81–90 of 126 posts
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There is that subtle issue of how do you get hydrogen.... Takes energy to make it.
You can just break apart water with very small tiny little hammers. Finding the miniature dwarfs to do this is the tricky part.
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Batteries needed electric vehicles are still expensive and seem to essentially be the bottleneck for mass change to EV. The infrastructure needed to support battery electric vehicles seem to be expensive/complex to run sufficiently well in practice. In the US Tesla's supercharger network is often cited as a moat against other manufacturers. It's not even building the chargers - it's maintenance and compatibility. Cha…
Counterpoint: I can't even refill my damn inkjet without the manufacturer doing their damnedest to get me to pay multiples for what's essentially commodity ink. I have no faith that hydrogen won't work the same.
Cars on the other hand are heavily regulated.
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Sigh. This is the kind of obvious, simple, sensible answer that I feel silly not immediately considering. The only downside (shared by my initial thought) is that they aren’t collapsible. So that volume is committed even 1/4 way through my trip
They sell those! They are used frequently in rescue settings. The can is basically a big cubical heavy plastic bag. Your alternative is of course to fill some plastic bags from your local grocery store like this [1] lady did. [1] https://twitter.com/FiendishlyYours/status/13919904872220016...
Some time ago I saw a presentation from the chaos computer club where an expert on the matter explained there is a lot of misunderstandings about hydrogen technology as an energy source and how is gonna useful for society and why it is necessary. In a nutshell some industries that currently rely on natural gas cannot switch effectively to electricity, hydrogen seems to be the only solution at the moment. Regarding tr…
Batteries needed electric vehicles are still expensive and seem to essentially be the bottleneck for mass change to EV. The infrastructure needed to support battery electric vehicles seem to be expensive/complex to run sufficiently well in practice. In the US Tesla's supercharger network is often cited as a moat against other manufacturers. It's not even building the chargers - it's maintenance and compatibility. Cha…
The main advantage Tesla currently has is the size of the network as well as the seamless integration into their navigation system and automatic payment without a custom card. However this could be easily done by competitors if they would grasp the importance of it.
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Looks like the worst of both worlds at the first glance. However depends by the costs of batteries. In a world with an abundance/excess of green energy but expensive batteries to store it hydrogen makes sense. The conversion of electricity->hydrogen->electricity is quite inneficient so batteries better be cheap enough otherwise we will go the hydrogen way for cars as well.
I think you’re under the impression that it requires the hydrogen generator? You can use the hydrogen tank if you are without somewhere to charge the vehicle, but you can also just use it as a traditional EV and charge as you normally would.
If batteries are too expensive then you would have an electricity -> hydrogen conversion at the power plat/wind farm.
Some time ago I saw a presentation from the chaos computer club where an expert on the matter explained there is a lot of misunderstandings about hydrogen technology as an energy source and how is gonna useful for society and why it is necessary. In a nutshell some industries that currently rely on natural gas cannot switch effectively to electricity, hydrogen seems to be the only solution at the moment. Regarding tr…
The biggest misconception being that hydrogen is an energy source. We currently do not capture any hydrogen from nature. Almost all industrial hydrogen is currently derived from fossil fuels.
Somewhat off-topic: why "2k kilometers" instead of 2 megameters? I do realize that in daily life people rarely use distances of that order of magnitude, but the semantic connections between kilobits megabits, kilowatts megawatts appears to be entirely accessible to essentially all adults, so why use the awkward "thousands of kilometers" instead?
Somewhat off-topic: why "2k kilometers" instead of 2 megameters? I do realize that in daily life people rarely use distances of that order of magnitude, but the semantic connections between kilobits megabits, kilowatts megawatts appears to be entirely accessible to essentially all adults, so why use the awkward "thousands of kilometers" instead?
I've gotten used to the idea that it seems like if I get a solar roof and power system that I can charge my electric car during the zombie apocalypse, where as AFAIK, I can't easily create gasoline or enough hydrogen for a hydrogen powered car. Right?
Hydrogen is simple to produce if you have access to water and electricity. Gasoline is much harder to do, though.
A thinly veiled advertisement for Kraftwerk Tubes, whose founder Sascha Kühn has at least once before completely failed to deliver. https://www.businessinsider.de/gruenderszene/allgemein/kraft... Google Translate link: https://www-businessinsider-de.translate.goog/gruenderszene/...