Dündar CM 21.2 Radial Centrifugal Fan (Single-Phase), 2,500 m³/h, 2,700 rpm

Name: Dündar CM 21.2 Radial Centrifugal Fan (Single-Phase), 2,500 m³/h, 2,700 rpm
Brand: Dündar
SKU: 104212100
Price: 179.18 USD
Availability: InStock

$179.18 ~~$248.86~~ · In stock

Brand: Dündar · SKU: 104212100 · Warranty: 24 months

Dündar CM 21.2 Radial Centrifugal Fan (Single-Phase), 2,500 m³/h, 2,700 rpm

Other options

Dündar CM 16.2 Radial Centrifugal Fan Extractor, Single-Phase, 1,500 m³, 2,700 RPM – $137.36
Dündar CT 16.2 Centrifugal Fan, Three-Phase, 1,500 m³, 2,700 rpm – $136.46
Dündar CM 16.4 Radial Centrifugal Fan (Single-Phase), 750 m³/h, 1,460 rpm – $128.42
Dündar CT 16.4 Radial Centrifugal Fan (Three-Phase), 750 m³, 1,470 rpm – $127.52
Dündar CM 18.2 Radial Centrifugal Fan (Single-Phase), 1,625 m³/h, 2,650 rpm – $163.33
Dündar CT 18.2 Radial Centrifugal Fan / Aspirator, Three-Phase, 1700 m³, 2770 RPM – $163.33
Dündar CM 18.4 Centrifugal Fan, Single-Phase, 1,000 m³, 1,430 rpm – $153.35
Dündar CT 18.4 Radial Centrifugal Fan (Three-Phase), 1,100 m³/h, 1,445 rpm – $153.35
Dündar CT 21.2 Radial Centrifugal Exhaust Fan, Three-Phase, 2,500 m³, 2,700 RPM – $186.83
Dündar CM 21.4 Radial Centrifugal Fan (Single-Phase), 1,575 m³, 1,390 rpm – $166.03
Dündar CT 21.4 Radial Centrifugal Fan Extractor, Three-Phase, 1,650 m³, 1,430 RPM – $167.83

Product description

Dündar CM 21.2 Radial Centrifugal Fan Features

Product Type	V	AC/DC	~	Weight	W	Sound	rpm	m³/h
CM 21.2	230	AC	1	13.7	1000	83	2700	2500

MODEL	C	D	E	H	L	O	P	S	T
CM 21.2	420	265	360	360	198	220	200	150	169

What Is a Radial Fan?

Fans that generate a pressure difference are called radial fans. The resulting air effect acts in the direction of centrifugal force. A centrifugal fan is a mechanical device used to move air or other gases. Like a pump, these fans have a rotating impeller and a spiral-shaped housing in which the impeller sits. Air or gas enters axially through the center, is pressurized and discharged tangentially from the impeller periphery into ducts, and is expelled through the outlet. Due to the high pressure they generate, centrifugal fans are ideal for high-pressure applications such as drying and air conditioning systems. Since all moving parts are enclosed, they also have particle-reducing properties that make them ideal for use in air pollution control and filtration systems.

Radial Fan Applications

Where the pressure and flow rates of axial fans are insufficient,
In duct applications,
In solid-fuel central heating boilers,
Hot air extraction in general and industrial buildings where ambient temperatures are high,
Warehouses, stockrooms, and storage facilities,
Garages and public buildings, agricultural buildings,
Commercial greenhouses,
Large workshops,
Paint shops,
Factories,
Environments containing dust and vapor,
For cooling industrial machinery (welding machines, transformers, compressors, etc.)

Radial Fan Casings and Impellers

Cold-drawn, high-quality DKP sheet steel radial casing,
High corrosion resistance with environmentally friendly electrostatic epoxy powder coating,
Galvanized forward-curved radial impeller dynamically balanced to ISO 1940 standard, manufactured in accordance with EN 60335-2-80
High pressure and flow rate values achieved through inlet nozzle design,
Air inlet protected by a guard against foreign object ingress
Sturdy and neat casing structure with special clinch-type casing assembly,
Low noise level,
Left and right orientation options for installation in any desired direction,

Radial Fan Motor

High-quality production without manual intervention on high-technology CNC machines,
Aluminum-finned motor housing with high thermal conductivity,
Rotor balanced to ISO 1940 standards for extended bearing service life,
Insulation class F with a wide operating range for windings from −40 °C to +70 °C,* 230 V / 50 Hz single-phase fan motor,
400 V / 50 Hz, three-phase fan motor
Standards-compliant certified components,
IP 54 Protection Class (IP 55 production available on request)
Three-phase fans can be used with variable frequency drive (VFD) control.

Things to Consider When Selecting a Fan;

Four parameters must be considered when selecting a fan:

Required Air Flow Rate
Pressure Losses
Acceptable Noise Level
Electrical Power Connection Type

The air changes required for a ventilated space depend on the intended use of the space and the number and activities of the people and objects within it. The table alongside shows the required air change coefficients for various environments.

Environment	Air Change Coefficient
Auditoriums	6-8
Paint Ovens	25-50
Vault Rooms	3-6
Cinemas and Theaters	5-8
Commercial Kitchens	15-30
Foundries	8-15
Gymnasiums	4-6
Laundries	10-20
Indoor Swimming Pools	3-4
Restaurants	8-12
Conference Rooms	6-8
Waiting Rooms	10-15
Copy Rooms	10-15
Machine Rooms	10-40
Shops	4-8
Dry Cleaning	5-15
General Manufacturing Areas	4-8
Hospitals	8-12
Laboratories	8-15
Normal Activity (non-smoking)	29 m³/h
Normal Activity (smoking)	58 m³/h
Light Activity	45 m³/h
Heavy Activity (industrial workspaces)	60 m³/h

Per-person air volumes in living and working spaces based on activity level can help determine the required airflow rate.

Based on the information provided above, the required air flow rate is determined as follows.

Q [m³/h] = Air change rate (1 hour) * Room volume (m³)
Q [m³/h] = Number of persons × Air flow rate required per person

Once the required air flow rate for the space has been determined, an appropriate duct design (considering noise and air velocity criteria) must be prepared and pressure losses must be calculated. Depending on the environment in which the fan will operate, the fan type (axial, centrifugal, roof, smoke exhaust, etc.) should be decided upon, and the appropriate fan should be selected from the fan curve based on the established flow rate–static pressure pair. To briefly illustrate the above with an example using the table: an office has 5 employees, a ceiling height of 2.6 meters, and a floor area of 50 m², giving a volume of 2.6 × 50 = 130 m³. The air change coefficient from the table for an office was 4–8; let's take an average of 5. This gives 130 × 5 = 650 m³/h of air requirement. Assuming normal activity in the office, 5 persons × 29 m³ = 145 m³ for the occupants, for a total air requirement of 650 + 145 = 795 m³/h.

Fan selection is made according to this flow rate requirement.

After performing the flow rate calculations, the location where the fan will be installed must be determined. Where will the fan be mounted — on the ceiling, wall, chimney, or ventilation duct, etc.? Another consideration is the voltage of the electricity supply to the fan. Since we used an office as our example, let us continue with that. Fans are generally wall- or glass-mounted in offices. If standard household electricity is to be used, a single-phase fan should be preferred. If the fan is to be used in an industrial setting, a fan operating on three-phase (380 V) electricity should be used.

Specifications

Brand	Dündar