This is a tool we use alongside dehumidifiers for larger buildings. Desiccants operate differently than standard low grain refrigerant dehumidifiers. Desiccants do not collect water through condensation. They vent moisture-laden air from inside the structure to outside the structure using a ventilation system. These are large units that sit outside the structure with venting tubes and air input tubes.
The tubes come from and go to the affected building. They create the greatest vapor pressure and are best used when trying to dry wood flooring, plaster, or concrete. They work on the principle of absorption rather then condensation. In this process, water vapor is adsorbed by a silica gel. The silica gel is then activated by air movement. This energy causes the desiccant to push the water vapor; Releasing its moisture to the outside air.