Air Handling Units (AHUs) is an essential component of HVAC systems used in commercial and industrial buildings. AHUs are responsible for controlling and maintaining indoor air quality by regulating temperature, humidity, and ventilation. In this blog, we will explore the different parts and functions of AHU rooms.
What is an AHU Room?
An AHU room is a designated space within a building where the air handling unit is located. The AHU room houses the various components of the unit, including the blower, filter, and ductwork. It is important to properly design and maintain the AHU room to ensure that the AHU operates efficiently and effectively.
Parts of an AHU Room
Blower
The blower is the primary component of the AHU room. It is responsible for moving air through the system and distributing it to the building. The blower consists of a motor and a fan that work together to create the necessary airflow.
Filter
The filter is another essential component of the AHU room. It is responsible for removing impurities and contaminants from the air before it is distributed throughout the building. There are several types of filters, including pleated filters, HEPA filters, and activated carbon filters. The type of filter used depends on the specific needs of the building and its occupants.
Coil
The coil is responsible for either heating or cooling the air that passes through the AHU. There are two types of coils, the evaporator coil and the condenser coil. The evaporator coil cools the air, while the condenser coil heats the air. The type of coil used depends on the heating and cooling needs of the building.
Humidifier/Dehumidifier
The humidifier or dehumidifier is responsible for maintaining the proper level of humidity in the air. In areas with low humidity, a humidifier adds moisture to the air, while in areas with high humidity, a dehumidifier removes moisture from the air.
Ductwork
Ductwork is the system of pipes that distribute the air throughout the building. The ductwork can be made of various materials, including galvanised steel, aluminium, or fibreglass. The size and design of the ductwork depends on the airflow requirements of the building.
Functions of an AHU Room
Temperature Control
One of the primary functions of an AHU room is temperature control. The AHU is responsible for either heating or cooling the air that is distributed throughout the building. The temperature is controlled by the coil, which either heats or cools the air depending on the needs of the building.
Air Filtration
Another important function of the AHU room is air filtration. The filter is responsible for removing impurities and contaminants from the air, including dust, pollen, and bacteria. The type of filter used depends on the specific needs of the building and its occupants.
Humidity Control
Maintaining the proper level of humidity in the air is also an important function of the AHU room. The humidifier or dehumidifier is responsible for adding or removing moisture from the air to maintain the desired level of humidity.
Ventilation
The AHU room is also responsible for providing proper ventilation to the building. The ductwork distributes fresh air to the building, while the exhaust system removes stale air.
Conclusion
In conclusion, the AHU room is an essential component of HVAC systems used in commercial and industrial buildings. It is responsible for regulating temperature, humidity, and ventilation and ensuring that indoor air quality is maintained at all times. Proper design and maintenance of the AHU room are crucial to ensure that the AHU operates efficiently and effectively.
