I cannot understand the future use case of hydrogen locomotives. Who even funded this thing.
this post was submitted on 17 Sep 2023
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Fills up in a comparable time span as diesel locos, and the hydrogen storage would be much lighter compared to equivalent battery storage. No need for an onboard AC/DC generator for the traction motors too, as would be the case if it was diesel powered.
To me it seems like an ideal diesel loco replacement
I assume it will be hauling cargo, not passengers...
Weight is usually a feature for locomotives, which are sometimes ballasted for extra traction.
Occasionally you see extra-lightweight engines designed for light infrastructure-- often putting the same guts on more axles to lower the load, but it's rare.
Modern locomotives also use AC traction motors, with sophisticated computer controls to generate an AC product suitable for the desired speed and torque. Even modern diesel-electric designs have alternators and AC internals. Yes, some old electric engines were huge rectifiers on wheels, but that's no longer necessary.
Electrification is a very "capitalism won't let us have nice things" problem; it's a 25 year commitment to infrastructure and new engines before it pays full benefits (higher reliability, simpler equipment, higher horsepower per unit, using dynamic braking to return power to the grid)
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Why not?
Batteries can't keep nearly as much power in a space as burnable fuel can, it's just physically impossible because the oxygen you add to fuel gives it a far higher energy density where batteries need the oxygen built in.
Something like a locomotive also needs an absolute shit ton of power to pull the trains they pull, so you're going to have a lot of difficulty and it's going to be pretty expensive running high voltage lines across these railroads.
Hydrogen, because of railroad can easily control the infrastructure and fill up a train, run it right away, and refill it at its destination, could actually be a pretty viable option
You got any idea of the energy density of Hydrogen? On a per m3 basis, batteries hold a lot more energy.
BTW, hydrogen doesn't get burned.
you’re going to have a lot of difficulty and it’s going to be pretty expensive running high voltage lines across these railroads.
It's worked just fine for the past century
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Would this be a viable option for cruise or cargo ships as well?
Not a very good one.
Hydrogen density is too low, there is more hydrogen in things like ammonia or methanol. All of these are potential solutions to fossil bunk fuel or LNG, but all have issues and there is no clear winner yet.
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