Air Handling

Definition

Air handling refers to the process of using single- or variable-speed fans to push air over hot or cold coils, through dampers, and ducts to heat or cool a building or structure. This process is essential in maintaining indoor air quality and comfort by regulating temperature and humidity levels.

Purpose

The primary purpose of air handling is to control the indoor climate by distributing heated or cooled air throughout a building. This helps maintain a comfortable environment for occupants and ensures efficient operation of HVAC (Heating, Ventilation, and Air Conditioning) systems. Air handling also plays a crucial role in ventilation, ensuring a constant supply of fresh air and the removal of stale or contaminated air.

Examples of Use

1. Commercial Buildings: Air handling units (AHUs) are used in office buildings to distribute air conditioned by central HVAC systems, maintaining a comfortable indoor environment for employees.
2. Residential Homes: In homes, smaller air handling units or central air systems push air through ducts to provide heating and cooling to different rooms.
3. Hospitals: Air handling systems in hospitals are designed to maintain strict air quality standards, controlling temperature, humidity, and filtration to create sterile environments.
4. Industrial Facilities: Factories and manufacturing plants use air handling systems to regulate the indoor climate, ensuring safe working conditions and protecting sensitive equipment and processes.
5. Shopping Centers: Malls and retail spaces use air handling systems to provide a comfortable shopping environment, controlling temperature and air quality across large areas.

Related Terms

1. HVAC (Heating, Ventilation, and Air Conditioning): The system responsible for heating, cooling, and ventilating a building, of which air handling is a critical component.
2. Air Handling Unit (AHU): A device that conditions and circulates air as part of an HVAC system, typically containing fans, heating and cooling elements, filters, and dampers.
3. Ductwork: A system of ducts used to transport air from the AHU throughout a building.
4. Thermostat: A device that regulates the temperature by controlling the operation of the HVAC system, including air handling components.
5. Variable Air Volume (VAV): A type of HVAC system that adjusts the airflow rate to maintain the desired temperature, providing efficient and precise climate control.

Notes

• Air handling systems must be properly designed and maintained to ensure efficient operation and to avoid issues such as uneven heating/cooling and poor air quality.
• Filters within air handling units should be regularly checked and replaced to maintain air quality and system efficiency.
• The integration of smart controls and building management systems can enhance the performance of air handling systems by optimizing airflow and energy use.
• Properly balanced air handling systems ensure that conditioned air reaches all areas of a building uniformly, avoiding hot or cold spots.
• Air handling systems can also include humidifiers or dehumidifiers to manage indoor humidity levels, contributing to overall comfort and health.