Volkswagen develops hydrogen car that can travel 2k kilometers on one tank

Post by _hypx » Sun, Oct 30, 2022, 9:22 PM UTC

jillesvangurp wrote: post #110

insane_dreamer wrote: post #3

Hydrogen is very appealing, but the lack of a distribution system makes it highly unlikely. It's hard to see Toyota and Honda continuing to make hydrogen cars much longer. Maybe for trucks?

Only if you ignore the cost and poor end to end efficiency. The reason there is no distribution system is that the vast majority of hydrogen is consumed where it is produced. It's just very hard and expensive to move hydrogen around. Most hydrogen is used to produce ammonia for the purpose of creating fertilizers. If you consider the whole chain of energy conversions, hydrogen has a very poor efficiency: - electrolys…

Post by fomine3 » Mon, Oct 31, 2022, 12:56 AM UTC

szundi wrote: post #55

plorg wrote: post #51

Earlier quoted context omitted.

Hydrogen, also, has a much lower volumetric energy density that gasoline, diesel, or even LNG, and requires a bunch more equipment to maintain the cryogenic temperatutes required to keep it in a liquid state.

Funny to imagine how it burns in the fuel cell to maintain the cryogenic environment - thus it just depletes itself sitting in the same place.

Post by fomine3 » Mon, Oct 31, 2022, 1:05 AM UTC

gernb wrote: post #36

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?

Post by FullyFunctional » Mon, Oct 31, 2022, 1:29 AM UTC

bombcar wrote: post #69

gernb wrote: post #36

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?

You need a lot of solar to charge a vehicle but it is attainable. You'd be better off with something like a M35A2 with the multi-fuel engine for actual apocalypse, because that thing can burn damn near anything you can find (you could run it for years on engine oil drained from mad-max style hulks). Someone may have even modified one to run on LPG also.

Post by tomxor » Mon, Oct 31, 2022, 1:38 PM UTC

ranieuwe wrote: post #80

Waterluvian wrote: post #60

Earlier quoted context omitted.

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...