Making water from air

Atmospheric water generation, AWG is a new technology that can provide high quality drinking water by extracting water from the air by cooling the air and thus condensing water vapor. The rate at which water can be produced depends on relative humidity and ambient air temperature and size of the compressor. Atmospheric water generators become more effective as relative humidity and air temperature increase. As a rule of thumb, cooling condensation atmospheric water generators do not work efficiently when the temperature falls below 18.3°C (65°F) or the relative humidity drops below 30%. This means they are relatively inefficient when located inside air-conditioned offices. The cost-effectiveness of an AWG depends on the capacity of the machine, local humidity and temperature conditions and the cost to power the unit.  AWGs are useful where pure drinking water is difficult or impossible to obtain, because there is almost always a small amount of water in the air that can be extracted.Research has also developed AWG technologies to produce useful yields of water at a reduced (but non-zero) energy cost.AWGs at this time can now be used as a sole source of water for commercial and industrial applications, as well as residential secondary buildings.