Description and purpose of the application note
Application Note
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Energy management function at adsorption dryer PDAD
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1.10
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2 Description and purpose of the application note
2.1
Introduction to the subject matter
The adsorption dryer PDAD is used to reduce the pressure dew point to -70° C for corresponding use, e.g. handling
powders, in climatised rooms and in the pharmaceuticals and chemicals industries.
Brief explanation:
Adsorption (from the Latin
adsorpio, from adsorbere (“draw in”) is the designation for the enrichment of
substances from gases or liquids at the surface of a solid, generally at the interface (matter) between two phases.
Adsorption dryers draw the moisture out of the compressed air through the use of a drying agent. While
adsorption takes place in the first container, regeneration takes place in the second container at the same time.
The cycle times are stored in the electronic controller. Pressure dew points within a range of -20 to -70 °C are
achieved with standard products. Various hot and cold processes are available for regeneration.
The cold regeneration process is used by the adsorption dryer PDAD:
For the purpose of regeneration, a portion of the already dried compressed air is caused to flow through the
previously used container cartridge and is then vented to the atmosphere.
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Simple technology
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Minimal investment costs
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Compressed air consumption
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High operating costs
