Why do compressed air and gas need drying?

Here  you will be seeing two main reason of why do compressed air and gas required to be dried.    

In industry it is always requirement of air dryer to dry the compressed air and gas, so it is vital for a person to know why it is needed and the reason behind it.

Two main reasons are:

• Presence of Moisture
• Damage due to moisture

 Presence of Moisture

All environmental air contains some water vapour which will start to gather into fluid water in the compacted air or gas framework when the air or gas cools past the saturation point, i.e., the exact point where it cannot hold more water vapour. We call that temperature as dew point at which this happens.

This dew point turns into exceptionally critical in deciding what amount drying is required.Buildup in the packed air framework would happen at the bay air immersion temperature if temperature stayed steady as air was packed.

Notwithstanding, since there is an ascent in temperature amid genuine pressure, build up by and large is maintained a strategic distance from inside the compressor.

Later, as packed air is released and cooled in an after cooler, build-up starts to happen. The dense dampness must be expelled by a separator and trap. The air leaving the after cooler ordinarily is soaked at the after cooler release temperature.

For a long time, issues from dampness in aircrafts were endured. To counteract solidifying, alcohols were infused into the lines and electric warmers were utilized amid frosty periods. Channels were utilized to isolate dampness and different contaminants however did not totally take care of the issue.

The expanded utilization of compacted air and the advancement of numerous new and more complex gadgets and controls have quickened the requirement for clean dry air. Thus, drying innovation progressed, and dryers came into general utilize.

Air Dryer-Industrial (source: annair)

Damage due to moisture 

Moisture in compressed air used in a manufacturing plant causes problems in the operation of pneumatic air systems, solenoid valves and air motors.

This is causes rust and increased wear of moving parts as it washes away lubrication.  Moisture adversely affects the color, adherence, and finish of paint applied by compressed air.

Moisture jeopardizes process industries where any operations are dependent upon the proper functioning of pneumatic controls. The malfunctioning of these controls due to rust, scale, and clogged orifices can result in damage to product or

in costly shutdowns. Additionally, the freezing of moisture in control lines in cold weather commonly causes faulty operation of controls. Corrosion of air or gas operated instruments from moisture can give false readings, interrupting or shutting down plant processes.

Defending and saving against the moisture is one of the important reason of using air dryer .

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