Quote:
Originally Posted by fxzeu
There's hardly any water in the atmosphere.
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Water is the main greenhouse gas.
(Water vapour retains 66% of all the heat trapped by all the greenhouse gasses-
-Tim Flannery)
Clouds are made from water.
(People are mainly water)
From wiki:-
Quote:
An Atmospheric water generator (AWG) is a machine that produces pure drinking water from the humidity of the surrounding air. An AWG operates in a manner very similar to that of a refrigerated dehumidifier: air is passed through a cooled coil, causing water to condense. The amount of water that can be produced depends on the humidity, the volume of air passing through the coils, and the size of the machine.
The device is used in situations where pure drinking water is otherwise difficult to obtain or where the population demands are greater than the water tables can sustain or the water table has been or is contaminated, or for natural disaster relief.
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The XDOBS Water extraction from air devices
A2WH (Air to Water Harvest Technology). Water Extraction from Air converts humidity in the air into high quality water. A2WH Works in Deserts and even better in humid areas.
Quote:
MEDICINE INVENTIONS
E-MAIL
The Rainmaker
The science-fiction writer Arthur C. Clarke once wrote that "any sufficiently advanced technology is indistinguishable from magic." Case in point: this water-harvesting machine, which can pull up to 500 gal. of drinkable water per day out of thin air. Its precise workings aren't public, but they use a chemical process similar to the one that causes salt to absorb moisture from the air (and clump up your saltshaker). The water machine isn't particularly portable--it's 20 ft. long--but it will be a godsend for disaster victims or troops in desert combat.
Inventor: Aqua Sciences
Availability: Now; about $300,000
To learn more visit aquasciences.com
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TIME Best Inventions 2006
Quote:
Robert Cohen, Michael Rubner, and colleagues started by assembling a nano-structured film made of alternating layers of positively and negatively charged polymers and silica nanoparticles. The film's structure and a coating of waxy fluorinated silane cause water to bead on it, forming near-perfect spheres that easily roll off. To add the superhydrophilic regions (to which water droplets cling), the researchers applied a naturally hydrophilic polymer to selected areas.
In dry regions of the world, without easy access to clean water, such a material could be used for collecting water. In this application, the hydrophilic areas of the material would attract moisture in the air, collecting water drops that accumulate, until they spill over into the hydrophobic regions and roll into a collecting channel. Currently, in countries with limited access to clean water, the inhabitants typically use large polypropylene fiber meshes to harvest water from fog.
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Technology Review: Super Plastic Both Attracts and Repels Water
