The DryGenic liquid desiccant air dehumidifier removes moisture from the air by using a liquid desiccant solution (Lithium Chloride): the hygroscopic substance called DrySol®. Unlike desiccant wheel dehumidifiers that use a solid desiccant material, DryGenic® uses a liquid solution for the dehumidification process.

A Ventilex DryGenic® system consists of two essential components: a conditioner and a regenerator, each with its own pump.

Animation of the DryGenic liquid desiccant working principle

Start the video and see how it works:


DryGenic Liquid Dessicant technology explained step-by-step

  • Air Intake: Humid and relatively warm air is drawn into the DryGenic® conditioner through a fan.
  • Contact with the Drysol® liquid desiccant: In the spray chamber, the incoming air is brought into contact with the DrySol®
  • Absorption of Moisture: The Drysol® has a strong affinity for moisture and absorbs water vapor from the incoming air. This absorption process takes place in the DrySol®
  • Cooling the air: By cooling the DrySol® before spraying the process air is cooled down. In this way air temperature and air humidity are both controlled in the same system but can be adjusted independently.
  • Regeneration: After absorbing moisture, the DrySol® becomes diluted and needs to be regenerated (re-concentrated) to regain its drying capacity. This is done by heating the diluted DrySol® to release the absorbed moisture. The regeneration process involves the following steps:
    • Heating: The DrySol® is heated to a high temperature, causing the water vapor to evaporate from the solution.
    • Moist Air Generation: The water vapor is released as hot, moist air.
  • Condensation: The hot, moist air is cooled to condense the water vapor into a liquid form, which is separated from the desiccant.
  • Re-concentration: The concentrated DrySol® solution, with the moisture removed, is returned to the conditioner for further dehumidification of the process air.
  • Drying Proceess: The air exiting the DryGenic® conditioner is now much drier and less humid than when it entered.
  • Exhaust: The relatively warm, moist air generated during the regeneration process is exhausted outside.
  • Repeat: The cycle continues, with the Drysol®  absorbing moisture and cooling the air, and the regeneration process ensuring the desiccant remains effective.

The DryGenic liquid desiccant dehumidifiers are very successfully used in industrial applications where precise humidity control is essential.


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