Not an expert, but from what I understand looking at the paper, the sun is what drives ocean mixing. Without ocean mixing, this method would eventually fully ex

Not an expert, but from what I understand looking at the paper, the sun is what drives ocean mixing. Without ocean mixing, this method would eventually fully extract all the water out of the ocean water resulting in fresh water oceans on top of a floor of precipitated salt. Once that happened, the osmotic pressure would be exhausted and the system would stop working.