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Applications
The DehuTech Dehumidifier is of the solid
desiccant wheel type designed to dry air of
atmospheric pressure. The dehumidifier can be
used for drying air of up to 100 % relative
humidity (RH) with temperatures from -30°C to
+40°C.
The applications are numerous and wide
spread. Below are some examples:
• Controlling humidity levels in production
processes.
• Drying of temperature sensitive products.
• Maintaining correct humidity in storage
areas.
• Protection of equipment sensitive to
corrosion.
• Controlling humidity levels in museums
and archives.
• Drying after water damage and drying of
buildings during construction.
• Climatic improvements in damp areas.
© 2016 DehuTech AB - Subject to change without notice
Method of operation
The dehumidifier operates with two air
streams. A larger air stream to be dehumidified,
and a smaller air stream to exhaust the
moisture out of the desiccant rotor.
Two fans inside the dehumidifier create air
streams which travel through the desiccant
rotor in opposite directions.
The larger air volume, the process air, passes
through the slowly rotating silica gel rotor.
Silica gel is a hygroscopic material adsorbing
water vapour direct from the air. When passing
through the rotor the humidity of the air is
reduced, whilst the moisture content of the
rotor material increases. On exiting the rotor
the dried air is introduced into the area, or the
process to be dehumidified. The adsorption
process works in temperatures from -30°C to
+40°C.
The smaller air volume, the reactivation air,
adsorbs the moisture from the silica gel rotor.
This reactivation air is heated by an internal
heater to a temperature of approximately
+120°C. As the reactivation air passes through
the rotor, in an opposite direction to the dry air,
it will decrease the moisture content of the
rotor material. The reactivation air will leave
the dehumidifier as warm, moist air, which is
then exhausted out from the building.
DT-3500 - 5
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