The difference between an air washer and an air handling unit

Airwashers and air handling units are two types of equipment from the set of air conditioning devices that are used in industrial, domestic, and office places to create fresh air and air condition the environment. These types of equipment have similarities and differences in terms of appearance, use, and operation. In this article, the difference between an air washer and an air handling unit, as well as the advantages of using each, are discussed. Stay with us.

What are the differences between an air washer and an air handling unit?

First, we will review a brief explanation about the air washer and air handling unit devices together, then we will examine the differences in the way each one works and uses.

Airwasher: uses the method of spraying water powder on the air passing through the device to cool the ambient air. Airwasher can be used for cooling (evaporative) or heating, increasing humidity, as well as filtering and cleaning the air in the environment.

Air handling unit: It uses water cooled by the chiller to cool the air and water heated by the engine room boiler to heat the environment.
It should be mentioned that the DX-type air handling unit is also produced, in this model, cold water coil is not used, but the coil containing refrigerant from the air chiller is directly connected to the air conditioner.

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How air washer and air handling unit work

As it was said, air washers and air handling units have differences, in the following, we will get to know the difference between an air washer and an air handling unit with a description of how each one works.

How the air washer works

In the air washer, the air is sucked into the device by a fan and after passing through the dust filters, relatively clean air enters the geyser chamber. In the geyser, the diffuser distributes the air evenly. The pollution in the air and dust particles are washed away due to the impact of the water powder droplets that are sprayed by the nozzles. In this way, the air coming out of the device needs clean, cool, and humid air.

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Application of air washer

The differences between the air washer and the air handling unit are more closely related to the performance of the air washer. Airwashers have a limited operational capacity and are more suitable for installation in office and residential apartments, provided that the relative humidity of the air in the place is less than 40% in summer. Airwasher's performance in cooling (evaporative) and air conditioning provides the user with an ideal device for the desired location.

How the air handling unit works

As a complementary part of the air conditioning system, air handling units are usually placed outside the building (on the roof) and provide cooling and heating in three ways using cold water from the chiller or hot water from the boiler, which can be used in any building and it's possible to choose each one according to the type of users.

• Receiving fresh air from the outside, which is complete and one hundred percent, then the temperature is adjusted on the cold water coil and the hot water coil and it is directed inside the building, which is also called Full Fresh.
• Receiving air from inside the building, in which case no fresh air enters the air handling unit. Then the operation of purifying and adjusting the temperature of air and bringing it back inside (circulation of 100 percent of the air inside) is done.
• Getting some fresh air from outside and getting some air from inside the building, combining the two in the mixing chamber or
(Mixing Box) air handling unit, then the temperature adjustment is done in the hot water coil and cold water coil of the device, and the air is sent inside the building.

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Application of air handling unit

When the purpose of using air conditioning systems is to air large places such as hospitals, industrial halls, large hotel lobbies, and residential complexes with several hundred units and administrative organizations, using air conditioning equipment is cost-effective. It will be better because they can continue to work reliably and efficiently for a long time.

Final speech

On the site of Damatajhiz's specialized collection, technical information of dozens of models of air washers and air conditioners, from reputable brands with original warranties, has been presented for you to enjoy the good feeling of optimal and smart shopping. To receive advice regarding the selection of the capacity and type of air washer or air conditioner required for your project, you can contact the experts of the air conditioning equipment department of Damatajhiz Group during office hours.

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