OMEGA AIR A-DRY Series, Инструкция по установке и эксплуатации

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4 Description of operation
Adsorption dryer is intended for removal of vapour from the inlet compressed air in order to
reach a desired dew point at the outlet.
During normal operation of the adsorption dryer the non-dried compressed air enters the
adsorption dryer through the inlet and passes through the appropriate inlet control valve
into a tower where the process of adsorption is in progress. In the tower the air passes the
molecular sieve which removes the water vapour content through the process of adsorption.
After leaving the tower the dried compressed air leaves the adsorption dryer through the
outlet.
If a process of regeneration is underway in the second tower then part of the dried air is lead
through a nozzle into the tower where the regeneration is in progress. There the air that has
been dried and heated through the process of adsorption expands after leaving the nozzle
and passes the molecular sieve. Through the process of desorption the water vapour content
gets released from the molecular sieve and is carried by the air through the appropriate
release control valve after which it is discharged from the system.
After a set time the adsorption in the first tower is stopped and the control valves are run
through a sequence that pressurises both towers and starts the adsorption in second tower
and regeneration in the first tower.
Time of regeneration is constant and does not change. The dried air used for regeneration is
released which means that while the regeneration is in progress the adsorption dryer
operates at a lower efficiency. In most operating conditions the adsorption process can run
for a longer time than the time that is needed to regenerate the tower. Consequently
although times of regeneration and adsorption can be equal, in most operating conditions it
is more economical that the adsorption time is longer since such operation can greatly
increase the efficiency of the adsorption dryer.
DRY adsorption dryers have a factory pre-set adsorption time adjusted to the operating
conditions specified by the costumer to ensure the optimal operation. *
If the compressed air station shuts down, a stand-by signal is received or the adsorption
dryer gets disconnected from the power supply both adsorption dryer inlet control valves
open while both release control valves are closed so the air can flow from inlet through the
towers to the outlet. After the start signal is received or power returns the adsorption dryer
continues where it has stopped.
* For more information contact your supplier.