Understanding the Key Components of an AHU (Air Handling Unit)

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An Air Handling Unit (AHU) is a crucial part of any HVAC system that is responsible for regulating the temperature, humidity, and air quality within a building. It&#;s essentially a large metal box that contains several key components that work together to maintain a comfortable and healthy indoor environment. In this article, we&#;ll take a closer look at the key components of an AHU and their functions.

Filters:

Filters are the first line of defense in an AHU. They are responsible for removing dust, dirt, and other particulate matter from the incoming air. This is important because it not only helps to maintain air quality, but it also prevents debris from clogging up the other components within the AHU.

Heating/Cooling Coils:

Heating and cooling coils are responsible for regulating the temperature of the air passing through the AHU. These coils can be heated by a variety of sources, including electric, hot water, and steam, and they can also be cooled by chilled water or refrigerant. By controlling the temperature of the air passing through the AHU, the heating and cooling coils help to maintain a comfortable indoor environment.

Humidifier/Dehumidifier:

Humidity is another important factor to consider when it comes to indoor air quality. If the air is too dry, it can lead to discomfort, dry skin, and respiratory issues. If the air is too humid, it can lead to the growth of mold and bacteria. Humidifiers and dehumidifiers work to regulate the humidity levels within the AHU by adding or removing moisture from the air as needed.

Fans:

Fans are responsible for moving the air through the AHU and into the ductwork that distributes it throughout the building. Without fans, the AHU would not be able to perform its function effectively.

Dampers:

Dampers are used to regulate the flow of air within the AHU. By adjusting the position of the dampers, it&#;s possible to control the amount of air that is allowed to pass through each section of the AHU. This is important because it helps to ensure that the air is distributed evenly throughout the building.

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Controls:

Controls are the brain of the AHU. They are responsible for monitoring the temperature, humidity, and air quality within the building and adjusting the various AHU components as needed to maintain a comfortable and healthy indoor environment. The controls can be programmed to operate automatically based on pre-set parameters, or they can be manually adjusted as needed.

In conclusion, understanding the key components of an AHU is essential to maintaining a comfortable and healthy indoor environment. By ensuring that each component is functioning properly and working together effectively, building owners and managers can provide a safe and pleasant environment for their occupants. If you&#;re in the market for an AHU, be sure to work with a reputable supplier who can help you select the right components for your specific needs.

Main Components of Air Handling Units and How to Maintain Them

The heating, ventilation, and air conditioning (HVAC) system is necessary for every building as it regulates the temperature and quality of the indoor air. Without the right components, the involved property might use too much energy without providing comfort to the occupants inside.

One of the components of the HVAC system that must be present on your property is an air handling unit. An air handling unit, or AHU, is a piece of equipment that regulate air quality, humidity, and temperature before circulating the same air in the HVAC system. It depends heavily on ductwork to then push the air throughout a property.

Many components can be found inside an air handling unit. And to ensure that they remain functional for a long time, they should be maintained optimally.

Air Handling Unit Main Components

An air handling unit can work optimally if the following components remain functional.

&#; Blowers: Blowers or the fans serve as the main core of an AHU system. These components generate enough pressure for the air to be moved and transported throughout a system of AHUs. If these components fail, it is often due to a bad relay, run capacitor, blower wheel, or the blower motor itself.

&#; Heating or Cooling Coil: The heating or cooling coil of the AHU system function alternatively depending on the thermostat setting. The air will be transported to one of these coils before it enters the ductwork.

&#; Dampers: Dampers are crucial AHU system components that can control the amount of air that goes through them. They can be either manual or modulated.

&#; Humidifiers: Humidifiers are used to prevent discomfort due to drier air, which can be beneficial for properties in the colder months. They work by increasing the humidity of the air while it moves through the HVAC system.

&#; Filter Racks: Filter racks are dedicated to storing filters that can remove particles from the air. Their size, type, and number depend heavily on the unit they are integrated with. The filters on these racks must be changed semi-annually, quarterly, or more frequently depending on the air quality of a building.

&#; Heat Exchanger: Heat exchangers are often fitted to an AHU to improve energy efficiency. They ensure that the exiting conditioned air can make the incoming outside air colder or warmer. The fresh air from the system is often preheated by recovering and obtaining residual heat in the exhausted gas.

General Upkeep of the AHU System

There are a lot of activities that can be done to clean and maintain your AHU system.

For one, frequent examination of electrical components, control panel and boxes, control set points, return air dampers, relief air dampers, filter section, heating coil, drain line and pan, cooling coil, and other parts can be done to check their overall condition. Some of these components may require regular cleaning to ensure that they can perform well for a long time. Others, alternatively, should be replaced if they are already faulty. Some components may likewise require frequent lubrication to prevent them from getting damaged.

To confirm that your AHU system is still intact, you must check if it does not produce any unwanted level of noise or vibration. Their filters and condensation pan must also be clean so they can work well. Lubrication is likewise necessary for the motor and blower bearing.

If you need help with AHU system maintenance, you can contact us at Fluid Sealing.

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