Our solutions
Atlas Copco Rental
Solutions
Industries served
Compressors
Solutions
Products
Compressors
Industrial condensate treatment solutions range
Products
Industrial condensate treatment solutions range
Industrial condensate treatment solutions range
Industrial condensate treatment solutions range
Process gas and air equipment
Compressors
Industrial Tools & Solutions
Solutions
Industries Served
Industrial Tools & Solutions
Aerospace
Industries Served
Aerospace
Aerospace
Aerospace
Aerospace
Original equipment manufacturer
Industries Served
Industries Served
Products
Industrial Tools & Solutions
Air line accessories
Products
Air line accessories
Air line accessories
Air line accessories
Drilling solutions
Material removal tools
Products
Material removal tools
Material removal tools
Material removal tools
Material removal tools
Material removal tools
Material removal tools
Material removal tools
Material removal tools
Material removal tools
Service
Industrial Tools & Solutions
Atlas Copco service solutions
Service
Atlas Copco service solutions
Atlas Copco service solutions
Atlas Copco service solutions
Industrial Tools & Solutions

Importance of Drying The Air

In the following article we discuss why an air dryer is important

Get in touch

Why Do You Need An Air Dryer?

10 March 2020

Since the atmospheric air contains different amounts of moisture depending on the temperature - higher air temperatures can absorb more water, while air cannot absorb as much water at lower temperatures. This also applies to compressed air systems, and if our body is an indication of how excess water and moisture can affect performance, imagine how this affects a compressed air system.

air-dryer

Air dryers improve the quality of compressed air

Pipe damage due to excessive water

Pipe damage due to excessive water

Untreated compressed air that contains solid liquid and gaseous contaminants poses a significant risk as it can damage your air system and your end product. Moisture, one of the main components of untreated air, can cause the following problems:

  1. Causing rust and wear of the inner part of the compressed air line, which leads to holes and thus to air leaks, which leads to a drop in pressure and thus to energy and money loss!
  2. May adversely affect the colour, adhesion and surface finish of the paint applied with compressed air.
  3. Can endanger the process industry, where many operations depend on the proper functioning of the pneumatic controls. Malfunction of these controls due to rust, scale, and clogged openings can damage the product or result in costly shutdowns.
  4. Can freeze in control lines in cold weather, which can cause the controls to malfunction.
  5. Causes corrosion on air or gas powered instruments, gives incorrect measured values, interrupts or switches off plant processes.
  6. Finally, contact of air with your end product can lead to rejection of your product and affect your profitability.

To avoid malfunctions and interruptions due to water and moisture in the pipes, the compressed air must therefore be dried wirh aftercoolers and drying devices

Choosing the Right Compressed Air Dryer

Before you look at the different types of dryers available, consider what to know when deciding which dryer is best for your specific needs:

  1. Know the specific uses of compressed air, the required air quality and the maximum permissable water content according to ISO 8573-1:2010 edition.
  2. You know the maximum ambient temperature at which the air dryer is operated. However, Atlas Copco has all types of air drying technologies to achieve any required air quality at any working environment temperature.
  3. You need to know the minimum working inlet pressure to the air dryer if the pressure decreases with increasing volume and the performance if the air dryer is impaired.
  4. Know the lowest temperature that the compressed air line passes through.
  5. If you have multiple compressors, it is always better to use a separate dryer for each compressor (number of dryers according to number of compressors).
Atlas Copco compressor with integrated dryer

Atlas Copco compressor with integrated dryer

As a rule of thumb, a refrigerant dryer is suitable for most industrial applications because it lowers the pressure dew point (commonly referred to as PDP, i.e. the point at which condensation forms) of your compressed air to +3°C. That means you don't have to worry about condensation unless your piping is exposed to freezing temperatures.

With an adsorption dryer you can reach a dew point of up to -70°C

With an adsorption dryer you can reach a dew point of up to -70°C

However, some applications require air with a much lower dew point. In this case, you need to take a look at the dry air drying technology, with which you can reach a dew point of up to -70°C. We recommend that you refer to the ISO 8573-1:2010 standard when specifying new air compressor systems and when reviewing your air system, but if you need ideas, our air experts will be happy to answer your questions at any time.

Discover the full range of Atlas Copco compressed air dryers and their applications.

Would you like to know how an air dryer works or what methods of air drying air there? Download our compressed air dryer white paper to learn more.

What Dryer Do I Need For My Compressor?