A…waste of solar…internal ICE hydrogen motors is what these would be used for not fuel cell hydrogen.
How are you wasting solar? Lol this makes no sense. These can be stood up anywhere, you cannot use these as super chargers for batteries…
That is a waste of solar. It’s more efficient to put in batteries then kinetic. If there is no more batteries to put it in, you transmit the power over wires.
With hydrogen it’s wasteful to create from electricity, then wasteful to turn into kinetic. Its wasteful to store as it’s the smallest atom so escapes easily, it’s low density so needs compressing. Then, to move it, you have to move storage around instead of just transmit over wires.
SupraMario@lemmy.world 9 months ago
frezik@midwest.social 9 months ago
Because you can put that electricity directly into the grid rather than wasting it making hydrogen.
SupraMario@lemmy.world 9 months ago
Lol that’s not the goal, the goal is to charge a car… you’re finding a problem to solve that’s not even in the same area…
frezik@midwest.social 9 months ago
You can use electricity on the grid to charge a car. Not sure if you were aware of that. It’s going to be a whole lot more efficient at it than hydrogen.
jabjoe@feddit.uk 9 months ago
Look at the efficiency of the energy conversions. It is literally wasting solar.
SupraMario@lemmy.world 9 months ago
How is it wasted if it completely free energy? You cannot charge up electric cars quickly via solar…hell solar in general isn’t super efficient anyways lol
jabjoe@feddit.uk 9 months ago
No energy is free because there is always installation and maintance cost. Lot’s of people change their cars off solar. Most of a car’s life is sat parked for hours. So slow is fine. My charger has a solar divert function I’m yet to get the solar for. Also, you change a house battery slow and then a car fast from it. Even here in the UK there are people doing it. Not solar all the time, but a lot in summer. House battery changed when your in the office, car overnight from that.
nekusoul@lemmy.nekusoul.de 9 months ago
Exactly. And just to be clear, because it’s annoying me every time people gloss over this, it’s not just some percentage points lost in the conversion of energy, it’s actually ~75% of the energy that goes to waste, from energy production to the final motion of the wheels. EVs on the other hand only waste ~25% of energy. Even with the wishful thinking that the hydrogen can just be created in times of energy overproduction, you can’t beat a factor of 3.
jabjoe@feddit.uk 9 months ago
Yep. H2 cars are pushed by the ignorant or the corrupt (oil money).
SupraMario@lemmy.world 9 months ago
Hydrogen is basically free energy though. Using solar to pull it from the atmosphere and then it goes in an ICE motor. Stations like these can supply hydrogen basically anywhere without needing to run wires to it. Providing fuel to ICE powered hydrogen cars.
nekusoul@lemmy.nekusoul.de 9 months ago
It’s not free though. There’s such a thing called ‘opportunity costs’: If I have the choice between a ‘free candy machine’ that spits out one candy every hour, and one that spits out three candies every hour, I know what I’ll choose.
I also wasn’t aware you ware talking about ICE powered hydrogen cars, where the efficiency is even more comically abysmal.
SupraMario@lemmy.world 9 months ago
Cool your candy machine requires 10xs the investment and maybe even more because supercharger stations need substations near them. They can’t run on a 400amp box.
frezik@midwest.social 9 months ago
You know that 75% loss of energy the GP mentioned above? That’s for hydrogen fuel cells, not hydrogen ICE. It’s even worse for ICE. Why the hell would we do that rather than putting that solar directly on the grid?
SupraMario@lemmy.world 9 months ago
Because you can drop one of these and fuel hydrogen ice cars in the middle of nowhere. You can’t do that with solar and superchargers , they require substations.
Sounds like all of you people live in the city. Figures how ignorant you all are, the USA is massive people don’t just live in apartment blocks in walking distance of their jobs and stores.
jaemo@sh.itjust.works 9 months ago
This is crackpottery and your repeatedly re-posting this assertion without citing anything isn’t really supporting your position.
Yes, yes, electrolysis is a thing.
No, it is not free.
FFS if you’re going to go for crazy theories why not dream big: here is a potential paint we could research for a few megacredits and buff our science to coat our walls and make hydrogen with. For not free but cheaper than electrolysis.
jabjoe@feddit.uk 9 months ago
Right now, it doesn’t seam like we energy to waste. Not until all the energy is clean. Also, it’s always going to be cheaper to use a lot less energy. Until energy is free, which it isn’t even with renewable because of install cost and maintainance cost.