Desiccant Dehumidifiers

There is moisture everywhere, whether generated by the introduction of outside air, infiltration, or the process itself.  Humid air in the wrong place can impact the building function or reduce the efficiency of a production process, and dehumidification is your best means of avoiding such harmful moisture.  Cooke Industries are able to offer both refrigerant based and desiccant solutions to dehumidify the air.

Desiccant dehumidifiers work better for lower humidity levels and dewpoints below 10°C (<7.6g/kg dry air), and remove moisture using a desiccant rotor wheel.  The basic principal is that the process air passes through a sector of the rotating wheel, where the desiccant medium absorbs the moisture and supplies dry air to the space.  The moisture in the rotor is then removed by a separate reactivation airstream, which is heated and passes through the other sector of the wheel, thus drying the desiccant medium, before being discharged to outside.

As a general guide, if the required room condition falls anywhere below the 10°C dewpoint line on a psychrometric chart, use a desiccant dehumidifier, whereas above the 12°C dewpoint line a refrigeration type dehumidifier may be more appropriate. If the required condition falls between these lines, a desiccant dehumidifier will probably be more effective, but a quality refrigeration dehumidifier may also be considered.

There are several different ranges and the following videos demonstrates the operation of the Consorb principal and the more efficient Recusorb principal with heat recovery.  Contact the Cooke sales team for advice on which system works best for your particular application.


Desiccant dehumidifiers for low dewpoint commercial and industrial applications from the inventor of the industry standard silica gel desiccant wheel.


Related Products