Yes, an Air Handling Unit (AHU) is a type of mechanical ventilation system. Its core function is to provide and control the exchange of air within a building.
Here’s why an AHU qualifies as mechanical ventilation:
- Mechanically operated: Unlike natural ventilation relying on wind and pressure differences, AHUs use fans or blowers to actively draw in fresh air from outside and expel stale air from the building.
- Air quality control: AHUs often incorporate filters to remove dust, pollen, and other contaminants, improving indoor air quality.
- Conditioning capabilities: Many AHUs can also heat, cool, and sometimes even control the humidity of the incoming air, ensuring a comfortable and healthy environment.
While AHUs can handle additional functions like heating and cooling, their primary role in an HVAC system remains providing and managing ventilation. This aligns them squarely with the definition of mechanical ventilation.
Mechanical Ventilation
The AHU draws in outside air, conditions it to meet the desired temperature and humidity levels, filters it to remove contaminants, and then distributes it to various zones within the building through a network of ductwork. In addition to supplying fresh air, the AHU also exhausts stale air from the building to maintain indoor air quality.
Overall, the AHU plays a crucial role in providing mechanical ventilation by ensuring a continuous supply of fresh air while simultaneously removing indoor pollutants.
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