As referenced, dryers remove excess water from compressed air. With the right type, you'll meet industry standards while protecting your air compressor setup.
There are three types of dryers to consider, refrigerant (fridge), adsorption, and membrane. Each comes with its own benefits to help you balance budgetary concerns and air quality standards.
Refrigerant dryers are the most common type, and typically maintain a PDP of +3 °C/37.4 °F, suitable for most applications. They consist of an air-to-air heat exchanger and air-to-refrigerant heat exchanger. This type of dryer is either air-cooled or water-cooled. Pneumatech also offers non-cycling, cycling and VSD fridge fryers to meet your investment and efficiency requirements.
Adsorption / desiccant
Adsorption or desiccant dryers use hygroscopic material like silica gel to adsorb moisture contained in compressed air. The air flows over the material and is effectively dried. These dryers achieve a PDP from -10 °C/14 °F to -70 °C/-94 °F.
To maintain consistent operations, adsorption dryers come with two drying vessels. The first is used for drying incoming compressed air, while the second is used for desiccant regeneration. There are three types of regeneration methods our dryers use: purge regeneration (“heatless-type dryers”), heated purge, and blower.
Membrane dryers use a process called "selective permeation." They consist of a cylinder housing thousands of tiny hollow polymer fibers with an inner coating. Through selective permeability, these fibers remove water vapor, achieving standard PDP levels of +3 °C/37.4 °F.
PDP is used to define the water content in compressed air. Essentially, it is the temperature at which water vapor condenses at the working pressure. Low PDP values indicate small amounts of moisture in compressed air.
In addition to ensuring the reliability and integrity of your air system, compressed air dryers are essential for meeting ISO 8573-1 standards. This internationally recognized rating dictates how many contaminants, including water, your air is allowed to contain after treatment.
The standard specifies air quality classes, including the acceptable PDP levels. For example, ISO 8537-1 class 1 requires a PDP of -70 °C/-94 °F, while class 4 indicates +3 °C/37.4 °F.
Learn more about our different dryer products here below.
Compressed air dryers play a vital role in various industrial and professional applications, here are just a few examples.
Just like compressed air, cement can be found all around us. Our modern world would be unimaginable without either. Therefore, it makes sense that compressed air plays an important role in the making of cement. However, quality standards do apply for compressed air for cement production. That's because untreated compressed air can compromise the final product.
Want to know more about different air compressor dryer types? Check our knowledge library.
Refrigerated dryers are the most common type of air treatment dryer used in multiple applications from automotive shops to manufacturing facilities. Refrigerated dryers come in both cycling and non-cycling variants, but what exactly is a cycling refrigerated dryer?
When air compressors are used in a brewery for bottling, kegwashing, etc., the compression of ambient air pulls in all the humidity and particulates that are floating around in the air. That concentration of liquid and contaminates will get down stream of the compressor and cause many issues for a brewery of any size.
Pneumatech offers much more than top-quality compressed air dryers:
- As the air treatment and gas generation specialist, we can meet all your compressed air quality and industrial gas needs. This includes a wide range of filtration equipment and air quality measurement services.
- Our experts are always ready to help. Just share your air quality requirements and they can put together the optimal system for you.
Need help navigating our compressed air dryer offer? Our experts are always ready to put together the solution that best meets your needs.