Remko ETF 360 User Manual download pdf (Page 5)

5

Condensation of water

vapour

Since the maximum water vapour

volume increases when the air is

heated, but the contained water

vapour volume remains the same,

this results in a reduction of the

relative humidity.

In contrast, when the air is

cooled, the capacity to absorb the

maximum water vapour volume

reduces, the water vapour volume

contained in the air remains the

same and the relative humidity

increases.

If the temperature falls further, the

capacity to absorb the maximum

water vapour volume is reduced

until it is equal to the contained

water vapour volume.

This temperature is called dew-

point temperature. When the air

is cooled below the dew-point

temperature, the contained water

vapour volume is larger than the

maximum possible water vapour

volume.

Water vapour is discharged.

This condenses to water, moisture

is removed from the air.

Examples of condensing are misted

windows in winter or misting of a

cold drinks bottle.

The higher the relative humidity,

the higher the dew-point

temperature, which is easier to fall

below.

Building materials or structures

can absorb substantial amounts

of water, e.g. bricks 90-190 l/

m³, heavy concrete 140-190 l/m³,

lime-sand bricks 180-270 l/m³.

The drying out of moist materials,

e.g. masonry, takes place as

follows:

■

The contained moisture moves

from the inside of

the material to its

surface

■

Evaporation takes

place on the

surface = transition as water

vapour to the ambient air

■

The air enriched with

water vapour continuously

circulates through the REMKO

dehumidiﬁ er. It is dehumidiﬁ ed

and leaves the unit at a slightly

higher temperature to absorb

water vapour from anew

■

In this way, the moisture

contained in the material is

gradually reduced

The material dries!

The produced condensation

is collected in the unit and

discharged.

Drying materials

Verdampfer Kondensator

°C

30

25

20

15

% r.F.

100

90

80

70

60

50

40

30

20

10

+

+

-

Lufttemperatur

Luftfeuchte

Verlauf

Luftrichtung

The air ﬂ ow is cooled on its way through or via the evaporator to

below the dew-point. The water vapour condenses and is collected

in a collection tray and discharged.

Temp. Water vapour content in g/m

3

at a humidity of

°C 40% 60% 80% 100%

-5 1.3 1.9 2.6 3.3

+10 3.8 5.6 7.5 9.4

+15 5.1 7.7 10.2 12.8

+20 6.9 10.4 13.8 17.3

+25 9.2 13.8 18.4 23.0

+30 12.9 18.2 24.3 30.3

1 2 3 4 5 6 7 8 9 10 ... 19 20

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