"Each collection system consists of three six-meter-high (twenty feet) wooden poles, mounted nine meters (thirty feet) apart. Steel cables stretch horizontally between the poles and anchor the structure. A double layer of 30 percent shade cloth is then draped over the cables and fixed to the poles on each side. This forms a fog collection screen of about 70 square meters (750 square feet), with a gutter attached to its lower end. The technology behind fog collection is extremely simple, during foggy conditions, the tiny fog particles are blown against the screen and deposited on it. As the drops become larger, they trickle downwards and drop into the gutter. From there, the water is channeled through a filter to a pipe that leads to a water collection tank."Due to the simplicity of construction and also the technology behind the concept, this seems to be a solution that would work very well in areas with little access to suitable or existing infrastructure.
A similar project by Imke Hoehler called Dropnet also uses the same technology as the UNISA but has redesigned the system to be smaller and more portable. Whereas the UNISA project is a built-in-place installation, the Dropnet can function as a re-deployable system.
UNISA project seen on NatGeo News Watch and The University of South Africa.
Dropnet project found on Designboom.