DeLonghi dr-155 User Manual

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DeLonghi dr-155 User Manual Manual pdf 3 page image

320°C5 l30°C5 lENGLISHBrief notes on humidityAir naturally contains a given quantity of water in the form of water vapour which determines its humidity level.The capacity of air to hold water vapour is, however, limited and depends on its temperature: the higher thetemperature, the greater the quantity of water vapour which can be held in the air. The absolute humidity (A.H.)value indicates the quantity of water contained in 1 kg of air and is expressed in grammes. The relativehumidity (R.H.) value is the percentage ratio of the quantity of water contained in 1 kg of air and the maximumquantity which can be contained under the same environmental conditions.In other words, we can imagine the air in a room at a certain temperature as a container with a given capacity,let us say 10 litres, for example. Supposing we fill it half way with water, we would then say that the containeris 50% full (relative humidity) and that 5 litres of water are contained in it (absolute humidity). When thecontainer is completely full, we would describe it as “saturated” or say that we have 100% relative humidity.Increasing the temperature is like increasing the capacity of the container. When the air is at 20˚C it is thereforeas if we had a 10 litre container, whereas when the air is at 30˚C it is as if we had a 20 litre container.There are consequently two ways of reducing the relative humidity:- removing water- raising the temperature of the airThe new dehumidifier makes it possible to carry out both operations simultaneously, bringing you exceptionaldehumidifying speed and power.20°C5 l20°C2,5 lR.H. = 25%A.H. = 2.5 l2.5 l waterremovedR.H. = 50%A.H. = 5 lR.H. = 50%A.H. = 5 lR.H. = 25%A.H. = 5 lno water removedExperts have established that optimal atmospheric conditions, both for our physical health and thepreservation of furniture and other items, vary between 45% and 60% relative humidity. It is thereforeadvisable to keep rooms within these values.