Dundar CM 21.2H Hot Environment Radial Snail Fan (Single Phase) 120 Degree 2500 m³ 2700 RPM

Ürün Tipi	V	AC/DC	Hz	W	rpm	m3/h	Ağırlık
CM 21.2 H	220	AC	50	1000	2700	2500	12.5

 

 

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

Hot Environment Fan

Dündar Hot Environment fans are specially designed centrifugal fans capable of handling temperatures up to 120 degrees. They are used for ventilating and cooling existing environments.

Hot Environment Fan Applications

• High-temperature areas for hot air exhaust
• Applications where axial fans fall short in pressure and airflow
• Solid fuel boiler applications

Fan Housing and Impeller

• Equipped with a cooler impeller to prevent heat transfer from the centrifugal housing to the motor for handling higher temperature air
• Radial housing made from high-quality cold-drawn DKP steel
• Environmentally friendly and durable electrostatic epoxy powder coating for high resistance to corrosion
• Forward curved radial impeller dynamically balanced according to ISO 1940 standards
• High pressure and airflow values with nozzle application at the intake
• Solid and smooth housing structure with a special riveted joint
• Low noise level

Motor

• High-quality production without human intervention, using advanced CNC machinery
• Aluminum alloy motor housing with high heat conduction capacity
• Insulation class F for high working range from -40° to +70°,
• 230 V / 50 Hz single-phase fan motor
• 400 V / 50 Hz three-phase fan motor
• Certified components compliant with standards
• IP 54 protection class (optional IP 55 production capability)
• Inverter control capability for three-phase fans

Considerations in Fan Selection

When selecting a fan, four parameters must be considered:

• Required Airflow
• Pressure Drops
• Acceptable Noise Level
• Electrical Power Connection Type

The required airflow for the ventilated environment depends on its usage, the number of occupants, and activities. The following table provides air change factors for different environments.

Environment	Air Change Factor
Auditoriums	6-8
Paint Ovens	25-50
Vault Rooms	3-6
Cinemas and Theatres	5-8
Commercial Kitchens	15-30
Foundries	8-15
Gymnasiums	4-6
Laundries	10-20
Enclosed Pools	3-4
Restaurants	8-12
Conference Rooms	6-8
Waiting 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

For example, in an office with 5 people, a ceiling height of 2.6 meters, and a floor area of 50 m², the volume is 130 m³. With a change factor of 5, the required airflow would be:

• 130 * 5 = 650 m³/h airflow
• With normal activity (non-smoking), this increases further. For 5 people * 29 m³ = 145 m³, the total airflow needed is 650 + 145 = 795 m³/h.

Fan selection is based on this airflow requirement. Once the airflow is calculated, the fan's installation location must be determined (e.g., ceiling, wall, chimney, ventilation duct). The electrical power type (monophase or trifase) also needs to be considered.