Global warming, together with the rapid human population growth, has led the world into increasing water scarcity where there is not enough water to meet all demands, including that needed for ecosystems to function effectively.
On one hand, the existence of fresh water decreases each year: Arid areas are slowly expanding in a process called desertification; existing water sources are being polluted due to industrial waste and fertilization material penetrating the drinking water.
On the other hand, the demand for fresh water increases due to the population growth.
The technology for fresh water extraction is developing rapidly these days, allowing humans to use the water sources available in the planet:
• Filtration- to use brackish water;
• Reverse osmosis (RO)- to use sea water;
• Atmospheric water generators (AWG) that use air moisture as a non-depleting water source
In this lecture, we’ll overview the physics behind the AWG machines.