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
All environmental air contains some water vapor 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 vapor. 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 aircraft's 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.
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| Image Source: Annair Drychill Tech India Pvt Ltd. |
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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