How Air Handling Units work

The video tutorial provides an in-depth look at air handling units (AHUs), commonly found in medium to large commercial and industrial buildings. It covers their purpose, which is to condition and distribute air by cleaning, heating, cooling, humidifying, or dehumidifying it. The tutorial explains the components of AHUs, such as dampers, filters, and coils, and their roles in air regulation. It also discusses temperature and humidity control, energy recovery techniques, and the importance of maintaining efficient systems for better air quality and energy savings.

Where are air handling units typically located in a building?

• In the kitchen

• In the basement, on the roof, or on the floors

• In the parking lot

• In the garden

What is the primary function of dampers in an AHU?

• To heat the air

• To control the flow of air

• To clean the air

• To cool the air

Why are filters important in an AHU?

• They catch dirt and dust to prevent them from entering the building

• They reduce noise

• They add fragrance to the air

• They increase the air pressure

What role do heating and cooling coils play in an AHU?

• They regulate the air temperature

• They reduce air pressure

• They filter the air

• They increase air humidity

How do fans contribute to the functioning of an AHU?

• They add moisture to the air

• They circulate air through the system

• They remove CO2 from the air

• They provide lighting

What is the purpose of a preheater in an AHU?

• To cool the air

• To humidify the air

• To prevent components from freezing

• To filter the air

How is humidity controlled in an AHU?

• By using a humidifier

• By using a dehumidifier

• By using a filter

• By using a fan

What is a run-around coil used for in an AHU?

• To filter the air

• To recover thermal energy

• To increase air pressure

• To add moisture to the air

What is a heat wheel used for in an AHU?

• To cool the air

• To recover heat from the exhaust stream

• To filter the air

• To increase air pressure

How does an air plate heat exchanger work?

• By adding moisture to the air

• By increasing air pressure

• By separating the air streams with metal sheets

• By mixing the two air streams