[HN Gopher] A floating solar-powered device produces clean water... ___________________________________________________________________ A floating solar-powered device produces clean water and clean fuel Author : geox Score : 19 points Date : 2023-11-14 21:12 UTC (2 days ago) (HTM) web link (www.cam.ac.uk) (TXT) w3m dump (www.cam.ac.uk) | account-5 wrote: | > The device ... could be useful in resource-limited or off-grid | environments, since it works with any open water source and does | not require any outside power. | | Or in a country where the gov privatised the water companies and | then these companies started dumping sewage in all the waterways | instead of doing there jobs, like in England. | fbdab103 wrote: | >...which produces green fuel with a solar-to-hydrogen efficiency | of 0.13 +- 0.03% and 0.95 kg m-2 h-1 of water vapour as the feed | for the PC and collectable purified water. This integrated system | maintains operational stability in seawater and other aqueous | waste streams for over 154 h due to the isolation of the PC from | contaminants in the liquid feedstock. | | So, wildly inefficient, but if the device is cheap enough to | produce, could still be worthwhile where there are no other | options. I know there is some interest in floating solar panels, | which would probably be significantly more efficient (can | centralize the hydrogen/H2O production at a large scale | facility), but that struck me as introducing a host of | engineering problems vs finding some unused land. ___________________________________________________________________ (page generated 2023-11-16 23:00 UTC)