When low dewpoint air is present, it is impossible for ice to form on surfaces.
The air in contact with the ice will have a dew point lower than the surface temperature of the heat exchanger.
No water condenses on cold surfaces if the dew point of the air in contact with it is below that of the surface.
Iron and steel will not corrode if the relative humidity of the air in the environment is at a level below 50% RH
Products such as tablets, dry food, powders, sweets, bakery products are highly hygroscopic. To manage to maintain their high quality should be ensured that from the beginning of the manufacturing process up to the sale to the customer, the product is in contact only with the air of low relative humidity.
If the air has a relative humidity below 50%, most hygroscopic materials do not absorb excess moisture. But still there are many products that require a relative humidity below 15%. What then?
When removing moisture from rooms, new houses, damp buildings, the most effective method of drying is drying sorption. Air heating only takes moisture from one portion of the building to another. Heating air in connection with ventilation is a very expensive method. When using sorption- drying the moisture is removed from the building quickly and cheaply.
Mould and Fungi
If the air is maintained at relative humidity below 70%, mold and fungus does not arise ceases to grow.
By bacteria can live and reproduce in need of moisture. It is moisture in hygroscopic materials are a breeding ground for bacteria. So our goal should be to maintain relative humidity below 50%. With such low moisture bacterial growth is inhibited.
Unpleasant odours can be reduced if the relative humidity is less than 50%.
Sensitivity product temperature
Drying sorption is particularly appropriate if dried products are sensitive to high temperatures. The use of desiccants makes it possible to obtain a very low relative humidity products.
Relative humidity significantly affect the mode of action of electrical and electronic products.