We write December 2015, with the new year around the corner. Yet, still 780 million people around the world have no access to clean and safe drinking water. That is 1 out of 9! Since many communities life at or near the shore, the vast amount of seawater nearby plead to be turned into the source of life. Until now various machines have been proposed to take the salt out of seawater. This desalination process happens to be expensive, both money and energy wise.
The best solutions to difficult problems are often found in nature. Same goes for the Rain Maker, the desalination machine that mimics the natural water cycle. It heats seawater until it vaporises. The water vapour is taken into another compartment to be distilled. Then the steam is cooled down and turns into water again. Via a smart design, most of the heat is recuperated.
No membranes or filters are used, making the device able to run on its own for months without human intervention. A machine the size of a small car can make more than 3500 litres of water an hour.
By building small units that can be mass produced, the price is reduced enormously. Depending on the specific needs, more or less Rain Makers can be combined. This makes a desalination machine finally cost effective. Current massive plants are designed case by case and just cost too much money. The builders of Rain Maker even propose to build a ship full of their desalinators. When a coastal area faces a water crisis, the ship rushes to the spot and can start producing clean drinking water straight away and pump it to the shore.
Showcased in Billions in Change documentary