Shown at this year’s Tuttobene exhibition in Milan, Gross’ fog harvester (above) has a 2-metre screen mesh that can capture up to 10 litres of fog droplets from the air in 24 hours.
His dew collector, pictured above, weighs a mere 400 grams and has a special laminate foil that pulls dew drops to it, allowing it to collect up to 1.5 liters of fresh water per night. Because extreme conditions can harm the laminate foil, Gross has also designed an additional sensor system that can react to atmospheric changes by opening or closing the apparatus accordingly. Both are very refreshing and low-tech design responses, providing water to people who need it most.
Related Links on Water Collecting
How to Green Your Water
Fog-harvesting for water - clouds on tap (Science in Africa)
Chilean Engineers Find Water for Desert by Harvesting Fog in Nets (NYT)
Other Interesting Entries in the Evolo Competition (see Fog Tower entry)
Other Cool Rain Harvesting Designs
WATAIR: Turning Air Into Water (Inhabitat)