Aircol 20 K Covered Axial Fan / Aspirator 360 m³/h

What is an Axial Fan?

An axial fan is a type of fan that moves air in an axial direction, parallel to the shaft on which the blades rotate. The airflow at both the inlet and outlet remains axial. The rotating blades pull air in parallel to the axis and push it out in the same direction. Axial fans create a pressure difference, generating a flow through the fan. They produce a high flow rate, meaning they can move large volumes of air, but the airflow is at low pressure.

APPLICATION AREAS

For small and medium-sized spaces:

• Suitable for ventilation in bathrooms, toilets, kitchens, pantries, laundry rooms, garages, and workplaces.
• Specifically designed for direct window mounting.

For large and medium-sized spaces:

• Ideal for ventilating kitchens, bathrooms, offices, pantries, and garages.
• Designed to expel dirty and stale air directly without using a connection duct.

FEATURES

• The stylish rear grille provides maximum protection against dust, bad odors, moisture, cold air, and other external factors when the fan is not in use.
• The fan stops automatically when the pull-cord rear cover is closed and starts operating when opened.
• The dust-exposed front cover, body, and blades can be wiped clean easily.
• Optimized motor and housing design minimize noise levels.
• Self-lubricating motor bearings ensure quiet and long-lasting performance.
• Can be easily mounted on windows.
• Provides IPX4 protection against water splashes.

USAGE OPTIONS

• The pull-cord cover allows for manual on/off operation.
• An electronic timer circuit can be added to keep the fan running for a preset duration after it is turned off.
• The motor is thermally protected against wear and tear in hot environments.

Example Model: Aircol 20 K Axial Fan / Extractor Fan

FACTORS TO CONSIDER WHEN SELECTING AN AXIAL FAN

When choosing a fan, four key parameters must be taken into account:

1. Required Airflow (Volume Flow Rate)
2. Pressure Losses
3. Acceptable Noise Level
4. Electrical Power Connection Type

The required ventilation rate for a space depends on its purpose, the number of occupants, and their activities. The table below provides air change rates for different environments:

AIRFLOW CALCULATION

The required airflow can be determined using the following formulas:

$$Q (m³/h) = \text{Air Change Rate} \times \text{Room Volume} (m³)$$

or

$$Q (m³/h) = \text{Number of People} \times \text{Required Airflow per Person}$$

For example, if an office has 5 employees, a ceiling height of 2.6 meters, and a floor area of 50 m²:

• Room volume = $2.6 \times 50 = 130 m³$
• Air change rate for an office = 5
• Required airflow = $130 \times 5 = 650 m³/h$

If normal activity is assumed, the air requirement per person is 29 m³/h:

• Total personnel air requirement = $5 \times 29 = 145 m³/h$
• Total airflow required = 650 + 145 = 795 m³/h

FAN INSTALLATION CONSIDERATIONS

After calculating the airflow, determine the installation location:

• Will the fan be mounted on the ceiling, wall, chimney, or ventilation duct?
• What is the power supply voltage?

For an office setting:

• Fans are typically wall or window-mounted.
• If using household electricity, a single-phase (230V) fan should be chosen.
• In industrial settings, a three-phase (380V) fan is recommended.