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celewign posted:I was flying on a plane, and a medical doctor sitting next to me said he was a proponent of wind turbines because they could be used to create strong winds that would push away the clouds. Anyone know what's up with Finland? Seems like some nuclear generation is down and coal had to kick in. I couldn't easily find any information in English at least.  E: oops, forgot I cuto ff the legend at the top. Green is nuclear, brown is coal, light blue is wind and dark blue is hydro mobby_6kl fucked around with this message at 20:55 on Sep 5, 2023 |
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Sep 4, 2023 14:44
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It's taken a little while, but I see the answer is "not fast enough." Re: Finland, heavens I wish they'd choose another color scheme, my eyes
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Sep 4, 2023 14:51
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celewign posted:I was flying on a plane, and a medical doctor sitting next to me said he was a proponent of wind turbines because they could be used to create strong winds that would push away the clouds. https://www.youtube.com/watch?v=PmDVHs-juPo&t=3s
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Sep 4, 2023 15:44
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mobby_6kl posted:At least they're not causing cancer so there's that. Refueling outage? It'd be early in the year for one here, but I don't know what the seasonality is like in Scandinavia. Jows fucked around with this message at 16:03 on Sep 4, 2023 |
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Sep 4, 2023 16:01
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celewign posted:I was flying on a plane, and a medical doctor sitting next to me said he was a proponent of wind turbines because they could be used to create strong winds that would push away the clouds. Fun fact Wind machines are commonly used on farms and orchards to prevent frost. https://orchard-rite.com/wind-machines#info They aren't capable of pushing clouds away, but they're still cool. 
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Sep 4, 2023 16:08
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mobby_6kl posted:At least they're not causing cancer so there's that. One nuke plant going through maintenance, other nuke plant had a problem and needed to be taken off the grid. Also, maintenance work in Sweden transmit grid so imports had to be scaled down. In addition it happened during a period of low wind. So basically multiple shits hitting the fan simultaneously.
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Sep 4, 2023 16:27
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a new way to get lithium .... https://engineering.princeton.edu/n...0and%20lithium. TheMuffinMan fucked around with this message at 02:42 on Sep 10, 2023 |
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Sep 10, 2023 02:39
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Im ok with it as long as we can still use child slaves
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Sep 10, 2023 04:03
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TheMuffinMan posted:a new way to get lithium .... That's pretty cool how it mimics trees. Won't matter though unless they can scale it, of course.
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Sep 10, 2023 04:46
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Speaking of lithium, the world's largest deposit has been discovered within the US along the Nevada-Oregon border https://www.chemistryworld.com/news/lithium-discovery-in-us-volcano-could-be-biggest-deposit-ever-found/4018032.article
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Sep 10, 2023 04:53
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how is thacker pass being "discovered"? people have been trading $LAC off of its developments for years now here's a year old guardian video about the protests to it https://www.youtube.com/watch?v=sv9iHH7g6xk the company even has a webpage for it: https://www.lithiumamericas.com/usa/thacker-pass/ its wiki page was created a decade ago, though to be fair its really in 2020 when development got going: https://en.wikipedia.org/wiki/Thacker_Pass_Lithium_Mine MightyBigMinus fucked around with this message at 21:58 on Sep 10, 2023 |
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Sep 10, 2023 18:11
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Dameius posted:That's pretty cool how it mimics trees. Won't matter though unless they can scale it, of course. Article say they already scaled it up once and are working on a second generation model, and the components are cheap and the process naturally separates the sodium and lithium salts without using additional chemicals. quote:In addition to concentrating the salts, the technique causes lithium and sodium to crystallize at distinct locations along the string due to their different physical properties. Sodium, with low solubility, crystallizes on the lower part of the string, while the highly soluble lithium salts crystallize near the top. The natural separation allowed the team to collect lithium and sodium individually, a feat that typically requires the use of additional chemicals. quote:Conventional brine extraction involves building a series of huge evaporation ponds to concentrate lithium from salt flats, salty lakes or groundwater aquifers. The process can take anywhere from several months to a few years. The operations are only commercially viable in a handful of locations around the world that have sufficiently high starting lithium concentrations, an abundance of available land, and an arid climate to maximize evaporation. For instance, there is only one active brine-based lithium extraction operation in the United States, located in Nevada and covering over seven square miles.
