Energy issues today tend to get the main attention of the media. However,another big challenge we'll need to collectively deal with soon is the problem of potable water. An Israeli company hopes to help nations with less fresh water resources get it inexpensively. They are developing a technology to turn humidity in the air into drinkable fluids. EWA, which means Extraction of Water from Air, uses a heat-based absorption system and a special energy saving condenser to suck moisture from the atmosphere and into reservoirs cleanly and efficiently.
The technology works like this: First, the desiccant, made of silica-based gel granules, absorbs the air's humidity using an exothermic (heat releasing) process. Then the water is drawn out of the gel and condensated. It's not the first water from air generator out there, but its heat recovery techniques have vastly reduced the cost for producing water with this method. The end product is cheaper to operate than other filtration systems, such as desalination, also developed by a number of Israeli companies.
All over the world water is occupying the attention of the general public and inventive companies. South Koreans have turned a lrge bridge into a wonderful fountain that can put NYC Waterfalls to shame as shown below.
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