This is just as exciting as when it came up in 2020.<p>One of the nice features of this system is that, overnight, the wick self-cleans, diffusing accumulated salt back to the sea water.<p>Another way to recycle the heat of condensation, in a bigger system not relying on capillary action, would be to circulate incoming brine in the condenser on its way to the evaporator, pre-warming it while cooling the vapor; and run outgoing brine through a heat exchanger to further warm incoming brine.<p>A key observation in design of low-cost desalination is that there is no need to minimize the amount of brine circulating in the system. So long as heat collected in the brine is not wasted, you are better off circulating more brine. The less you concentrate the brine, the easier it is to get water out.