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Hyundai Nexo sets new world record 887.5 km travelled on single tank of hydrogen

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Re: Hyundai Nexo sets new world record 887.5 km travelled on single tank of hydrogen

#51

Post by WJW »

giantg2 wrote: post #36
KMnO4 wrote: post #12

Since “tank” isn’t a unit of measure, I suppose anyone could trivially break the record with a larger tank. From the article: > The Nexo consumed 6.27kg of H2 For comparison with the other production H2 cars: Toyota Mirai: 5.6kg Honda Clarity: 5.0kg Seems like a promising technology. My understanding is that the current blocker is infrastructure. It’s hard to pressurize up to 10,000 PSI, so many facilities are only a…

Hydride tanks don't require those high pressures. Other than nuclear arms treaties, is there a technical reason they don't use those instead?

That's a hell of a "Other than" you have there.

Re: Hyundai Nexo sets new world record 887.5 km travelled on single tank of hydrogen

#52

Post by contriban »

KMnO4 wrote: post #12

Since “tank” isn’t a unit of measure, I suppose anyone could trivially break the record with a larger tank. From the article: > The Nexo consumed 6.27kg of H2 For comparison with the other production H2 cars: Toyota Mirai: 5.6kg Honda Clarity: 5.0kg Seems like a promising technology. My understanding is that the current blocker is infrastructure. It’s hard to pressurize up to 10,000 PSI, so many facilities are only a…

> anyone could trivially break the record

"Make it bigger" doesn't really work in cars, otherwise range anxiety wouldn't exist as a concept.

The record still makes sense because the Hyundai Nexo is commercially available and it's not a prototype with a comically-large just for the record tank.

Re: Hyundai Nexo sets new world record 887.5 km travelled on single tank of hydrogen

#53

Post by Cthulhu_ »

cbolton wrote: post #38
timthorn wrote: post #19

Earlier quoted context omitted.

Hydrogen cars usually are electric cars. The main advantage to the owner is being able to fill the tank in minutes, and to society as a whole is being able to manage the H2 generation process to align with supply and demand on the grid.

If we're going to store energy by generating H2, is it more efficient to consume it in small cars rather than in big plants that convert it back to electrical power on demand?

I don't think the previous commenter meant converting it back; just that if there is an excess of power, e.g. on a sunny and windy day, that can be captured into H2 which is much easier to store than electricity. It wouldn't be converted back to electricity for the grid.

Re: Hyundai Nexo sets new world record 887.5 km travelled on single tank of hydrogen

#54

Post by bildung »

dagw wrote: post #43
bildung wrote: post #21

Earlier quoted context omitted.

Most people can't charge at home (because most people live in multi-story houses in a bigger cities and don't have a garage to charge in), so refueling in 2min at a gas station still has appeal.

I personally think we'll see charging poles next to most public parking spaces before we see a sufficiently built out network of H2 'gas stations'.

I think this underestimates the massive infrastructure investments those charging poles would need to work. I live in a medium density European town (about 1000 inhabitants/km2, think 4-5 story buildings on average). In residential areas the whole street is lined with parked cars on both sides. To charge these, one would need something like 1MW charging per every 4 cars, which means every 20m of the road, on both sides. So 1km of inner city street would have new electricity demands of about 100MW for fast charging.

Even overnight charging at say 10MW per km of road would mean the complete energy infrastructure of the complete town would have to be changed.

Edit: Inserted a line break before the last sentence because apparantly almost every replier overread that one :)

Re: Hyundai Nexo sets new world record 887.5 km travelled on single tank of hydrogen

#55

Post by jdblair »

Cthulhu_ wrote: post #49
jdblair wrote: post #31

Earlier quoted context omitted.

It depends on how you define convenient. Hydrogen can be refilled quickly, in minutes, like a conventional liquid fueled car. If there were a network of hydrogen filling stations then driving, especially long distances, would be similar to driving a liquid fueled car.

More like an electric car, if it's a hydrogen fuel cell car (I'm not sure if all hydrogen cars are that or if there's another variant that combusts the hydrogen)

Drives like an electric, refuels like a liquid fuel car (it uses a compressor, not electric charge).

Re: Hyundai Nexo sets new world record 887.5 km travelled on single tank of hydrogen

#56

Post by makomk »

throwaway316943 wrote: post #29
Keyframe wrote: post #15

Isn't driving on a tank full of hydrogen like super dangerous?

I shouldn’t think it’s much more dangerous than other pressurized flammable gases. Those pressure vessels are designed for safety contrary to what you see in movies. I’d be about as concerned as I am driving around with a tank of highly flammable gasoline.

Hydrogen forms explosive mixtures with air at a much wider range of concentrations than typical hydrocarbons and has a nasty tendency to permeate straight through a lot of materials.

Re: Hyundai Nexo sets new world record 887.5 km travelled on single tank of hydrogen

#57

Post by nojito »

teddyh wrote: post #27
MattRix wrote: post #16

What is the appeal of a hydrogen car vs an eletric car? The range appears to be similar, but being able to charge at home is so much more convenient.

I think it’s precisely that; with electric, there’s no special product to sell you. With hydrogen, or ethanol, the old oil and gas companies can more easily pivot into simply selling another chemical product. With electric cars, the oil and gas companies are like cable TV in the age of the internet; their days are numbered, and they fear it like nothing else. (Also, governments have nothing to levy special taxes on i…

100% electric cars isn’t feasible for countries like Japan

https://www.wsj.com/amp/articles/toyotas-chief-says-electric...

Re: Hyundai Nexo sets new world record 887.5 km travelled on single tank of hydrogen

#58

Post by [deleted] »

bildung wrote: post #54
dagw wrote: post #43

Earlier quoted context omitted.

I personally think we'll see charging poles next to most public parking spaces before we see a sufficiently built out network of H2 'gas stations'.

I think this underestimates the massive infrastructure investments those charging poles would need to work. I live in a medium density European town (about 1000 inhabitants/km2, think 4-5 story buildings on average). In residential areas the whole street is lined with parked cars on both sides. To charge these, one would need something like 1MW charging per every 4 cars, which means every 20m of the road, on both sid…

[deleted]

Re: Hyundai Nexo sets new world record 887.5 km travelled on single tank of hydrogen

#60

Post by alecmg »

Thlom wrote: post #46
spuz wrote: post #2

It's not quite clear from the article, but is this a stock Hyundai Nexo or was it modified to add more fuel tanks? The stock range of the car is 413 miles or 664km, so how exactly was this new record achieved?

Tesla record is over 1000 km, so at this point I'm not sure why anyone is interested in hydrogen for personal vehicles over electric.

We were getting 1000km between fill ups (60L tank) on a family road trip in a bog standard 1.8L gasoline (!) Ford Mondeo, seating 2 adults 2 kids and with trunk loaded to the brim and A/C running on full.

Really difficult to be excited or impressed by these "records". Both Tesla and H2

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