All atmospheric, or ambient air contains moisture in the form of water vapour, which will condense into liquid water when the air cools to its saturation point, or dew point, the point where it can no longer hold water vapour.
The amount of moisture in ambient air depends upon its temperature and relative humidity. The warmer the temperature, the more moisture ambient air can hold. A rule of thumb is that the amount of moisture air can contain at a saturated condition doubles for every 20ºF/7ºC increase in temperature.
This means that the amount of potential condensate present in air is greater in summer than in winter, during the day than at night, and in warmer locations like the Southern US, versus colder locations like Canada.
When ambient air is compressed, a considerably amount of heat is produced in the process. As this hot, compressed air exits the air compressor and travels through the distribution system, the compressed air cools down to ambient, or room temperature. This causes the water vapour in the compressed air to condense into liquid water in the distribution system.
Compressed air dryers cool down compressed air to a temperature where moisture in the compressed air is condensed into a liquid state, and consequently removed from the compressed air distribution system. It is critical that the air dryer dries the air at a dew point temperature below the lowest temperature to which the compressed air will be exposed. Incorporating an air dryer for your particular application will ensure the delivery of dry, cool compressed air to your compressed air distribution system.
So why is the treatment of compressed air important? Dry, cool air is critical in many applications, as well as essential in ensuring an air system’s reliability and efficiency.
Employing an air dryer ensures the delivery of dry, cool compressed air, preventing moisture from reaching sensitive areas downstream from the air compressor and damaging pneumatic equipment and tools, as well as ensuring production quality standards are not compromised.
Dry, cool air is critical for applications such as auto body collision repair shops because the end product is directly affected by the quality of compressed air.
Compressed air delivered directly from an air compressor is usually not suitable for its intended use due to many factors:
We can see that compressed air treatment is critical in ensuring an efficient and effective compressed air system.
Let’s discuss the features and benefits of the ProDry® ASD refrigerated air dryer (used with rotary screw air compressors). It’s a standard temperature air dryer with a maximum air inlet temperature of 120ºF or 48ºC. It is microprocessor controlled and maintains a stable dew point.
Let's discuss the features and benefits of the ProDry® HTD refrigerated air dryer. It's a high temperature air dryer with a maximum air inlet temperature of 180ºF or 82ºC (Used with DV Systems' reciprocating air compressors). It is microprocessor controlled and maintains a stable dew point.
The dairy industry uses dry, cool, clean compressed air to pneumatically operate state-of-the-art automation technology