REMKO SLE 20, Операция, Технология, Запасные части.

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It is noticeable that the rate of
corrosion is insignificant below
50% relative humidity and can be
disregarded below 40% relative
humidity.
The rate of corrosion increases
noticeably from 60% relative
humidity. This humidity damage
limit applies also to numerous
other materials, e.g. powders,
packaging, wood or electronic
equipment.
Buildings can be dried out in
different ways:
1.
Heating and air exchange:
The room air is heated to absorb
moisture to subsequently be
discharged to the atmosphere.
The total input energy is lost
with the discharged, moist air.
2. Dehumidification:
The moist air in an enclosed
room is continuously
dehumidified according to the
condensation principle.
The interrelated processes
occurring during dehumidification
are based on physical laws.
These are illustrated here in
simplified form in order to explain
the principle of dehumidification.
The use of REMKO
dehumidifiers
– No matter how well windows
and doors are insulated, damp
and moisture can penetrate
even through thick concrete
walls.
– The water volumes required
for binding concrete, mortar,
plaster, etc. are diffused out
initially after 1-2 months under
certain circumstances.
– Even moisture that has
penetrated masonry following
high water or flooding is
released very slowly.
– This applies similarly to e.g.
moisture contained in stored
materials.
The moisture (water vapour)
escaping from buildings or
materials is absorbed by the
ambient air. This increases their
moisture content and ultimately
results in corrosion, mould, rot,
peeling of paint coatings and other
unwanted moisture damage.
The diagram opposite shows an
example of the rate of corrosion,
e.g. for metal at different humidity
levels.
Dehumidification
In terms of energy consumption,
dehumidification has one decisive
advantage:
Energy expenditure is restricted
solely to the existing room volume.
The mechanical heat released
through the dehumidification
process is returned to the room.
With correct use, the dehumidifier
consumes only about 25% of the
energy required for the “heating
and ventilation” principle.
Relative humidity
Ambient air is a gas mixture
and always contains a certain
amount of water in the form of
water vapour. This water volume
is expressed in g per kg dry air
(absolute water content).
1m
3
air weighs about 1.2 kg at
20°C
Depending on the temperature,
each kg of air is only able to
absorb a certain amount of water
vapour. When this absorptive
capacity is reached, reference is
made to “saturated” air; this has a
relative humidity of 100%.
Relative humidity is therefore
understood to be the ratio
between the amount of water
vapour currently contained in
the air and the maximum water
vapour volume at the same
temperature.
The ability of air to absorb water
vapour increases with increasing
temperature. This means that
the maximum (= absolute) water
content increases with increasing
temperature.
Rate of corrosion
Rel. humidity in %
4
REMKO SLE 20