Condensation Compressed Air Dryer – Efficient Moisture Removal for Industrial Use
A refrigerated compressed air dryer (sometimes also called a cooling dryer) removes moisture from compressor-compressed air by cooling it to a low temperature. The unit contains a refrigeration circuit that cools the incoming air, usually to about +3 °C. This condenses the water vapour present in the air – the vapour turns into liquid (condensate). The condensed water is then separated by a separator and drained away by an automatic condensate drain. After the moisture is removed, the dry air is slightly reheated (by heat recovery) so that moisture does not condense on the piping after the dryer. The result is dry air with a pressure dew point typically around +3 °C, which is suitable for most ordinary applications.
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Advantages
- Relatively lower purchase cost than more advanced dryer types.
- Undemanding operation and simple maintenance; no cartridges need replacing.
- It works without any loss of compressed air (it needs no purge air to run).
- A proven, reliable solution for a wide range of compressors and air treatment systems.
Disadvantages
- Limited pressure dew point range – it can only reduce moisture to roughly +3 °C, which may not suffice for applications needing extremely dry air (outdoor lines in freezing conditions, for example).
- Continuous electricity consumption (driving the refrigeration compressor, fan and control system).
- The need to ensure good ventilation and suitable ambient conditions: it generates waste heat during operation, which must be carried away, otherwise drying efficiency falls.
- With insufficient maintenance (a clogged refrigeration condenser, for instance) it can gradually lose output and may not reach the required dew point.
Areas of use
Refrigerated dryers are among the most widely used solutions for drying compressed air in workshops and industry. They provide sufficiently dry air for most air tools, paint shops, production lines and other machinery. They are typically installed in car services, engineering and wood-processing plants, in packaging and filling operations, or generally wherever excess moisture could cause corrosion, surface defects or other problems. They suit every situation where a pressure dew point of around +3 °C is enough and extreme drying is neither economical nor necessary.
Compared with other dryer types
Compared with other technologies, the refrigerated dryer offers a balanced ratio of price and performance. If you do not need an extremely low dew point, it tends to be the first choice ahead of more expensive adsorption compressed air dryers, which can reach −40 °C or lower dew points. Against them, the refrigerated type has the advantage of lower running costs and no air loss. On the other hand, for special requirements – very small air flows or mobile equipment, for instance – membrane dryers, which work without electricity, may come in handy. For maximum air quality, fine filtration or activated carbon towers, which also remove oil vapours and odours, are often added after the refrigerated dryer.
Do not forget: For a refrigerated dryer to work properly it is advisable to fit an upstream compressed air filter (mechanical/coalescing) that captures contaminants and oil aerosols before they enter the dryer. This protects the dryer from fouling and increases both its efficiency and its life. Further useful information on air treatment is in our advice section, in the article "Why and how to dry compressed air from a compressor".
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RDP condensation dryers; pressure dew point +3 °C
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Condensation dryers WDF; dew point +3°C with filters
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HDI air dryers; pressure dew point +4°C
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RDL condensing dryers; pressure dew point +5°C
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ADRY air dryers; smaller adsorption -40°C
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BDRY air dryers; large adsorption -40°C
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MADRY air dryers; membrane -40°C
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Activated carbon columns; activated carbon separation
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Product sorting
List of products
Bypass piping for MDX400 to 1800 condensation dryers for easy replacement of filter cartridges without the need for shutdown.Simple assembly during dryer installation. The...
Condensing compressed air dryer for dew point +5°C. Maximum inlet pressure is 13 bar with a flow rate of up to 75 m³/hr (1,250 l/min) and connection via G 3/4" male thread. The...
Condensing compressed air dryer for dew point +5°C. The maximum inlet pressure is 13 bar with a flow rate of up to 100 m³/hr (1,666 l/min) and connection via a G 1" male thread....
Condensing compressed air dryer for dew point +5°C. Maximum inlet pressure is 13 bar with a flow rate of up to 35 m³/hr (583 l/min) and connection via external thread G 1/2"....
Condensation dryer for compressed air to +3°C dew point. Maximum inlet pressure is 14 bar with a flow rate of up to 35 m³/hr (583 l/min) and connection via external G3/4"...
The WDF-70 condensing air dryer provides efficient moisture removal from compressed air with a flow rate of 70 m³/h (1,166 l/min) and a pressure dew point of +3 °C. Thanks to...
The WDF-155 condensing air dryer effectively removes moisture from compressed air and achieves a pressure dew point of +3 °C. With a flow rate of 155 m³/h (2 583 l/min), it is...
The WDF-53 condensing air dryer efficiently removes moisture at a flow rate of 53 m³/h (883 l/min) and reaches a dew point of +3 °C. Integrated 1 µm and 0.01 µm filters ensure...
The WDF-100 condensing air dryer provides efficient compressed air drying with a flow rate of 100 m³/h (1 667 l/min) and a pressure dew point of +3 °C. Integrated filters of 1...
Condensation dryer for compressed air to +3°C dew point. Maximum inlet pressure is 14 bar with a flow rate of up to 144 m³/hour (2,333 l/min) and connection via external thread...
