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Cake day: May 21st, 2024

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  • And when people jump to “yeah but Democrats are to blame” I know we’re usually already in Bad Faithville. Both Sides and all that.

    Just no. This is not about both sides in any shape way or form. This is about agency. Fact is: There were ways to do this and the last three Democratic presidents (including the sitting president) have campaigned and outlined plans to codify it into law and didn’t. Yes it may have taken people by surprise that the country and the world is regressing as early and fast as it is, but that doesn’t take away agency, especially when they didn’t even try to spring to action after mere lip service to garner votes.

    The thing is: The conservative, religious right, openly formulated and has been following their plan of judicial activism for decades. The lower courts haven’t become this biased towards Republican policy over night. It was due to bad luck, bad faith acting of McConnel and the other Republican senators and stubberness of some involved people on the other side of the aisle that Trump was able to nominate this many people to the USSC. It would have happened at some point.



  • Hate to be that guy, but it is also the present (hopefully not future) the Democrats have allowed Republicans to build:

    Bill Clinton promised to codify Roe v. Wade into law. He didn’t.

    Obama promised to codify Roe v. Wade into law. He didn’t despite having a super-majority in his first two years.

    Biden promised to codify Roe v. Wade into law and didn’t. The Dobbs decision was taken in June 2022, so before the midterms when Democrats still had a simple majority in the house and a tie + VP in the senate. When there were rumors/leaks a month or so before the decision that the USSC would take that decision soon. Again: Inaction.


  • There’s two problems with your last post which have to do with physics.

    1. Fuel Cells and the process of hydrolysis have a limit on their efficiency. Just like with ICEs there isn’t much potential there.
    2. Between Hydrolysis and the Fuel Cell, there are other lossy processes. Usually the tanks contain pressurized H2 and depending on the usecase even liquid H2. Modern automobile cases use 700-800 bars of pressure. That process is again at around 85% efficiency in a good case. Cooling applications further deteriorate the efficiency and need more energy for storage and/or losses during storage. There are other technologies in research right now, like metal hydride storage, where we’ll have to see what exactly they can do (right now we’re at the stage where we are promised an all-purpose hype, but mostly through the media and not the ones doing the work)

    I’m not disputing that capitalism has it’s thumb on the scale; as you’ve written, the synergy to use H2 derived from natural gas is one effect, but it doesn’t stop them from advertising it as green. The physical limits though, one cannot argue with. Their effects would mean a lot more infrastructure that is necessary, with it more materials, which are limited too. Even if possible, we have limited construction capacity, which means that it would take us longer to reach the goal, when time is of the essence. Which leads me to the same conclusion, that where the advantages like power density isn’t absolutely necessary or other solutions are not available, use a better solution.



  • It is not only economic cost though. As I’ve mentioned, materials are also limited (on the same level as: There isn’t enough copper to wire all motors needed to replace all cars today with EVs). And it needs alot of surface area compared to the concentrated power plants of the past, which means an even bigger impact on the biosphere (especially if not done on rooftops in cities but in mountain ranges or fields, etc.). Don’t get me wrong; solar energy, if done right, is the only source that doesn’t interfere with natural cycles and does not increase entropy of the planet (which makes it actually sustainable). Using it inefficiently though, means inefficient use of other resources which are limited. (Not only economic. But on that note: Public infrastructure is always built with costs in mind, because we shouldn’t waste tax money, so we can do a better and more comprehensive job with what we have.)

    So if there is a more efficient way to store energy for long periods, then it should take precedence over a very inefficient one. This will get complex since it is very much dependent on the local conditions such as sunshine, water sources and precipitation, landscape, temperatures, grid infrastructure and much more. As an engineer, I would throw in though, that if you need this secondary storage, that is not much cheaper, doesn’t have some very essential advantage, or doesn’t mitigate some specific risk, but is much more inefficient over your primary storage, then the system’s design is… sub-optimal to put it mildly.

    For the argument of exploring everything: We simply can’t. More precisely we could, but it would need much more time, money and resources to arrive at the goal. And since climate catastrophe is already upon us, we don’t have that time and need to prioritize. Therefore a technology that has a physical, not human-made, efficiency limit loses priority as a main solution. That doesn’t mean, that H2 should not be looked into (for specific purposes, where it is essential or the reuse of existing infrastructure is the better option), but that we have to prioritize different avenues, with which we can take faster strides towards true carbon neutrality.

