• assassin_aragorn@lemmy.world
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      2 years ago

      Ironically hydrogen works well as a storage solution for the variability of wind and solar. When you have a large excess of them, you can run electrolyzers to generate green hydrogen. And then when the grid needs some more supply, we can use that hydrogen to make up the gap.

      • Hypx@kbin.social
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        2 years ago

        Which is basically the same problem with green transportation: A car is usually lightly used, but every once in a while you drive hundreds of miles. That requires a high capacity energy storage mechanism where “efficiency” is not that big of a concern. But that creates the need for hydrogen cars. At best, you can conceive of a plug-in hybrid car where short trips are battery powered. But then you have redundant infrastructure, and it is simpler to just to move everyone to hydrogen.

        • assassin_aragorn@lemmy.world
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          2 years ago

          I will also say that transport and storage of hydrogen is way better than what people are envisioning here. Full disclosure, I work for a hydrogen energy company, so I am biased, but I also have seen things in this space work well

  • coyootje@lemmy.world
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    2 years ago

    This is my main problem with hydrogen cars. I think it’s a very cool concept that might eventually overtake pure electric cars but there’s almost no places to get hydrogen yet.

    • FuglyDuck@lemmy.world
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      2 years ago

      It also requires dedicated infrastructure. EVs can have charging stations at basically anywhere with a power hookup (or a genset. A grocery store here puts small VAWTs to charge off of in their parking lots. And every new-ish building has added charging stations to some of their spaces.

      Hydrogen cars would need refueling stations with dedicated pressurized gas hookups, tanks, and fill machines. And the tanks and the tankers to keep the tanks full.

      Finally the ultimate problem is it’s rather low energy density.

      • AA5B@lemmy.world
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        2 years ago

        And all that infrastructure is a problem that doesn’t need solving with EVs. An entire industry we don’t need to build/rebuild

    • rentar42@kbin.social
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      2 years ago

      Why do you think it’ll overtake electric cars? The energy efficiency of hydrogen cars is significantly worse, as they introduce some extra steps in pipeline of energy-generation -> movement.

      The only major advantage they have is “ICE-like” fuelling, which has a bunch of major caveats attached to it (as in: it’s nowhere near as simple a system as ICE refuelling. Everything from generation, to transport to getting-it-in-the-car is way more complex and thus expensive and error-prone).

        • night_of_knee@lemmy.world
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          2 years ago

          I hadn’t thought of it before but it’s obvious, hydrogen is a gas at room temperature, it had to be stored under pressure in order to get any significant mass into the volume of a tank. So it’s under pressure in the refueling station and in the car’s tank. How does it get from one to the other without boiling away?

          • joel_feila@lemmy.world
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            2 years ago

            oh there are a few ways. One group is researching turning H2 into a paste. the paste mixes with water and breaks down into water and Ca+ ions. You now have a energy density around liquid hydrogen and it only add some calcium to the exhaust. There is also storing hydrogen in metal disks.

    • Flying Squid@lemmy.world
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      2 years ago

      Something else no one has said yet (I think) is that most hydrogen is produced from natural gas, so this is in no way a climate solution. It’s been sold as one and it’s bullshit.

      • UniquesNotUseful@lemmy.world
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        2 years ago

        Yes but not for long.

        As (generally climate denying) people love to point out, wind and solar is erratic power generation. For this reason you need triple capacity Vs requirements.

        This means that for a huge amount of time you’ll have excess energy, once we start to be predominantly renewables, battery storage is expensive. One of the solutions is to create hydrogen, also pumped hydrogen, etc.

    • Carighan Maconar@lemmy.world
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      2 years ago

      I dunno, everything I’ve always seen on it made it seem like a hyper-specific solution that’s more suited to a few edge cases that could have their specific infrastructure.

      For the average consumer, the recharging of EVs is actually Not A Big Deal™️. It seemed like one at first. Now all it does is ensure I take hourly short breaks which I should have been doing anyways, basically. The only big upside of Hydrogen is the ability to refill very quickly, but you pay with a whole bunch of downsides like inefficient generation, inefficient transportation, secondary infrastructure, energy inefficiency, etc.

    • endhits@lemmy.world
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      2 years ago

      They’re still electric cars at their base. They just use a hydrogen reactor in lieu of a battery to power the motors.

      I don’t see a future where hydrogen supplants electric cars, unless there’s some revolution in storage technology for it. In that case, progress in battery tech is more likely.

  • Brickhead92@lemmy.world
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    2 years ago

    The same will happen to EVs after them libs still all the electricity with their solar panels. /s

    • Lmaydev@programming.dev
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      2 years ago

      Unfortunately capitalism will keep killing things that are good for the environment while we spend 7 trillion subsidizing fossil fuels.

        • Lmaydev@programming.dev
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          2 years ago

          Haha someone woke up on the wrong side of the bed this morning.

          So you think 9 trillion couldn’t be spent better than fossil fuel subsidies?

  • drudoo@lemmy.world
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    2 years ago

    Weird that this hasn’t been on the local news. I see Drivr cars all the time.

    • Hypx@kbin.social
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      2 years ago

      Hydrogen is guaranteed to win this one. Batteries are just another unsustainable greenwashing idea. People are falling prey to BEV propaganda.