Desiccant dehumidifiers offer dehumidification methods including:

Desiccant Wheel Adsorption Dehumidification

The thin plates of moisture-absorbing agents are processed into honeycomb-shaped wheels, which are then ventilated to achieve dehumidification.

2. Liquid Absorption Dehumidification

There are two types of liquid absorption dehumidification. One uses a lithium chloride solution spray to absorb moisture, which can lower the dew point to around, but the equipment is larger and requires the replacement of the absorbent liquid. The other employs capillary action to adsorb moisture onto a solid desiccant, which can also reduce the dew point, but the equipment size increases with the adsorption area.

3. Compression Dehumidification

Compressing and cooling moist air to separate its moisture, achieving dehumidification. Note that this dehumidification method is effective in low air volume situations but not suitable for high air volume.

4. Cooling and Dehumidification

Cooling the air below the dew point and then removing the condensed water achieves dehumidification. This method is effective in situations where the dew point is above.

Dehumidifier and Drier Working Principle:

The dehumidification and drying system (compressor, evaporator, condenser) cools the surface cooler to below the air dew point temperature. A fan draws in humid air into the unit for heat exchange with the cooler. The water vapor in the moist air condenses into water droplets, which are then expelled from the unit or collected in a water tank within the unit. This produces dry air that is released into the room, thus continuously reducing indoor humidity and making the damp space progressively drier.

Industrial dehumidifiers and dryers can also opt for temperature-controlled models, which can automatically adjust the temperature based on the drying level of the product. Heavy-duty industrial dehumidifiers are typically available, but there is also the option of using general-purpose air dehumidifiers for drying.