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Sep 11, 2023 16:02
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It seems like that would also be faster, easier desalination?
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Sep 13, 2023 04:20
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Xand_Man posted:It seems like that would also be faster, easier desalination? This is removing some specific salts, but the water coming out the ‘top’ probably has plenty of salts left. I’d guess it could be adapted, but something tells me it will run into diminishing returns and end up be similar in cost (price, energy, space, etc) as other solutions.
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Sep 13, 2023 06:38
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Xand_Man posted:It seems like that would also be faster, easier desalination? The water going up the wicks is evaporated off, the remaining solution in the feed pond (that the wicks are dipped into) would slightly increase in salinity (because some evaporation would still happen off the surface).
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Sep 13, 2023 09:00
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And the evaporate is troublesome to collect and use as a water source in that context I would guess.
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Sep 13, 2023 09:11
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Zudgemud posted:And the evaporate is troublesome to collect and use as a water source in that context I would guess. Yes, you have to seal it and pump out the collected vapor. To make it more efficient, you could make it a vacuum and you have just invented vacuum desalination (Israel used to be world leaders in it), where you lower the pressure above your feed solution so that boiling point of water is reduced to (near) ambient temperature (and then condense the vapor at ambient pressure). For desal, reverse osmosis has been the market leader for 20 years or more (wouldn't surprise me the first step of these evap ponds is RO'ing out a cut of good quality water).
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Sep 13, 2023 09:35
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https://newatlas.com/energy/touchwind-floating-wind-turbine/ a lower cost wind turbine
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Sep 17, 2023 08:03
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TheMuffinMan posted:https://newatlas.com/energy/touchwind-floating-wind-turbine/ It seems cool - a good use of physics principles rather than sheer engineering.
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Sep 17, 2023 12:22
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https://interestingengineering.com/innovation/new-tape-nuclear-fusion-reactors
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Sep 18, 2023 22:18
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Those YBCO magnets are really impressive but there haven't really been any actual news about those in the last two years. It will be a while until they get the reactor together.
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Sep 19, 2023 16:17
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It'll be neat to see how it works in practice and get some data as to how much closer to the engineering net positive energy output we get.
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Sep 19, 2023 16:35
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If the production capacity for YBCO tape is really increasing exponentially year-on-year, it's going to be incredibly positive for fusion. And maybe one of those "this changes everything" technologies. A high magnetic field of 13 Tesla means reaching a plasma density great enough for a self-sustaining fusion reaction. Then you can finally get to work on researching, in power-plant conditions, what could be the real showstoppers for fusion: turbulence, instabilities, neutrons and impurities.
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Sep 19, 2023 18:32
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And yeah the big thing about those is we just don't even have the facilities to really experiment or develop or research the quality assurance and material sciences for those materials, and not enough of any kind of funding yet. If fusion research gets to the point where THAT is the show stopper I think we'll see more solutions be considered.
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Sep 19, 2023 18:40
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So the French were drilling the ground and came acros a shitload of hydrogen it seems. https://arstechnica.com/science/2023/09/french-drillers-may-have-stumbled-upon-a-mammoth-hydrogen-deposit/?comments=1&comments-page=1 quote:While the device did detect almost pure methane (99 percent) at a depth of 650 meters, probing further down, the borehole resulted in an unexpected and surprising discovery: hydrogen in high concentration. “At 1,100 meters, the concentration of dissolved hydrogen is 14 percent. At 3,000 meters, the estimated concentration could be as high as 90 percent,” Jacques Pironon, director of research at GeoRessources lab at the Université de Lorraine, said. However, you'll note there's also a shitload methane there and they're extrapolating that it could be 90% hydrogen if they go deeper.
