WATER HARVEST

Device aims to harvest water from air

A wind-driven device could provide an unlimited water supply by harvesting water from the air, says its Australian inventor.
However critics are asking if it is too good to be true.

Dr Max Whisson, a retired medical specialist turned inventor, says he has designed a highly efficient wind turbine that can run a refrigeration system to cool air and condense moisture from it.
"The wind carries in the water and [provides] the power required to separate that water from the wind," Dr Whisson said, who is based in Perth.
He says there is a huge amount of water in the atmosphere that is replaced every few hours.
This means the whole world could just use water from the air without disrupting the environment.
Whisson says the system would even harvest significant amounts of water in areas with low humidity.

[The inventor says a four-metre square device could extract an average 7,500 litres of water a day.]