Image source: blog.silive.com
A report on CNN today makes reference to a small Canadian company, Element Four, that has developed a machine for producing water by extracting moisture from the air. This principle is not new, and a number of companies have been conducting R & D in this area. The ‘WaterMill’ produced by Element Four is relatively low cost — currently USD1300 — and it may come down to around USD300. Apparently, the WaterMill mounts to the exterior of your house and can produce up to 12 litres a day. On the downside, there has to be relative humidity greater than 35% for this to work. This is good news for people living in Brisbane (where the humidity does not drop below 60% even in the drier months) but the device is of more limited use in places like Cairo where relative humidity is above 35% far less frequently.