WITAF.

At best, he doesn’t understand what a Hybrid Car is.

  • grue@lemmy.world
    link
    fedilink
    English
    arrow-up
    16
    ·
    3 months ago

    Wow, even when he’s accidentally correct (hydrogen cars really aren’t good), his “reasoning” (if you can call it that) is dumb as Hell.

    The real problem with hydrogen cars (aside from H2 storage being a pain in the ass) is that they’re mostly a greenwashing scam, since the vast majority of H2 produced is not “green” hydrogen produced via electrolysis powered by renewables, but instead so-called “blue” hydrogen produced from natural gas or coal. If you’re gonna do that, you might as well just fucking burn the hydrocarbon in an internal combustion engine directly and save yourself all the damn hassle!

    • howrar@lemmy.ca
      link
      fedilink
      arrow-up
      3
      ·
      3 months ago

      I think the idea is that if you create the demand for hydrogen, then there will be more incentive to produce cheap and environmentally friendly hydrogen.

      • auzy@lemmy.world
        link
        fedilink
        arrow-up
        7
        ·
        3 months ago

        Even at 100% efficiency when producing, the efficiency of the car will still be much lower than battery (even batteries from decades ago were 90%+ efficient).

        Electric distribution basically abstract the energy source away from the car (you can use any battery chemistry). You can also feed power back into the grid

        With hydrogen, realistically, you just need to pray you improve it long term. Because at the moment it’s an efficiency suckfest.

        But it’s awesome for petrol companies and dodgy salespeople who want to provide cheap fuel that continues to F**k us whilst undercutting green alternatives

        • AA5B@lemmy.world
          link
          fedilink
          arrow-up
          3
          ·
          edit-2
          3 months ago

          We need to pivot the goal for hydrogen …… there are fossil fuel uses now that batteries can’t serve and hydrogen might be a good substitute.

          Instead of saying that even with feee electricity it’s too expensive to make green hydrogen for cars, let’s use that free electricity to make synthetic aviation fuel Or at least create hydrogen as a precursor

          • auzy@lemmy.world
            link
            fedilink
            arrow-up
            1
            ·
            edit-2
            3 months ago

            It’s not about free electricity though. It’s about efficiency

            It’s not about cost

            The facts are, with hydrogen, you waste at least 40% of the energy excluding transport due to inefficiencies and manufacture and fuel wastage . So you need to build a lot more solar panels. You also need clean water to do it

            With electric, you waste less than 10%

            We don’t have hydrogen planes yet, and it might not really be that feasible (there are a lot of considerations for planes. I’ve actually got a pilot licence).

            With hydrogen, you need almost twice the solar panels to produce the same results

            You also need to consider, battery technologies are still early days. If lithium at the moment supports 1000km of travel, later generation lithium air can support 12000km with the same space.

            That’s why hydrogen has such limited applications too. Because even if you increase the density of lithium 2x, most applications where hydrogen benefits disappears

            But in reality we’d probably shift from lithium anyway I’m guessing

            Hydrogen still hugely better than gas though, and Trump is an idiot lol

            • AA5B@lemmy.world
              link
              fedilink
              arrow-up
              1
              ·
              edit-2
              3 months ago

              Let’s start by agreeing Trump is an idiot and battery electric vehicle technology covers personal transportation. We need to move as completely as possible to renewable energy.

              However

              • current BEV technology can’t replace aviation, shipping, cargo trains, construction and farming equipment, and we don’t really have a good solution yet. We’ll keep improving related technology and see how far it goes but we may need other choices.
              • renewable energy is intermittent and current grid storage technology does not scale. It’s great to stabilize the grid and allow peaked plants to come online but not to, for example, last through the night until solar is again available. We’ll keep improving related technology and see how far it goes, but we may need other choices

