Water to Water

   WATER TO WATER – WW – 90K

   A wind driven product that produces clean water from salty, brackish or polluted water, with no power or chemicals required. The unit provides up to 90,000 liters per day under favorable conditions. The output will also depend on the size and input capacity of the chosen location and installation

     In many regions where briny or brackish water is found, this type of wind turbine will provide an answer to the problem. Beside the ability to make clean drinking water, its use of sustainable energy ensures that the environment will not become more overburdened and, important for the user, that energy costs will be independent of the supply-and-demand whims of energy markets.

Operating Principals

—Here, water is used as a basis raw material instead of air. The total output of the turbine is much bigger, resulting in a lower price per cubic metre of potable water.

—Heat is produced from the power unit by the use of a heat pump. This heat is used in a “flash evaporation” process.

—Vapour produced from heating the water then passes through a porous hydrophobic (water repelling) membrane.

—The WW unit’s membrane only allows water vapour to diffuse through, unlike Reverse Osmosis where water containing dissolved salts and/or other solids pass through the membrane. The pores in the membrane are also larger than the pores in Reverse Osmosis membranes and there is less pressure and energy required for the vapour to pass through the membrane.

—The driving force of this technology is actually the partial pressure difference between each side of the membrane pores. The efficiency of the WW MEMD system makes it possible to desalinate large quantities of water with very little energy.

—MEMD is a relatively new method of desalination and renewable energy is well suited to serve as the input source of energy. Recent developments in membrane technology have created significant interest in marrying renewable energy with MEMD.

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