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Electric hand dryer

Electric hand dryer hot air or forced air?

Which electric hands to choose

The choice of an electric hand dryer has so far become more complex with the arrival of electric hand dryers with forced air for 2 years.
The range of electric hand dryer is divided into two main categories:
- The electric hot air hand dryer
- The electric hand dryer with forced air

Electric hot air hand dryer

The hot air electric hand dryer is characterized by hand drying based on the production of hot air blown at speeds ranging from 80 to 110 km / h.
This electric hand dryer is the most widespread and the most economical to purchase.
There are push button models or cell models (automatic) to prevent contact between the user and the electric hand dryer.

Electric hand dryer with forced air

The pulsed air hand dryer is characterized by hand drying based on the speed of the air. It is this air velocity that blows the water present on the hands towards the bottom of the device and thus dries hands.
The water is usually collected at the bottom of the device in a tank that must be emptied regularly. Indeed, only certain models combine this air speed with a light heating. There is therefore not as in the case of electric hand dryer hot air "evaporation" but rather "evacuation". This explains a very fast drying time of the order of 10 seconds.
The cost in use is low but the investment remains heavy with prices 5 to 8 times higher than a hot air hand dryer.

Comparative hygiene

Regarding the hygienic and bacteriological aspect, although the pulsed air electric hand dryer represents a slight improvement over the hot air electric hand dryer, the use of disposable paper hand towel remains the reference if your criterion is a impeccable hygiene. The comparative survey is visible here .

Electric hand dryer what standard?

An electric hand dryer is characterized by several standard features.
We distinguish at first:

IP index

The IP index has two numbers: the first represents the level of protection of the hand dryer against solid bodies. The second digit does level of protection against liquid elements.How to read the IP protection rating.
First number: protection against solid bodies
IP0X - no protection
IP1X -protected against solid bodies> to 50 mm (ex.contact of the hand)
IP2X -protected against solid bodies> 12.5 mm (ex.doigt of the hand)
IP3X -protected against solid bodies> 2.5 mm (eg tools, screws)
IP4X -protected against solid bodies> to 1 mm (eg small tools, wires)
IP5X -protected against dust (no harmful deposit)
IP6X - completely dustproof
Second digit: protection against liquid bodies
IPX0 - no protection
IPX1 -protected against vertical drops of water drops
IPX2 -protected against drops of water up to 15 ° from the vertical
IPX3 -protected against drops of water up to 60 ° from the vertical
IPX4 -protected against projections from all directions
IPX5 -protected against jets of water from all directions (water lance)
IPX6 - completely protected against projections (similar to sea packs)
IPX7 -protected against the effects of immersion
IPX8 -protected against the effects of prolonged immersion

Insulation class of electric hand dryer

The device is also classified by a class of insulation obligatorily taken up by a pictogram.
Class I: Class I devices must be earthed.
Class II: Class II appliances have double electrical insulation and do not require a ground connection. Only these appliances can be installed in bathrooms.
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