15
If the the car that ran on water everybody's uncle told them about actually did exist how long until no fresh water? (lemmy.dbzer0.com)
submitted 12 hours ago* by to c/asklemmy@lemmy.world
30 comments fedilink hide all child comments
you are viewing a single comment's thread
view the rest of the comments
[–] 1 point 11 hours ago (16 children)

Can you please name a make & model? Otherwise afaik Big Oil works really hard to make sure hydrogen powered vehicles never get into the hands of common folk.

  • permalink
  • fedilink
  • source
  • parent
  • hideshow 16 child comments
    •
  • [–] 4 points 10 hours ago (1 child)

    Hyundai Nexo

    Honda CR-V fuel cell

    Toyota Mirai

    They're mostly only sold in Japan and California, as that's where there's actually hydrogen fueling infrastructure.

    There are other models, they exist, these cars are real.

  • permalink
  • fedilink
  • source
  • parent
  • hideshow 1 child comment
    •
  • [–] 3 points 11 hours ago (9 children)

    Big Oil doesn't need to. Hydrogen cars are almost as inefficient as ice cars. They make no sense.

    Maybe for trucks or trains, but even there electric is better

  • permalink
  • fedilink
  • source
  • parent
  • hideshow 9 child comments
    •
  • [–] 1 point 11 hours ago (8 children)

    I guess you must be right, since they don't seem to be as popular as the other options. But Wikipedia says they have a 300+ mile range per full tank, so I'm not sure how that could be less efficient than my diesel truck with the same range.

  • permalink
  • fedilink
  • source
  • parent
  • hideshow 8 child comments
    •
  • [–] 1 point 10 hours ago (3 children)

    Their main issue with popularity might be options to actually get the fuel. It like in the very beginning of EV cars, only that you can't even fill it up at home. And h2 cars don't have the same momentum as EV cars so the chance of that network growing is very slim

  • permalink
  • fedilink
  • source
  • parent
  • hideshow 3 child comments
    •
  • [–] 1 point 1 hour ago (1 child)

    I mean, you could create your own hydrogen at home. Hydrolysis machines exist, and are sometimes sold as medical devices to create pure oxygen from water. The other half of the output is hydrogen, which would be to be captured in a way that you can put it into your car.

    It's an extremely inefficient way to power a car, though. Converting electricity to hydrogen and back to electricity (as most hydrogen fuel cell cars do) is a ton of loss. It's also a bunch of complexity, both mechanical and on the operator.

  • permalink
  • fedilink
  • source
  • parent
  • hideshow 1 child comment
    •
  • [–] 1 point 10 hours ago (2 children)

    Hydrogen storage takes up insane amounts of space, and converting water to hydrogen is really inefficient. Hydrogen fuelcells are just electric cars, but complicated.

    https://m.youtube.com/watch?v=vJjKwSF9gT8

  • permalink
  • fedilink
  • source
  • parent
  • hideshow 2 child comments
    •
  • [–] 1 point 10 hours ago (1 child)

    Not to forget, that converting it back into water also doesn't produce that much usable power. You end up with an efficiency of maybe 30-40% compared to an EVs 80-90%

  • permalink
  • fedilink
  • source
  • parent
  • hideshow 1 child comment
    •
  • [–] 2 points 10 hours ago

    That too yea. The only thing better than an ev is the fast refueling, but imo that doesn’t matter as you really should take a longish break after 2-300 miles and at that point, just charge your ev while you take a piss or do some stretching.

  • permalink
  • fedilink
  • source
  • parent
  • [–] 2 points 10 hours ago (2 children)

    The conversion of water to hydrogen using electricity has about 20% efficiency. There is no advantage over electric vehicles ever since batteries have become compact enough to make battery-powered electric vehicles feasible.

  • permalink
  • fedilink
  • source
  • parent
  • hideshow 2 child comments
    •
  • [–] 1 point 2 hours ago* (1 child)

    There is no advantage over electric vehicles

    What about batteries' explosive potential & a lifespan shorter than the metal cage it propels?

    Hydrogen vehicles would be superior to that.

  • permalink
  • fedilink
  • source
  • parent
  • hideshow 1 child comment
    •
  • [–] 1 point 1 hour ago

    What about batteries' explosive potential

    Compared to a literal TANK OF HYDROGEN. Hmmmm.....

    a lifespan shorter than the metal cage it propels?

    Yeah, there aren't any cars in the junkyard that were scrapped because they threw threw a rod or chewed up their transmission....

    Wow. Just, wow.

  • permalink
  • fedilink
  • source
  • parent