Due to the water shortage and contamination of our water, this could be our future.
Fog is moisture. And in some places in the world, it’s the only kind of moisture. This is true in the Atacama Desert – the world’s driest desert – which runs along the west coast of South America through Chile and Peru. In the Atacama it never rains.
Water is an essential resource to survive, yet there are over a billion people that don’t have assess to reliable drinking water.
Water is often scarce in communities located at high altitudes. Fog collection technology can provide a solution.
For many years Eritrea has been harvesting fresh water from fog. It has helped provide drinking water for the community in Nepal, as well as in Yemen, Morocco, Chili and Ethiopia.
Fog collectors are vertical panels of polyethylene mesh that collects water from fog and channels it to a water storage tank. The sun naturally desalinates the water.
A family of coated meshes with a directed stream of fog droplets to simulate a natural foggy environment and demonstrate a five-fold enhancement in the fog-collecting efficiency of a conventional polyolefin mesh. The design rules developed in this work can be applied to select a mesh surface with optimal topography and wetting characteristics to harvest enhanced water fluxes over a wide range of natural convected fog environments.
The system is placed on hill tops in areas with persistent fog and heavy winds.
A single 4m long x 10m high net can collect up tp 250L of water a day, which is enough for a family.
It's efficient. It's resilient. And it's a hell of a lot more economical than paying truck drivers to bring water each day.