Parker Modular Desiccant Dryers are the ideal solution for compressed air users everywhere.
Moisture is a big problem for compressed air users. Parker Modular Desiccant Dryers are the solution.
Moisture is one of the major contaminants in compressed air systems. It occurs because water vapor present in the atmosphere is drawn into the compressor, where its’ concentration can rise dramatically as temperature increases.
Of the ten contaminants commonly found in a compressed air system, water vapor, liquid water and aerosols account for the majority of problems experienced by the compressed air user.
Unseen water vapor condenses into liquid water.
Large volumes of atmospheric air enter the compressed air system through the compressor intake. As the air is compressed, its temperature increases significantly, causing it to become fully saturated with water vapor. Water vapor retention in air is dependent upon its temperature and pressure; the higher the temperature, the more water vapor that can be retained; the higher the pressure, the greater the amount of condensed water that will be released.
After the compression stage, the now saturated air is cooled to a usable temperature by an aftercooler, causing the retained water vapor to be condensed into liquid water which is then removed by a condensate drain. The air leaving the aftercooler is now 100% saturated with water vapor. As the compressed air moves downstream to storage vessels and through piping, its temperature falls and concentrated vapor will sublimate as droplets of liquid water.
If not removed, this will cause corrosion of the distribution system, blocked or frozen valves and machinery, as well as providing an ideal breeding ground for micro-organisms and bacteria.
To eliminate these moisture problems, all viable water vapor must be removed by desiccant dryers, before it can enter the compressed air system. Parker Desiccant Dryers are the ideal solution.
How much water can be found in a typical compressed air system?
The amount of water in a compressed air system is staggering. A small 100 cfm (2.8 m3/min) compressor and refrigerated air dryer combination, operating for 4000 hours in typical North American climatic conditions can produce approximately 2,200 gallons or 10,000 liters of liquid condensate per year.
Oil is often perceived to be the most prolific contaminant as it is can be seen emanating from open drain points and exhausting valves. In the majority of instances, it is actually oily condensate (oil mixed with water) that is being observed.
In reality, oil accounts for less than 0.1% of the overall volume.
This example illustrates the use of a small compressor to highlight the large volume of condensate produced. Up to 99.9% of the total liquid contamination found in a compressed air system is water.
If a compressed air system was operated in warmer, more humid climates, with larger compressors, or run for longer periods, the volume of condensate would increase significantly.
By combining the proven benefits of desiccant dryers with modern design, Parker domnick hunter has produced an extremely compact and reliable desiccant dryer system to totally dry and clean compressed air.
Parker Modular Desiccant Dryers Benefits
Highest quality air
- Clean, oil-free and dry compressed air in accordance with all editions of ISO8573-1, the international standard for compressed air quality
- Maximum savings
Dry air eliminates microbiological growth
- Preventing product spoilage, recall and litigation
Dry air means zero corrosion
- Preventing product spoilage and damage
Parker Modular Desiccant Dryers Features
- 100% standby at a fraction of the cost of twin tower designs
- Corrosion resistance due to alochroming and epoxy painting
- Constant dewpoint performance thanks to snowstorm filling
- Half the size of conventional dryers
Approvals to international standards
- UL, CSA, CRN, PED, CE
Easy and flexible installation
- Minimal space required
- Reduced downtime
Reduced noise pollution
- Less than 85 dBA
The Parker domnick hunter PNEUDRI ranges of desiccant dryers have proven to be the ideal solution for many thousands of compressed air users worldwide in a wide variety of industries.