Dundar CM 16.2 Radial Snail Fan Aspirator (Single Phase) 1500 m³ 2700 RPM

What is a Radial Fan?

Fans that create pressure differences are called radial fans. The airflow generated operates along centrifugal force. A centrifugal fan is a mechanical device used to move air or other gases. It consists of a rotating impeller and a housing. Air or gas enters axially through the center, gets pressurized, and is discharged tangentially through the impeller channels to the outlet.

Due to the high pressure they generate, centrifugal fans are ideal for high-pressure applications like drying and air conditioning systems. Their enclosed moving parts and particle reduction capabilities make them suitable for air pollution control and filtration systems.

Applications of Radial Fans

Radial fans are used in scenarios where axial fans fall short in pressure and airflow, such as:

• Duct systems
• Solid fuel boilers
• High-temperature areas for hot air extraction
• General and industrial buildings
• Warehouses, depots, and storage facilities
• Garages and public buildings
• Agricultural buildings
• Commercial greenhouses
• Large workshops
• Paint booths
• Factories
• Environments with dust and vapor
• Cooling of industrial machinery (e.g., welding machines, transformers, compressors)

Radial Fan Body and Impellers

• Manufactured from high-quality cold-rolled DKP sheet
• High corrosion resistance with eco-friendly electrostatic epoxy powder coating
• Dynamically tested forward-curved galvanized radial impeller in compliance with ISO 1940 standards
• Produced per EN 60335-2-80 standards
• Suction nozzle for high-pressure and airflow values
• Protected air inlet to prevent foreign objects
• Robust and smooth body structure with special interlocking design
• Low noise levels
• Right and left mounting options

Radial Fan Motors

• High-tech, precision manufacturing using CNC machines
• Aluminum heat-conductive motor housing
• Rotor balanced per ISO 1940 standards for extended bearing life
• Class F insulation for wide operating range (-40° to +70°)
• Single-phase fan motor (230 V / 50 Hz)**
• Three-phase fan motor (400 V / 50 Hz)
• Certified components meeting standards
• IP 54 protection class (IP 55 optional upon request)
• Variable frequency drive control available for three-phase fans

Key Considerations for Fan Selection

When selecting a fan, consider the following parameters:

1. Required Airflow
2. Pressure Losses
3. Acceptable Noise Levels
4. Electrical Power Connection Type

To calculate the required airflow for the space:

1. Use the air change rate table for the specific environment.
2. Calculate the space volume: Q [m³/h] = Air change rate (1/hour) × Room volume (m³)
3. Alternatively, calculate based on occupant needs:
   Q [m³/h] = Number of people × Airflow required per person (m³/h)

Example:

For an office with:

• 5 people
• Ceiling height of 2.6 meters
• Floor area of 50 m²

Volume = 2.6 × 50 = 130 m³

Air change rate for offices = 4-8 (Assume 5)

Required airflow: 130 × 5 = 650 m³/h

For occupants: 5 × 29 m³ = 145 m³/h

Total required airflow: 650 + 145 = 795 m³/h

Additional Considerations

• Determine where the fan will be installed (ceiling, wall, chimney, or ventilation duct).
• Check the voltage supply for the fan (e.g., single-phase or three-phase).
• For offices, wall or window-mounted fans are common. Use single-phase fans for domestic electricity and three-phase fans for industrial applications.