    P.S. it doesn’t help, that today’s H2 is almost exclusively derived from natural gas.


  • I agree that H2 can have certain applications as a bridge technology in some industries, but there is a very important parameter missing in your premise.

    Even if solar power seems “free” at first glance it really isn’t. It needs infrastructure, e.g. Photovoltaic Panels and lots of it. So just having H2 instead of a battery for an application means, it needs thrice the PV capacity or even more and with it the grid capacity. Now add to that, we aren’t just talking about replacing electricity from fossil fuel plants by PV, but about primary energy as a whole, which makes the endeavor even more massive. Also H2 will not magically become much more energetically efficient in its production, transport, storage and usage, because there are physical limits. (Maybe with bacteria for production) The tech could and should get better concerning longevity of the electrodes for example. Also as the smallest molecule out there, storage will never be completely without losses. And long term storage requires even more energy and/or material.

    All this is to say, that efficiency is still paramount to future energy supply, since also the material is limited or just simply because of costs of infrastructure and its implications on the biosphere. Therefore such inefficient energy carriers as H2 or what people call “e-fuels” should be used only where the enormous power and/or energy density is critical. H2 cars should therefore never be a thing. H2 or e-fuel planes, construction machines or tractors on the other hand could be more appropriate uses.



  • To be fair, business development wasn’t the main hangup for many of the people I know. The two main reasons I heard (and partly raised myself), was firstly the detrimental effect on expanding solar- & wind-energy-production. And secondly overreaching, i.e. not limiting the protection to the environment, but also include townscape protection and historical sites, essentially further restraining residential development (including changing them into more dense usage) in a time where living space is scarce and expensive.

    When the pro-side has its reservations, then of course it doesn’t help that the executive (Federal Council) is dominated by pro-corporate ideology and have brought forward arguments of “damaging the business location”. But making it out to be the only reason is just dishonest.




  • AliSaket@mander.xyztoMemes@lemmy.mlI hate excel so much
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    2 months ago

    As an engineer I can attest that it is also useful for quick calculations and illustrations, especially at the concept stage. We also ran process “simulations” in it for fun, but of course something like SciLab would be better suited for it. The possibility to simultaneously work in the same spreadsheet was also a godsend during lock-downs.


  • I aim to motivate understanding, not assign blame. So I apologize if the tone was a bit aggressive here or there.

    Please understand though, that personal and local experience with something so complex and global is the analogue of using anecdotal evidence to then ignore all quantifiable and statistical evidence. E.g. Because it snows where I live, the planet can’t be warming. Because Aspirin give me nausea, it must be bad… And from that standpoint hurling the accusation of being sheep blindly following some agenda driven group (of which I’m not disputing the existence), well, it’s not very scientific to say the least. And cementing that with that you have done your due diligence with talking to climatologists, and reading articles etc. can lead one to not see this as “just an opinion” but that you add alot of weight to it.

    Please help me understand, how you formed the opinion, that climate change isn’t “a serious concern”. What kind of evidence led you “to different conclusions”? And what suggests the earth be cooling?

    Sidenotes: Science in its essence is a pursuit of objective truth. Politics is not. Neither is the economy. And even if the scientific community faces its challenges, let me illustrate this over the mask issue during the last pandemic. We were faced with a new virus on which we didn’t have data, hence why there were things believed true at first, which got corrected later, when more data was available. Add to that, that mutations changed properties of what we initially had to deal with. Opposed to that are politicians. In more than one country, the health ministers lied intentionally to the people, claiming at first that masks don’t work, because they didn’t want a run on that limited resource due to their failings in preparation. The data didn’t suggest it. When availability improved, we then had mask mandates. It was not because of science, but politics which have to weigh several interests at the same time and where the agenda comes into play.

    Journalists in today’s sensationalist and outrage culture also misrepresent studies to generate clicks. This is why one can get the impression, that studies contradict themselves until one goes to the original text and sees that the claim being made in a news article (probably its title) is mentioned as one, that explicitly cannot be made without further research.


