supercriticalcheese

joined 2 years ago
[–] [email protected] 3 points 2 years ago (1 children)

I just realised I had purchased the first one on Steam but never played it.

[–] [email protected] 1 points 2 years ago

in other news water is wet

[–] [email protected] 1 points 2 years ago (1 children)

Depends on what happens when they make errors. Is it comparable to human errors or are they prone to making worse mistakes than humans on average in terms of the conseguences.

They might be 99.99% perfect but in 0.01% of cases cause massive car pileups in motorways (for example) due to reasons.

A proper risk analysis based on a controlled transition would be better to be done first.

[–] [email protected] 3 points 2 years ago (3 children)

We don't even know if they are better than humans in an actual driving environment that is more challenging higher speed roads etc...

It is insane to think the slow speed tests are representative of the entire possible scenarios. Or they might fail in driving in things like roundabouts or merging into motorways much more often than humans or who knows what edge cases.

[–] [email protected] 5 points 2 years ago

That is irrelevant to the topic.

The reason why hydrogen is produced by steam reforming is because natural gas is cheap and is needed to produce ammonia. In Norway where there is plenty of cheap electricity from hydroelectric, there is hydrogen production via electrolysis.

The advantage of hydrogen as fuel is that can be used to decarbonise things like ships, and possibly things like branch rail lines, and planes. Passenger vehicle is probably the least attractive application, but somewhat lower capital investment than a green hydrogen plant on a industrial scale.

However this can only make sense if electricity is cheap i.e. if they are running with waste electricity from renewables.

[–] [email protected] 2 points 2 years 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.

[–] [email protected] 1 points 2 years ago

That's quite a challenge 45 minutes in hot weather. Specially if there is not shade

[–] [email protected] 4 points 2 years ago (2 children)

I never seen a standing desk honestly, I thought it was a meme more than anything else.

[–] [email protected] 15 points 2 years ago (6 children)

It doesn't bother you looking up or are you a giraffe ?🦒

[–] [email protected] 2 points 2 years ago

okay so it's just counting the small/branch lines not the whole network.

[–] [email protected] 36 points 2 years ago (1 children)
[–] [email protected] 0 points 2 years ago

No it's not stored as liquid BLEVE is not a concern here, but there is plenty of issues with explosivity and very high preasures which can be 300-500 bar (~atm) depending on the application.

view more: ‹ prev next ›