TECHNOLOGIES

Desiccant dehumidifiers

Unlike most suppliers, the Dantherm Group product ranges include both refrigerant AND desiccant drying equipment. With products that span both technologies, we can offer impartial advice that provides a solution specifically suited for your application.

The air to be dehumidified (process air), passes through a slowly rotating silica gel rotor. The desiccant material attracts the moisture to its surface, removing it from the air stream (dry air). A second, smaller air stream (reactivation air) usually heated to around 120°C, is required to remove the moisture from the rotor. This (wet) air must then be exhausted to atmosphere using a duct. Slowly rotating the rotor through both airstreams creates a continuous dehumidification process.

Advantages:

  • High moisture removal rate in a single air pass
  • Can achieve very low absolute humidity levels
  • Can work in low temperatures
  • Can work in very low humidity

Disadvantages:

  • High energy consumption
  • Low specific moisture extraction (kg/kWh)
  • Ducting from/to outside for reactivation air and wet air
  • High rotor replacement costs

Where used:

Generally, where a very low relative humidity or absolute humidity is required, and/or where the operating temp is below 3°C.

  • Pharmaceutical
  • Food
  • Confectionery
  • Specialist manufacturing that requires very low RH
  • Low temp storage and freezer rooms

Where not used:

  • Recirculation applications that require RH above 40%
  • Applications that are sensitive to high supply air temperature
  • Swimming pools
  • Sites with limited power supply (unless mains gas or steam reactivation is available)
  • Areas that have no access to outside walls

Associated products

DT 1300-2300-3300

An efficient, cost effective range of packaged 4-hole adsorption dehumidifiers, designed… ...read more

DT 13000-19000-27000

An efficient, cost effective range of packaged 4-hole adsorption dehumidifiers, designed… ...read more

DT 160-250-440

An efficient, compact, cost effective range of 3-hole packaged 3-hole adsorption dehumidifiers,… ...read more

DT 210-440-400

An efficient, compact, cost effective range of packaged 4-hole adsorption dehumidifiers,… ...read more

DT 3500

An efficient, cost effective packaged 4-hole adsorption dehumidifier, designed for humidity… ...read more

DT 4500-5800

An efficient, cost effective range of packaged 4-hole adsorption dehumidifiers, designed… ...read more

DT 6000-8000

An efficient, cost effective range of packaged 4-hole adsorption dehumidifiers, designed… ...read more

DT 800-1100

An efficient, cost effective range of packaged 4-hole adsorption dehumidifiers, designed… ...read more

Desiccant Dehumidifiers

DTI 1500-5000

The DehuTech DTI range of desiccant adsorption dehumidifiers are specially designed for… ...read more

DTM 3300

The DehuTech mobile range are fully packaged ruggedized desiccant dehumidifiers ...read more

More information

Desiccant technology

How a desiccant dehumidifier works...read more


Contact (UK)

Jeremy Neale

Jeremy Neale

Commercial Dehumidification
Direct: +44 (0)1621 878 534
Mobile: +44 (0)7432 744 722
Contact Jeremy


Contact (International)

+44 (0)1621 856 611
International Enquiries


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