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Fulfilling a vital role in a compressed air system, a refrigerant dryer cools the compressed air to allow water vapour to condense and then be separated. Clean and dry compressed air helps make sure a system is never compromised. Furthermore, with many modern production systems and processes demanding high quality compressed air, in accordance with the air quality classes defined in ISO8573-1:2010, refrigerant dryers have a critical role to play in achieving this.

This is true for all manufacturers, where production uptime is critical for profitable and trouble-free operations. Companies will often need to adhere to strict compressed air guidelines and legislation, and therefore cannot afford to deal with corrosion and its impact on efficiency levels in air distribution systems, as well as the potential contamination of goods on production lines. To meet this need, Gardner Denver has launched its new GDD refrigerant dryer range, offering air flow rates of to 384 m3/min, the GDD refrigerated dryer range is one range for all applications. These units provide a small footprint with complete, affordable solutions for applications ranging from dry cleaning to automotive body shops, to light processing and manufacturing applications.

The high capacity units are designed for large-scale industrial, automotive and petrochemical applications.

Energy Saving Potential with Cycling Dryers

For Gardner Denver, quality and efficiency is just as important for compressed air treatment as it is for compressed air generation. With the cost of electricity being so high, any technology which can reduce the amount of power needed by the air dryer is essential. Gardner Denver has developed a range of different dryer technologies, refrigerant, sub freezing and absorption (or desiccant) dryers which can give energy savings depending on the process the air is serving.

Our range of cycling dryers shut off the refrigerant compressor during low loads, which dramatically reduces energy consumption as shown in the graph below. Using environmentally-friendly R513A, R407C refrigerants with the lowest Global Warming Potential, also contributes to reducing greenhouse gas emissions.

energy saving graph cycling dryers

Gardner Denver has launched its latest refrigerant dryer range, helping ensure compressed air systems remain reliable and energy efficient throughout their working life. With up to 40% smaller footprint, the GDMT dryer uses less floor space and is fully compatible with all compressor types (both oil-flooded and oil-free) without requiring any costly modifications to the air compressor or downstream particulate filtration.

The revolutionary GDMT dryer is the only regenerative refrigerant dryer available in the compressed air market today. It combines the sub zero pressure dew point (PDP) of a typical regenerative desiccant dryer, with the low operating and energy costs of a refrigerant dryer, to provide an extremely low total cost of ownership (TCO). Sub zero air dryers take clean, dry air to new levels of cost-efficiency across a broad spectrum of operating conditions. We have further expanded our proven technology to include the latest GDMT266 model, offering best-in-class total cost of ownership in PDP sub- freezing applications.

Watch the video to learn more:

Typical Dryer Installation Scene

The GDDF-series of refrigeration air dryers has been designed to maximise efficiency and reliability. All models are equipped with a high efficiency heat exchanger including an integrated condensate separator. The heat exchangers, completely designed and developed in our labs, are capable of achieving the highest levels of performance required from the market, together with a very low pressure drop rate.

The image below shows a typical dryer installation scene, from left to right you have the air compressor, in this case a lubricated screw air compressor. The compressed air is stored in the air tank to the right of the compressor. The sub zero dryer is shown to the right of the tank where the 2 small air filters help remove contaminates - tiny particles within the compressed air. The compressed air then passes into the dryer shown where water in the compressed air is removed by cooling the air. Small quantities of oil may be mixed with the water removed & this oil/water mixture is drained into the separator container shown on the right with the red caps. Here the water and oil are stored separately so they can be disposed of in the correct manner.

Download the PDF brochures to learn more about our refrigerant dryer ranges.

air compressor typical installation