A compressed air dryer is a device for removing water vapor from compressed air. Compressed air dryers are commonly found in a wide range of industrial and commercial facilities.
The process of air compression concentrates atmospheric contaminants, including water vapor. This raises the dew point of the compressed air relative to free atmospheric air and leads to condensation within pipes as the compressed air cools downstream of the compressor.
Excessive water in compressed air, either in the liquid or vapor phase, can cause a variety of operational problems for users of compressed air. These include freezing of outdoor air lines; corrosion of equipment; fouling of processes and products.
There are various types of compressed air dryers. Their performance characteristics are typically defined by the dew point.
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