanised steel. Your benefit: easy, fast and safe installation.
• 100% controllable via 0-10V signal.
• Integrated motor protection.
• Casing made of galvanised steel sheet.
• For medium temperatures up to 55°C in continuous operation.
• Terminal box mounted at the outside of the casing for easy wiring.*Click the button if you wish to view/download the Technical Data.
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