Moisture in the compressed air of pneumatic systems causes the wear and corrosion of parts. This is turn results in the consumption of more compressed air and increase in energy usage. At some point the damage caused by compressed air moisture requires that components be replaced or repaired.
The downtime and cost of repairs can be costly and have a severe negative impact on productivity and a plant’s bottom line.
Air dryers remove water vapor from the air lowering its “dew point’ or the temperature to which the air can be cooled before condensation occurs.
The savings accrued by installing air dryers to pneumatic systems will more than cover the investment over the long term.
Types of Air Dryers.
There are several air dryer types. The most common types include:
- Deliquescent: These air dryers use a chemical desiccant that absorbs water vapor or condensation
- Regenerative Desiccant: These air dryers remove water vapor by absorbing it on the surface of a microscopically porous surface composed of silica gel or other material.
- Refrigeration: These air dryers condense moisture from compressed air by cooling and collecting it.
- Membrane: These air dryers remove water vapor by allowing it to pass through a membrane when there is a differential in moisture on either side of the membrane.
Each of the above air dryer typed has advantages and disadvantages for specific applications and is available in a variety of sizes and configurations.
Installation of compressed air dryers on pneumatic devices can reduce downtime, protect your equipment, and save money in the long run.