More than 700 million people around the world suffer from severe water scarcity. Desalination is one of the most promising solution to contrast this problem. In particular, passive desalination is considered the most suitable expedient to mitigate water scarcity where this problem is striking the most, namely in remote areas. These passive technologies, although historically considered energy-intensive, are particularly appealing when powered by renewable sources such as solar energy. The goal of this thesis is then to develop a scaled-up version of the innovative passive solar high-yield seawater desalination technology, developed at Politecnico di Torino. The latter is able to operate without the use of any active components and it is based on a smart combination of low-cost materials.