
Water
vapor is contained in high-pressure air. In vapor form, the water does
little damage in most components. But if the water is allowed to
condense in the system, it can rust pipes, freeze up actuators, and
damage a process, tool, or instrument. To remove the particles of water
vapor air dryers are used.
An air dryer not only must dry
compressed air to the required dew point, but also must be able to
handle the required air flow without causing excessive pressure drop.
Flow capacity of a dryer depends on:
- Operating pressure
- Inlet air temperature
- Ambient air or cooling water temperature, and
- Required dew point
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Applications of Air Dryers
- Air Circuit Breakers
- High Pressure Generator Starting
- High Pressure Air for Aircraft Engine Starting
- Scuba diving and Breathing air applications
- High Pressure Gas Filling
- High Pressure H2 for Turbine Cooling
- Pressure Testing
- Pressure Process Gas Applications