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Cockmaster
Feb 24, 2002


Digital Apprentice posted:

Transporting hydrogen over long distances is actually more efficient than electric transmission since there is negligible loss, unlike traditional AC lines where around 10% of power is lost in transmission.

The problem there is that with hydrogen, there are a lot of other places where energy is lost. Generating power in a fuel cell is way less efficient (something like 50% overall, maybe a bit more) than discharging a battery, and cramming hydrogen into a high-pressure tank takes quite a bit of energy.



CocoaNuts posted:

Good post.

Agreed. A refuelling network poses a real challenge at this point, but like the Tesla recharging stations, the infrastructure behind the technology would grow in time.

At least with batteries, you have the option of charging at home for average day-to-day driving - most people would only need public charging stations for unusually long trips.

Plus electricity is already available everywhere - producing and installing battery charging stations might be easier on a national scale than having to worry about hydrogen production plus transportation plus fueling stations.

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Cockmaster
Feb 24, 2002


mobby_6kl posted:

Batteries are getting dense and cheap enough reasonably quickly, I don't see how hydrogen could compete really. There are way too many complicated problems that have to be solved.

Yeah, fuel cells seemed like a good idea when EV researchers were struggling to get much more than 100 miles of range. Now we have EVs that offer the same range as the average gasoline car, as well as charging technology that would be almost as fast as refilling a hydrogen tank.

Tesla even has their electric semi - if they could get that to where it would be practical for long haul trucking, automotive fuel cell technology would be all but obsolete.


quote:

It'd almost make more sense as ICE fuel if we ran out of oil suddenly.

Eh, hydrogen isn't explosive enough to work that well in a piston engine (A couple of auto manufacturers have played around with it, with rather unimpressive results). Though turbines are always an option, at least if someone could design the exhaust so that it doesn't burn the paint off of the car behind you.

Cockmaster fucked around with this message at 17:01 on Aug 15, 2020

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