I looked into this space. The major problem with the evaporative approach is that takes way too much energy. Reverse osmosis is ~50x more efficient. The best

I looked into this space. The major problem with the evaporative approach is that takes way too much energy. Reverse osmosis is ~50x more efficient. The best way to get fresh water is to use solar panels to generate electricity and use it for reverse osmosis. - 540kcal/liter Evaporate - ~10kcal/liter RO