DanVex DEH-290h Panduan Pengoperasian - Halaman 6

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A misted window glass in winter or a misted bottle with a cold drink are common

examples of condensing.

The higher the relative air humidity the higher is the dew-point temperature,

and thus it is easier to fall below the dew-point temperature.

Drying materials

Building materials/structures can absorb considerable amounts of water, e.g. bricks can

absorb 90-190 l/m3, heavy concrete can absorb 140-190 l/m3, sand-lime bricks can absorb

180-270 l/m3. Wet materials such as masonry are dried as follows:

The moisture contained in the material moves from within the material



to its surface

Evaporation takes place on the surface = water vapor is absorbed by



the ambient air

The air enriched with water vapor continuously circulates through the



dehumidifier. It is dehumidified and leaves the unit being slightly heated

to absorb the moisture again

In this way, the moisture content in the material is continuously reduced



and the material dries

The produced condensate is collected in the unit and discharged

The air flow is cooled on the way through /via the evaporator-condenser

till its temperature is below the dew point. Water vapor condenses, it is

collected in a condensate trap and discharged.

Heat of condensation

The energy transferred from the condenser to the air consists of:

The heat earlier transferred from the evaporator



Real electrical power.



The heat of condensation released through the condensation of water vapor.

Evaporator

Condenser

Air direction

Humidity

time

Air

temperature