Hypx

21 ms·

181.
by Hypx 6y ago
Not actually true. H2 is found naturally, although we don't have an good assessment how much exists or whether there are significant deposits.
182.
by Hypx 6y ago
> The infrastructure has no multiple use, unlike improvements to the grid. You need hydrogen for steel production, ammonia, and synthetic hydrocarbon production. Likely cement, glass, and plastic production too. > So why not just do f
183.
by Hypx 6y ago
Fuel cells are too heavy, at least for the time being. Other than biofuels or synfuels, there's basically no alternatives. Aviation companies will have to pick one of those fuels.
184.
by Hypx 6y ago
https://www.cnbc.com/2018/08/18/elon-musk-tesla-could-produc... This is not a new claim. Take it with a grain of salt.
185.
by Hypx 6y ago
Battery energy density hasn't moved much at all. At best, we're at around 270-280 Wh/kg, and that requires a huge departure from our early understanding of battery safety. The early BEVs were relatively safe, even in a severe
186.
by Hypx 6y ago
Cost is just the standard economies of scale. Going from MWh of battery storage to GWh of battery storage will produce those cost reductions. Li-Po batteries had had 20C discharge rates for many years. Nothing is really unexpected or breaki
187.
by Hypx 6y ago
At some point you just accept that hydrogen is a battery technology with the highest possible energy density and give up on silly in-between ideas.
188.
by Hypx 6y ago
To be fair, hydrogen is one of those "mythical" power sources. It just happens to be the one that is becoming viable in the short-term and is not dependent on some future discovery.
189.
by Hypx 6y ago
None of it has produced anything or has produced minimal gains. Seriously, look at the rate of actual improvement. Li-NCA existed more than a decade ago. Since then the best batteries have barely gotten better. Peak energy density has moved
190.
by Hypx 6y ago
You need a lot of metal, especially if you want a big battery. Realistically we're not going to see batteries much cheaper than what we have now. Hydrogen is likely to be cost of green energy plus some additional cost factor. So if sol
191.
by Hypx 6y ago
If their software is dependent on the ARM ISA then they can't.
192.
by Hypx 6y ago
I see batteries not getting much cheaper at all, and likely hitting some plateau in cost reductions. It wouldn't surprise me if it is followed by cost increases as demands for sustainable production and recyclability increase. Hydrogen
193.
by Hypx 6y ago
Batteries are likely reaching the end of their progress. Chances are there are no meaningful improvements left in batteries without some kind of major breakthrough.
194.
by Hypx 6y ago
> Battery technology is improving at a far faster rate then hydrogen technology, its not even remotely close. By the time your predicted ' (1, maybe 2 iterations away)' happens, batteries will have made 5 iterations. I'm c
195.
by Hypx 6y ago
FCEVs are the future. BEVs are a temporary stopgap.
196.
by Hypx 6y ago
All "profits" come from regulatory credits. Even then, there's plenty of aggressive accounting going on. It's arguable Tesla has never been profitable and still isn't.
197.
How do we move around in a zero-carbon world?(gatesnotes.com)
1 points by Hypx 6y ago|0 comments
198.
by Hypx 6y ago
Instead it just explodes when exposed to water or air...
199.
Microsoft used hydrogen fuel cells to power a data center for two days straight(engadget.com)
1 points by Hypx 6y ago|0 comments
200.
by Hypx 6y ago
Agreed. Nearly every AI startup or idea has disappointed or failed. We’re spending the equivalent of billions of dollars on something dumber than a rat in most cases.
201.
by Hypx 6y ago
Synfuels are not a drop-in replacement. Jet-A has exacting standards, and it would be a serious chemistry challenge for synfuels to match Jet-A exactly. Most likely it would be possible but very costly. Most of that stuff is engineering sup
202.
by Hypx 6y ago
Synfuels are made using H2 and CO2. In practice, they're just H2 with more steps. So while you can use them, it ends up being a trade-off between cost and how much you really need synfuels.
203.
by Hypx 6y ago
But Apple already controls its own chips in the sector that matters to them: mobile. Shifting to ARM for laptops and desktops just sounds like a big burden for them.
204.
by Hypx 6y ago
You should at least bring up the story of Max Planck in the late 1800s. He was basically told not to enter physics, because supposedly nearly all of physics has already been discovery. We know what came next in physics. We don't know t
205.
by Hypx 6y ago
The problem you're missing is cost of production: A hydrogen car fundamentally should cost no more than gasoline powered car, and will have a similar range. With batteries, you'll always be limited in range to some extend, and cos
206.
by Hypx 6y ago
It's a long shot because it's a bad idea. It's fundamentally no different than pumped hydro, but much more complicated. I don't think there's any chance such ideas can work out.
207.
by Hypx 6y ago
Good luck retrofitting the hundreds of thousands of apartments and condominiums out there.
208.
by Hypx 6y ago
Since until recently no one has even bothered in the investing in the technology. How can you be sure there are all these problems if you haven't even tried?
209.
by Hypx 6y ago
It's unfortunate people don't realize this doesn't scale. If everyone at your 300 unit condo had a BEV, this doesn't work.
210.
by Hypx 6y ago
Electrolysis is much cheaper than in the past. Nearly all serious hydrogen related proposals involves electrolysis.

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