              One possible choice to cover both storage and creation of renewable fuel for the cases where batteries do not scale, is hydrogen. We do need to overbuild renewables, because production is affected by the weather, plus we need to produce enough energy in part of a day to run everything for a full day. Production of hydrogen might let us productively convert that daylight (for solar) energy into nighttime energy, and might help other areas where batteries don’t scale. And it doesn’t have to be hydrogen directly: perhaps we need a liquid fuel that works at room temperature and green hydrogen can be a precursor to methane or some variation of synfuel. That can be stored or manipulated more regularly. A tank of green synfuel might be an effective storage for turning daylight energy into nighttime time energy. We already have an approved synthetic aviation fuel - using renewable energy to create that might be more efficient than the more difficult task of scaling batteries for aviation

              While I completely agree on the limitations of green hydrogen as a primary fuel, I also see that there are many usages that neither renewable nor storage nor batteries can yet scale for. Hydrogen as a storage medium is no worse than those options

      • Sconrad122@lemmy.world
        link
        fedilink
        arrow-up
        6
        ·
        3 months ago

        And natural gas was supposed to be an transition energy source to get America off coal so that we could transition to renewable energy. History has not been kind to the “if we can just implement this greenwashed fossil fuel process, it’ll really allow us to unlock green energy potential down the road” promise

        • aesthelete@lemmy.world
          link
          fedilink
          arrow-up
          6
          ·
          3 months ago

          It’s kinda like software development…every experienced dev is aware that when management says we’ll do it shitty for now and fix it later that later never comes.

      • quicklime@lemm.ee
        link
        fedilink
        arrow-up
        6
        ·
        3 months ago

        I’m pretty sure the basic thermodynamics of it are against truly green hydrogen production ever becoming cheaper than the dirty business of producing it by reforming methane from natural gas, unless basically all fossil fuel subsidies are someday cancelled – or else after the energy cost of energy gets so high (in other words, the energy return on energy invested falls so low) that it’s no longer practical to extract fossil fuel from the ground regardless of price or any other economic factor; – but by that point in the future, that same scarcity will have permanently crashed the world economy thus humanity will already be in forced deindustrialization. I could go on…

        • I_Has_A_Hat@lemmy.world
          link
          fedilink
          arrow-up
          4
          ·
          3 months ago

          The thing is, hydrogen is a byproduct of damn near every industry. It’s usually just released into the atmosphere because it’s a pain in the ass to capture and store and isn’t worth much. If it starts being in demand, you can bet your ass they’ll start trying to gather it.

          • quicklime@lemm.ee
            link
            fedilink
            arrow-up
            3
            ·
            3 months ago

            Remember, though, that it is currently profitable to reform hydrogen out of methane, at the same time as it’s not profitable to contain and sell ‘byproduct’ hydrogen. There are sure to be reasons why, and they might be fairly durable reasons that don’t change much even as the demand for hydrogen increases. I’m no expert on this so I won’t speculate too much on what those reasons might be – maybe factors related to scale and logistics?

    • LordKitsuna@lemmy.world
      link
      fedilink
      arrow-up
      3
      ·
      3 months ago

      The part that pisses me off the most about this is that in states that have a very heavy amount of Renewables like let’s say California they are literally curtailing insane amounts of solar because there’s literally nowhere for them to put it.

      Meanwhile they will simultaneously say they can’t do green hydrogen because it takes so much energy and isn’t super efficient, they will also say the same thing about desalination it needs too much energy where are they supposed to get it from. Motherfucker you are literally curtailing solar constantly just fucking dump it into one of those two things who cares if it’s not the most efficient 20% efficiency is better than 0% efficiency

      (ノಠ益ಠ)ノ彡┻━┻

      • grue@lemmy.world
        link
        fedilink
        English
        arrow-up
        3
        arrow-down
        1
        ·
        3 months ago

        In… California they are literally curtailing insane amounts of solar because there’s literally nowhere for them to put it.

        Um…

        ?

        • batmaniam@lemmy.world
          link
          fedilink
          arrow-up
          5
          ·
          3 months ago

          They meant “no where to put the power”, which is true (although it’s not a new problem by any stretch and there’s a lot going on to address it).