It all comes down to condensation – here is the science bit.
For condensation to happen, hot humid air needs to be cooled down. The Fontus has a small cooler which is installed in the centre and is called the Peltier Element. The cooler is divided into two:
When powered by electricity, the upper side cools down and the bottom side gets hot. The more you cool the hot side down, the colder the upper side will get. Consequently, these two sides are separated and isolated from each other.
The air enters the bottom chamber at a high speed when moving forward with the bike and cools the hot side down. Moreover, when the air enters the upper chamber it is stopped by little walls perforated non-linearly, reducing its speed in order to give the air the needed time to lose its water molecules.
The condensing structure represents the largest surface in the smallest space possible. This provides a large surface for condensation to happen. Droplets then flow through a pipe into a bottle. The bottle can then be turned to a vertical position and loosened. Every kind of PET 0,5l bottle fits.
Experiments have established that it can harvest around 0,5 liters of water in just one hour, depending on levels of humidity. Now that is impressive.
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