DanVex DEH-290h Bedieningshandleiding - Pagina 4

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The below diagram shows an example of metal corrosion rate at different air humidity levels.

As you can see the rate of corrosion is insignificant at the relative humidity below 50%, and it

can be disregarded at the relative humidity below 40%. But at the relative humidity above

60% the rate of corrosion increases considerably. This moisture damage example applies

also to many other materials, such as powders, packaging, wood, electric equipment or elec-

tronic devices.

There are two different ways of buildings drying out:

1. By heating with further air exchange:

The ambient air is heated to absorb the moisture and then it is discharged to the atmosphere.

However the total energy output is lost during the moist air discharging to the atmosphere.

2. By the air dehumidification:

The moist air in an enclosed room is continuously dehumidified by the condensation principle.

In terms of energy consumption the air dehumidification has one essential advantage:

The energy expenditure requirements are limited by the air volume in the existing room only.

The mechanical heat released during the dehumidification process slightly increases the air

temperature in the room.

When properly used the dehumidifier consumes about 25% of the energy that would be

needed for the „heating and ventilation".

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Air relative humidity, %

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