Dehumidification process

The adsorption dehumidifier technology utilizes naturally occurring desiccant materials, like silica gel, which have a high chemical and physical affinity for water vapor. This technology outperforms condensation-based methods, making it ideal for environments with stringent humidity control requirements, such as cleanrooms.

Principle of Operation

The TFT AirDry dehumidifier operates by utilizing two streams of air: the primary airflow, known as "process air", and a secondary airflow, called the “regeneration air” used for regenerating the dehumidification rotor. A fan inside the unit creates these two airflows, which pass through the rotor in opposite directions. The process air flows through a desiccant rotor impregnated with silica gel, a highly hygroscopic material that absorbs water vapor from the air. As the process air passes through the rotor, it releases its moisture, which is then absorbed by the silica gel.

The dehumidified air is directed into the production room or process to maintain optimal humidity levels. The dehumidification process is effective within a temperature range of -30°C (-22°F) to +40°C (104°F). The rotor, which rotates very slowly during the process, is equipped with a transmission system and a reduction gearbox driven by a belt. This ensures smooth and efficient operation of the dehumidifier.

The secondary airflow is heated by a battery inside the dehumidifier to approximately +100°C (212°F). This heated air passes through the rotor in the opposite direction of the process air, causing the rotor to release the moisture it absorbed. This process restores the rotor’s ability to absorb moisture, and the regeneration air, now warm and moist, is expelled outside the treated environment.

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