Condensation dryer for compressed air to +3°C dew point. Maximum input pressure is 14 bar with a flow rate of up to 75 m³/hr (1,250 l/min) and connection via external thread...
Condensation dryer for compressed air to a dew point of +3°C. Maximum input pressure is 14 bar with a flow rate of up to 100 m³/h (1,666 l/min) and connection via external...
Condensation dryer for compressed air to +3°C dew point. Maximum input pressure is 14 bar with a flow rate of up to 235 m³/h (3,916 l/min) and connection via external thread G1...
Condensation dryer for compressed air to +3°C dew point. Maximum input pressure is 14 bar with a flow rate of up to 180 m³/hour (3,000 l/min) and connection via external thread...
Condensing compressed air dryer for dew point +5°C. The maximum inlet pressure is 13 bar with a flow rate of up to 180 m³/hr (3,000 l/min) and connection via a G 1" male thread....
Condensing compressed air dryer for dew point +5°C. The maximum inlet pressure is 13 bar with a flow rate of up to 235 m³/hr (3 916 l/min) and connection via a G 1" male thread....
Condensation dryer for compressed air to +3°C dew point. Maximum input pressure is 14 bar with a flow rate of up to 1,150 m³/hour (19,166 l/min) and connection via external...
Condensation dryer for compressed air to +3°C dew point. Maximum input pressure is 14 bar with a flow rate of up to 1,300 m³/hour (21,666 l/min) and connection via external...
Condensation dryer for compressed air to +3°C dew point. Maximum input pressure is 14 bar with a flow rate of up to 1,500 m³/hour (25,000 l/min) and connection via external...
Condensation dryer for compressed air to +3°C dew point. Maximum input pressure is 14 bar with a flow rate of up to 1,900 m³/h (31,666 l/min) and connection via external thread...
Condensation dryer for compressed air to +3°C dew point. Maximum input pressure is 14 bar with a flow rate of up to 300 m³/hour (5,000 l/min) and connection via external thread...
Condensation dryer for compressed air to +3°C dew point. Maximum input pressure is 14 bar with a flow rate of up to 380 m³/h (6,333 l/min) and connection via external thread G1...
Condensation dryer for compressed air to +3°C dew point. Maximum input pressure is 14 bar with a flow rate of up to 480 m³/hr (8,000 l/min) and connection via external thread G1...
Condensation dryer for compressed air to +3°C dew point. The maximum input pressure is 14 bar with a flow rate of up to 50 m³/h (833 l/min) and a G1" external thread connection....
Condensation dryer for compressed air to +3°C dew point. The maximum input pressure is 14 bar with a flow rate of up to 600 m³/h (10,000 l/min) and connection via external...
Condensation dryer for compressed air to +3°C dew point. Maximum input pressure is 14 bar with a flow rate of up to 750 m³/hour (12,500 l/min) and connection via external thread...
Condensation dryer for compressed air to +3°C dew point. Maximum input pressure is 14 bar with a flow rate of up to 950 m³/h (15,833 l/min) and connection via external thread...
Condensation dryer of compressed air to a dew point of +3°C. Maximum input pressure is 14 bar with a flow rate of up to 20 m³/hr (333 l/min) and connection via external thread...
The extremely quiet and dust-free operation of the compressed air condensation dryer up to a flow rate of 108 m³/hr from the compressor at a 3°C dew point enables use in...
The extremely quiet and dust-free operation of the compressed air condensation dryer up to a flow rate of 12 m³/hr from the compressor at a 3°C dew point enables use in...
The extremely quiet and dust-free operation of the compressed air condensation dryer up to a flow rate of 1,300 m³/hr from the compressor at a 3°C dew point enables use in...
The extremely quiet and dust-free operation of the compressed air condensation dryer up to a flow rate of 144 m³/hr from the compressor at a 3°C dew point allows for use in...
The extremely quiet and dust-free operation of the compressed air condensation dryer up to a flow rate of 180 m³/hr from the compressor at a 3°C dew point enables use in...
The extremely quiet and dust-free operation of the compressed air condensation dryer up to a flow rate of 225 m³/hr from the compressor at a 3°C dew point allows use in...
The extremely quiet and dust-free operation of the compressed air condensation dryer up to a flow rate of 25 m³/hr from the compressor at a 3°C dew point enables use in...
The extremely quiet and dust-free operation of the compressed air condensation dryer up to a flow rate of 260 m³/hr from the compressor at a 3°C dew point enables use in...
The extremely quiet and dust-free operation of the compressed air condensation dryer up to a flow rate of 300 m³/hr from the compressor at a 3°C dew point enables use in...
The extremely quiet and dust-free operation of the compressed air condensation dryer up to a flow rate of 360 m³/hr from the compressor at a 3°C dew point allows use in...
The extremely quiet and dust-free operation of the compressed air condensation dryer up to a flow rate of 42 m³/hr from the compressor at a 3°C dew point enables use in...
The extremely quiet and dust-free operation of the compressed air condensation dryer up to a flow rate of 480 m³/hr from the compressor at a 3°C dew point enables use in...