Atmospheric water harvesting

http://www.eolewater.com/ Eole Water is the pioneer in the field of water making systems using air as a source of water. The company has invented in particular the first wind turbine able to create drinking water from condensed air. https://www.youtube.com/watch?v=ZYaPxbNoO_U The SYSTEM OF ATMOSPHERIC HUMIDITY CONDENSATION, registered under Patent number INPI 200100101562, was conceived with the humanitarian aim to provide drinking water to communities that lack the same, wherever is need it and it is available to any public or private entity willing to develop it.

http://www.warkawater.org/design,  https://www.youtube.com/watch?v=VhfAmNosv7c

pyramid evaporation
https://www.youtube.com/watch?v=dIPSqszu8qg

waterseer
https://www.youtube.com/watch?v=5m7cpxxtPTk    http://www.destinationtips.com WIND-POWERED DEVICE WORKS 24/7 TO PRODUCE CLEAN DRINKING WATER OUT OF THIN AIR WATERSEER COULD BE THE ANSWER TO WATER SCARCITY AROUND THE WORLD RESEARCHERS AT VICI-LABS, IN COLLABORATION WITH UC BERKELEY AND THE NATIONAL PEACE CORPS ASSOCIATION (NPCA), DEVELOPED A DEVICE THAT CONDENSATES PURE WATER FROM THE AIR WITHOUT THE USE OF POWER OR CHEMICALS. THE WATERSEER IS AN INEXPENSIVE, LOW-TECH AND LOW-MAINTENANCE CONDENSER THAT IS EXPECTED TO CREATE WATER SELF-SUFFICIENCY IN COMMUNITIES AROUND THE WORLD. IT USES A RELATIVELY SIMPLE MECHANISM, WITH AN ABOVE-GROUND TURBINE THAT SPINS IN THE BREEZE, TURNING INTERNAL FAN-BLADES AND DIRECTING AIR DOWN INTO A CONDENSATION CHAMBER INSTALLED 1.8M (6 FT) UNDERGROUND. THERE, THE METAL SIDES OF THE CHAMBER ARE COOLED BY SURROUNDING SOIL AND THESE IN TURN COOL DOWN THE WARM AIR INSIDE THE CHAMBER. THIS CAUSES THE WATER VAPOR TO CONDENSATE INTO LIQUID WATER FLOWING DOWN INTO THE RESERVOIR. WITH THE HELP OF A PUMP, THE POTABLE WATER CAN BE EASILY EXTRACTED AND COLLECTED. DUE TO THE FACT THAT THE SIDES OF THE UNDERGROUND CHAMBER ARE ALWAYS COOLER THAN THE AIR, WATERSEER CAN COLLECT WATER DURING DAY AND NIGHT, EVEN WITH NO WIND. UNDER OPTIMAL CONDITIONS, IT IS ESTIMATED THAT IT CAN YIELD UP TO 42L (11 GALLONS) OF DRINKING WATER PER DAY. A SIMPLE, SUSTAINABLE AND SCALABLE WAY OF PROVIDING WATER, AT A COST OF JUST $134.