Dündar D 25 Axial Chimney and Wall Extractor Fan, 800 m³, 1375 RPM

Name: Dündar D 25 Axial Chimney and Wall Extractor Fan, 800 m³, 1375 RPM
Brand: Dündar
SKU: 102254120
Price: 61.89 USD
Availability: InStock

$61.89 ~~$85.95~~ · In stock

Brand: Dündar · SKU: 102254120 · Warranty: 24 months

Dündar D 25 Axial Chimney and Wall Extractor Fan, 800 m³, 1375 RPM

Other options

Dündar D 16 Axial Chimney and Wall Exhaust Fan, 350 m³, 1440 RPM (out of stock)
Dündar D 20 Axial Chimney and Wall Extractor Fan, 600 m³, 1,425 RPM – $59.48
Dündar D 30 Axial Chimney and Wall Extractor Fan, 1,050 m³, 1,360 RPM – $65.97
Dündar D 35 Axial Chimney and Wall Exhaust Fan, 1,250 m³, 1,285 rpm – $67.69

Product description

Dündar D 25 Specifications

Product Type	V	AC/DC	~	Hz	W	Sound	rpm	m³/h
D 25	230	AC	1	50	55	48	1375	800

What Is an Axial Fan?

An axial fan is a type of fan that causes air to flow in an axial direction, parallel to the shaft on which the blades rotate. The flow is axial at both inlet and outlet. The blades rotating around an axis draw air parallel to that axis and push it outward in the same direction. The fan is designed to generate force by creating a pressure difference, causing flow through the fan. Axial fans produce airflow with a high flow rate, generating large volumes of airflow. However, the airflow they produce is at low pressure.

Where Are Dündar D Series Axial Fans Used?

Can be easily mounted in a ventilation opening cut in your chimney or wall.

Axial fans are widely used for ventilation in residential and commercial spaces. These fans offer a practical and economical solution for the ventilation needs of small areas and operate with low noise.
Due to the low-pressure, high-volume airflow they generate, axial fans are used for general-purpose applications — for example, moving or cooling air coming from one location.
Used for ventilating enclosed spaces.
Hot air extraction in areas with high air temperatures, removal of odors and smoke from homes,
Stale air extraction in offices
Environments with dust, cigarette smoke, and vapor,
Cooling of industrial machinery
(Welding machines, transformers, compressors…)

Things to Consider When Selecting an Axial Fan

4 parameters should be considered when selecting a fan:

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

The air changes required for the space to be ventilated depend on the intended use of the space, the number of occupants and objects inside, and their activities. The table alongside provides the required air change rate coefficients for different environments.

Environment	Air Change Rate
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	4-6
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 work areas)	60 m³/h

The amount of air per person in living and working spaces depending on activity level can help determine the required air flow rate.

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

Q [ m³/h ] = Air change rate coefficient (1 hour) × Space volume (m³)

Q [ m³/h ] = Number of people × Air flow rate required per person

After determining the required air flow rate for the space, an appropriate duct design (taking noise and air velocity criteria into account) should be made and pressure losses calculated. The fan type (axial, radial, roof, smoke extraction, etc.) should be decided based on the operating environment, and the appropriate fan should be selected from the relevant fan curve according to the determined flow rate–static pressure pair. To briefly illustrate the above with an example: 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 rate coefficient given for an office in the table is 4–8; let's take 5. 130 × 5 = 650 m³/h air requirement. If we assume normal activity in the office, 5 people × 29 m³ = 145 m³ for employees, giving a total of 650 + 145 = 795 m³/h air requirement.

Fan selection is also made based on this flow rate requirement.

After completing the flow rate calculations, the installation location of the fan should be determined. Where will the fan be mounted — ceiling, wall, chimney, or ventilation duct? Another consideration is the voltage of the electrical supply to the fan. Continuing with our office example: fans in offices are generally mounted on a wall or glass. If a domestic electricity supply is used, a single-phase fan should be preferred. If it is to be used in an industrial setting, a fan operating on three-phase (380 V) power should be used.

Dündar D Series Axial Fan Housing and Blade Components

Housing made from cold-drawn, high-quality DKP sheet steel and aluminum fan blades,
High corrosion resistance through environmentally friendly electrostatic epoxy powder coating,
Fan blades dynamically balanced in accordance with ISO 1940 standards,
Low Noise Level

Dündar D Series Axial Fan Motor

Quality production without manual handling on high-technology CNC machines,
Aluminum-finned motor casing with high thermal conductivity,
Insulation Class F for a wide operating range of −40° to +70° for the windings,** 230 V / 50 Hz single-phase fan motor,***
Standards-compliant certified components,
IP 44 protection class,

Technical Specifications & Dimensions

Specifications

Brand	Dündar