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Refrigerant Air Dryers
Compressed air explained - why refine compressed air?
Air is a colorless, odorless, tasteless mixture of many gases, primarily nitrogen and oxygen. Air is naturally contaminated with solid particles, such as dust, sand, soot and salt crystals. This contamination varies with differing environments and altitude.
Water vapor is another natural ingredient which can be found in variable amounts in the air. The amount of water vapor and contamination of the air plays a vital role in the compression process and in the quality of the air delivered by the compressor.
The damaging and corrosive properties of water are well known. Untreated air at atmospheric pressure contains large amounts of water and other contaminants such as oil droplets and dirt particles.
When the air is compressed the concentration of moisture and other contaminants increases. If allowed to remain in the system this corrosive mixture has a detrimental effect on pneumatic equipment, causing unnecessary production downtime, product spoilage and reduced equipment life.
Compressed air filters remove the oil and dirt content while compressed air dryers remove water vapor before air reaches the point of use.
Reliable refrigerant dryers, proven in thousands of applications
Reliable refrigerant dryers, proven in thousands of applications, ensure a reliable supply of high-quality air for your processes. CompAir refrigerant dryers are characterised by their energy efficiency, which helps to reduce running costs, thanks to their patented heat exchanger technology.
CompAir offers a range of refrigerated air drying solutions including:
High capacity refrigeration dryers
Models F120HS to F180HS are so named because the volume flow of each model ranges from 12 to 180 m³/min.
- High quality heat exchanger with low pressure loss
- +3°C pressure dew point
- Low operating costs
- Environmentally friendly R134a and R407c refrigerants
- Effective condensate separation
- Minimum space requirement due to compact dimensions
- Easy to install, operate and maintain
High capacity compressed air refrigerant dryer F120HS
Low and medium-capacity refrigerant dryers
Models F4S to F100S have volume flows ranging from 0.4 to 10 m³/min. These are low and medium-capacity dryers.
Low capacity refrigerant dryer
Adsorption Air Dryers
Absorption Dryer
CompAir offers a range of high efficiency heatless and heat regenerative compressed air dryers for the removal of water vapour from a compressed air supply. Adsorption compressed air dryers remove moisture by passing air over a regenerative desiccant material, which attracts and retains the water vapour molecules. The term pressure dew point refers to the temperature at which water condensation will occur, a typical pressure dew point specified for an adsorption dryer is -40°C which prevents corrosion and inhibits the growth of microorganisms.
Air absorption dryer
Air absorption dryer
The CompAir A-Series dryers use the heat-less, or PSA, method to regenerate the adsorbent material. These are the simplest adsorption type available and have long been the choice for many industries and applications. Reliable and cost effective and for small to medium flow systems, these are often the only viable technology available. Modular versions such as the A-Series are an even more reliable, smaller, more compact and lightweight solution. They can be installed in the compressor room or at the point of use.
Compared to traditional twin tower dryer designs, the CompAir compressed air dryer’s unique modular construction is typically a lot smaller and lighter than comparable twin tower desiccant dryers. Providing a simple to install and easy to maintain design which is fully corrosion protected and supported by numerous international standard approvals.
Heatless desiccant dryers
A_XS and A_TX series adsorption dryers have activated carbon stages & are a reliable and proven purification unit which meets extreme requirements when the compressed air must not only be dried, but also be odourless and free from oil.
Heat regenerative desiccant dryers
Series A_TV and A_RS series adsorption dryers utilise active-heating, combined with intensive vacuum supported cooling, which defines the industry standard for heat-regenerative dryers.
A series modular air dryer
ATX compressed air dryer
HOC Dryers
Hybrid Dryers
Innovative combined refrigeration/adsorption dryer technology
CompAir's innovative CDT Series of compressed air dryers from 2.5 to 34 m³/min combines refrigerant and adsorption dryer technology delivering high quality compressed air at low energy consumption levels.
The unique technology combination of the CDT Series offers lower energy consumption compared to traditional heatless and heat regenerative adsorption dryer technology.
CDT Hybrid compressed air dryers
Typical Installation:
CTD Hybrid compressed air dryer installation
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BPI Heanors Case Study
Related Products & Services
CompAir is part of Gardner Denver, Inc., a leading global manufacturer of highly-engineered, critical flow-control products, Gardner Denver is headquartered in Milwaukee, Wisconsin, USA and has facilities in more than 30 countries. To learn more about the company, visit
