19 May, 2022

Gardner Denver dual technology dryer cuts energy costs

09 December, 2016

Gardner Denver has launched its new dual technology dryer, the GDDT, helping to significantly cut energy costs by combining refrigeration and adsorption technology into one compressed air treatment package.

The technology is claimed to use 60% less power than traditional heatless adsorption ‘twin tower’ dryers, substantially reducing energy bills. Gardner Denver adds that low running costs are further achieved through the system consuming considerably less purge air – only 5% – compared with 15-20% for heatless dryers and 7% for heated dryers, resulting in a greater volume of air downstream.

Up to 30% lower regeneration costs

Offering up to 30% lower regeneration costs when compared with conventional heat regenerative dryers, this advanced technology means it is possible for a business to increase the volume of useable compressed air from its existing system without having to add a new compressor, helping companies to reduce total cost of ownership while improving operational efficiencies.

The GDDT first removes water vapour from the incoming untreated, humid compressed air, before passing through to the adsorption stage, where a series of high-performance oil/water aerosol and particle removal filters ensure the moisture content is reduced to a standard dew point of -40degC and is user configurable from +3degC pdp to -70degC pdp.

With capacities ranging from 2.5 m3/min to 34 m3/min, Gardner Denver believes the GDDT range is set to become the technology of choice for those seeking a high-performance, efficient and reliable compressed air dryer.

Merging refrigeration and adsorption drying techniques

Keith Atkinson, global product manager for downstream equipment at Gardner Denver, said: “The GDDT is a solution that merges refrigeration and adsorption drying techniques into a single, flexible unit. Delivering constant dew point performance, its technical capabilities, such as low purge air consumption and reduced regeneration costs, ensure the GDDT is one of the most advanced energy efficient dryer technologies available on the market.

“The unit is fitted with the latest ISO-12500 approved oil-water aerosol and particulate filters, ensuring equipment is not affected or damaged by contaminants from the surrounding environment.

“We also offer an optional seasonal bypass function on select models, offering the flexibility to reach dew points above zero in summer and below zero in winter, as well as an optional touch-screen display control panel.

“The fact the system uses small desiccant vessels also means that the unit – depending on the model opted for – may be exempt from periodic inspections in the UK, helping to cut downtime and expense.”


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