Compress Air: About Compressed Air

Unlike liquids, air can be compressed, i.e., a given air volume can be reduced, increasing pressure in the new volume obtained. In the example of a bicycle pump, the air is drawn inside the pump and compressed to approximately 1/4 of its original volume. The air pressure inside the tire increases to reach up to four times the atmospheric pressure.

What Does Compressed Air Contain?

The compressor’s compressed air naturally contains the same elements as those in the ambient air sucked in. Water vapor in the air is also compressed. Therefore, compressed air is moist. It may also contain small amounts of oil (that of the compressor itself). Depending on the intended application, the compressed air quality sometimes needs to be improved through drying (reduction of humidity) and filtration (removal of oil and other particles).

What Happens When Air Is Compressed?


The power supplied by the compressor like in Fluid-Aire Dynamics for example is completely converted into heat during the compression process, regardless of the type of compressor used. This heat can be recovered to heat the premises to improve the overall budget of a compression system.

Water Vapour

After compression and some degree of cooling, the compressed air is saturated with water vapor and has a relative humidity of 100%. This vapor condenses into water. The temperature at which this phenomenon occurs is called the dew point. Condensation is then found in the air and water tanks and pipes.

Compressed Air As An Energy Source

Using the power of compressed air in Compressed Air Dryers and Inline Filters has many advantages. First, compressed air is clean and safe as a power source. Second, it can also be used for various tasks like operating tools and pistons to move or cool materials. An external power source is required to power the compressor.

Choose Your Compressed Air System

The Compressed Air Guide identifies two main types of compressors: reciprocating and screw compressors. A complete compressed air system, meeting modern demands in terms of budget, accessibility, and environmental friendliness, consists of the following units.

What Does A Compression System Include?


Positioned with a service space of at least 0.5 m all around the compressor. There must be at least 1 m of free space in front of the electrical panel.

Air Tank:

With fittings and an automatic drain valve – it must be inspected by an accredited body before use.

Refrigeration Dryer:

Condensation-free air for indoor use. Connected using a shut-off valve and a by-pass for easy maintenance.

Adsorption Dryer:

Condensation-free air for indoor use. Connected using a shut-off valve and a by-pass for easy maintenance.

Oil Separation Filter:

Removes oil residue from compressed air to provide technically oil-free compressed air.

Condensate Treatment System:

Protects the environment from oily condensate from the compressor, air receivers, dryer, and filter.

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