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Sep 20, 2023 21:40
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I thought with new catalysts/enzymes getting hydrogen from water is very low cost
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Sep 20, 2023 21:48
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TheMuffinMan posted:I thought with new catalysts/enzymes getting hydrogen from water is very low cost Still far more costly than just getting it out of the ground for pretty much free, if you have a viable reservoir. Obviously, you wont get to produce hydrogen from water at an actual energy win, so the energy has to come from somewhere else. Basically, ground hydrogen can be fuel, while produced hydrogen can only be a battery.
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Sep 20, 2023 21:58
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cant cook creole bream posted:Still far more costly than just getting it out of the ground for pretty much free, if you have a viable reservoir. plenty of energy to come from the sun though right via solar panels
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Sep 20, 2023 22:01
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TheMuffinMan posted:plenty of energy to come from the sun though right via solar panels If you think about it, isn't the sun just a really big battery that's constantly discharging? 
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Sep 20, 2023 22:05
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Deuce posted:If you think about it, isn't the sun just a really big battery that's constantly discharging? most of the sun is plasma
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Sep 20, 2023 22:08
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TheMuffinMan posted:plenty of energy to come from the sun though right via solar panels I know. But using that to produce hydrogen which you have to store, transport and burn later on still has a huge rate of loss compared to conventional forms of battery storage. Your argument boils down to, "why would someone burn coal from the ground, when they can just use the sun to grow trees for fuel?" TheMuffinMan posted:most of the sun is plasma The sun is just using it's unfair advantage in gravity to squeeze protons together until it basically runs out. And it's actually a really slow and inefficient process, which only seems impressive due to sheer size. Per cubic meter the sun produces less heat than a human or a pile of compost. But if one of the natural constants was just ever so slightly different, stars would either burn through their complete fuel in seconds, or not react ever. Hooray for the Anthropic principle! cant cook creole bream fucked around with this message at 22:17 on Sep 20, 2023 |
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Sep 20, 2023 22:10
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"Green hydrogen produced through electrolysis using renewable power costs US$10-15 per kg , depending on availability. Grey hydrogen produced with cheap fracked natural gas costs US$2 per kg in the US, while in Europe, Australia and Asia it costs US$5-6 per kg due to higher natural gas prices" "The Honda Clarity vehicle obtained about 77 miles (124 km) per kilogram of hydrogen in the city, 67 miles (108 km) per kilogram highway and 72 miles (116 km) per kilogram in combined driving." Unfortunately there was not enough demand for the honda clarity so it was discontinued.
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Sep 20, 2023 22:23
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They took the fuel tank out, stuck a fat battery in its place, and sold it as an extended range hybrid. I own one.
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Sep 20, 2023 22:36
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TheMuffinMan posted:"Green hydrogen produced through electrolysis using renewable power costs US$10-15 per kg , depending on availability. Grey hydrogen produced with cheap fracked natural gas costs US$2 per kg in the US, while in Europe, Australia and Asia it costs US$5-6 per kg due to higher natural gas prices" those are very old numbers https://about.bnef.com/blog/green-hydrogen-to-undercut-gray-sibling-by-end-of-decade/  
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Sep 20, 2023 23:09
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I recently used 6$/kg for green H2 for some analyses. Not great but not 12$
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Sep 20, 2023 23:53
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MightyBigMinus posted:those are very old numbers uhhhhh that's why i quoted my "facts"
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Sep 21, 2023 00:09
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https://scitechdaily.com/new-breakthrough-in-energy-storage-mit-engineers-create-supercapacitor-out-of-ancient-materials/
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Oct 6, 2023 00:38
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https://scitechdaily.com/unusual-findings-overturn-current-battery-wisdom/
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Oct 6, 2023 00:48
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https://bgr.com/tech/a-special-molecule-that-violates-the-laws-of-physics-could-lead-to-limitless-energy/ (USER WAS PUT ON PROBATION FOR THIS POST)
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Oct 6, 2023 02:58
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Three articles with increasingly implausible headlines.
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