this post was submitted on 21 Sep 2023
272 points (98.2% liked)

World News

39019 readers
2504 users here now

A community for discussing events around the World

Rules:

Similarly, if you see posts along these lines, do not engage. Report them, block them, and live a happier life than they do. We see too many slapfights that boil down to "Mom! He's bugging me!" and "I'm not touching you!" Going forward, slapfights will result in removed comments and temp bans to cool off.

We ask that the users report any comment or post that violate the rules, to use critical thinking when reading, posting or commenting. Users that post off-topic spam, advocate violence, have multiple comments or posts removed, weaponize reports or violate the code of conduct will be banned.

All posts and comments will be reviewed on a case-by-case basis. This means that some content that violates the rules may be allowed, while other content that does not violate the rules may be removed. The moderators retain the right to remove any content and ban users.


Lemmy World Partners

News !news@lemmy.world

Politics !politics@lemmy.world

World Politics !globalpolitics@lemmy.world


Recommendations

For Firefox users, there is media bias / propaganda / fact check plugin.

https://addons.mozilla.org/en-US/firefox/addon/media-bias-fact-check/

founded 1 year ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
[–] joel_feila@lemmy.world 1 points 1 year ago (1 children)

Wait getting in the car is more complex?

[–] night_of_knee@lemmy.world 1 points 1 year ago* (last edited 1 year ago) (2 children)

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?

[–] supercriticalcheese@feddit.it 2 points 1 year ago

Hydrogen is a gas, under very high pressure but you will never find it in a liquid form unless you cool it down to -250 C or so. It's not used in liquid form for such applications.

There is though the need to chill the hydrogen to about -20/-40C before delivery to the vehicles due to some anomalous properties of hydrogen respect to ever other gas known to humans.

[–] joel_feila@lemmy.world 2 points 1 year 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.