  • Yes these are all good and valid arguments as a bridge technology used when we can’t meet demands through other, already availabe, often better suited technologies. With the power structures today though, it often gets pushed as the ONLY future. Which is what I’m pushing back against. We should use it where it makes sense, not where it serves some particular interest group to consolidate power to the detriment of us all. I mean H2-cars? Really?


  • Note, that in writing down this post, you haven’t brought forth any objective argument to justify your skepticism. Your argument that because people have agendas, you should be skeptical could be ok if the goal is to get objective information, not form a reactionary opinions.

    A strong scientific consensus over this topic is not the result of some political agenda but of the scientific method. One of the central parts of it, is that any claim must be falsifiable through experiment. When anyone comes with a claim, others will try to reproduce or falsify it. Depending on the results the claim is either rejected or used in further research. With vasts of experiments explaining the effect or verifying the effect to better explain what was previously known, a consensus is formed. Politicians are only involved when it comes to appropriating public funding for research. That doesn’t corrupt the research itself, but hinders it if research can’t be done. When industry funds it though, then it does degrade the research very often (see tobacco industry in the 1920s-1980s, the food industry until today, or oil&gas industry which have known about the effects for at least the 1970s through their own research and have not published it).

    For some more factual things you can read up on:

    That CO2 gets warmer when subjected to light is known since the 1850s when Eunice Foote did experiments with water vapor and CO2 and made this observation and roughly quantified it.

    John Tyndall did incorporate this effect into a first, very rudimentary, climate model of the atmosphere in 1862. The global temperature projections of that model for 1950 aren’t perfect, but still astonishingly precise.

    Planck in 1900 formulated the Planck Postulate as part of his work concerning black body radiation. Quantization he thought of as a mathematical quirk. Einstein a few years later proposed that the energy of light or photons to be more precise is itself quantized. Einstein got his Nobel Prize in 1923 adopting this to not only explain the Plack Postulate (radiation) but also the photoelectric effect, i.e. that a molecule such as CO2 can absorb energy from the electromagnetic radiation interacting with it.

    The scientific community was not convinced of the anthropogenic nature of the warming of the climate until in 1957 Roger Revelle and Hans Suess use the C14-method to show that the ratio of C-isotopes in the atmosphere is shifting towards those of fossil fuels. Since then more measurements have been done using this method to date things and reconstruct atmospheric composition (e.g. through ice-coring).

    Since then technology such as satellites have improved the overall quality of measurements. And all of them show a clear tendency. With more computational power climate models have become more powerful and the projections are very good. The differences to measurements, when they happen are usually underestimating because the models are conservatively developed. You can refer to the IPCC reports which show you the data pretty clearly. If you want, then look at data from your local weather station, if it existed over 100 years ago, but even if only 50 years and you’ll probably see a difference even locally. Do that for all stations in the world and you can see a clear trend.

    These are only a fraction of topics which anybody can read up on to form an informed decision, rather than opposing something just because it is consensus.

    edit: A word.



  • The main problem with Hydrogen is the efficiency. If we want to get off fossil fuels, we need to talk about primary energy, not only the electricity consumed today. That alone means that we need multiple of the electric production (the physicist in me shudders at that word) of what we have today.

    So instead of the finite resource of oil or gas, there’s a bottleneck in energy production and its infrastructure, which means that we need to be efficient with the energy we have. With Hydrogen, you first need energy for Hydrolysis, then cool it down and pressurize it which uses a lot of energy. And then converting it back in the fuel cell to usable electric energy is again lossy. On a good day that’s an overall efficiency of about 30% (which is around the peak efficiency of the combustion itself in modern ICEs). A good LiPo Battery (which comes with its own problems, and for industrial applications energy density is less of a problem) has a roundtrip efficiency of 98%. So you’d need triple the production infrastructure (PV, wind mills, geothermal, etc.) for your storage, if you’d do everything with H2 compared to everything with batteries.

    Which means, that if there aren’t major breakthroughs, like a totally different technology (e.g. photosensitive bacteria) to produce H2 at a multiple of the efficiency of today’s tech, then H2 and E-Fuels in general have to be reserved for the applications, where energy and power density are un-negotionable (like airplanes, some construction equipment, or for some agricultural applications).