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The ability of the airs to contain water depends on the temperature of the air. Cold air can contain less water than hot air.
This is the reason why indoor air becomes dry in the winter. For example: air with a temperature of 0 degrees and with a humidity of 50% RH, heat up till 20 degrees, after this the humidity will be 13 % RH. In northern Scandinavia it is not unusual, that the humidity is under 10 % RH in the winter. A humidity that low can cause a lot of inconveniences, such as static electricity and floating dust that arises because cleaning becomes more difficult when the dust becomes static. Inconveniences like dry mucous membranes and nose-bleeding occurs often.
Those inconveniences can be rectified by maintaining a humidity of 30-50% RH. With equipment from Unifog Denmark ApS it is possible to control the humidity on the exact wanted level. |
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