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Dutchy wrote:Hydrogen fills a need in the total energy landscape. Hydrogen isn't a fuel, it is a means of storage energy for middle long term. I see a future for hydrogen-fueled trucks, not normal cars.
frmrCapCadet wrote:Tesla will have real road experience with electric long distance trucks by this time next year. At least the ever optimistic tweeter has claimed.
ACDC8 wrote:The goal is to reduce the use of fossil fuels, if power comes from solar, wind, hydrogen, it doesn't matter - as long as it helps achieve the goal.
casinterest wrote:I think this article sums it up really well, what the big issue is, but much of what applies to hydrogen has a corollary in the fossil fuel industry.
https://electrek.co/2022/02/15/study-hy ... -vehicles/
The final issue thought will be in how we produce electricity.
Tugger wrote:I have argued "against" hydrogen often here (I'm not really against it just find it impractical compared to alternatives as casinterest points out). I think the one advantage it does have is energy density. Just like gasoline, energy stored as a liquid fuel had greater energy density that a battery plus relatively infinite recharge/refill ability.
However this just cannot overcome the need to distill it, transport it, and keep it supercooled and pressurized, which also makes it a hazard risk.
Tugg
c933103 wrote:cities and transportation vehicles are handling liquified LNGs absolutely fine.
Aesma wrote:Yeah but does it help ?
Aesma wrote:Long range trucking, I don't know. I'd say for starters that it shouldn't exist anyway, use trains, ships, boats on rivers...
Vintage wrote:c933103 wrote:cities and transportation vehicles are handling liquified LNGs absolutely fine.
LNG is stored under fairly low pressure similar to propane, however Hydrogen storage requires very high pressures, even beyond that of a scuba tank.
The maximum working pressure for LNG tanks is normally 250 psig or lower, with product stored at 50–120 psig.
https://www.sciencedirect.com/science/a ... 7504000979
Hydrogen can be physically stored as either a gas or a liquid. Storage as a gas typically requires high-pressure tanks (5000–10,000 psi).
(Storage of hydrogen as a liquid requires cryogenic temperatures)
https://www.energy.gov/eere/fuelcells/h ... e-basics-0
c933103 wrote:casinterest wrote:I think this article sums it up really well, what the big issue is, but much of what applies to hydrogen has a corollary in the fossil fuel industry.
https://electrek.co/2022/02/15/study-hy ... -vehicles/
The final issue thought will be in how we produce electricity.
Hydrogen can be stored and distributed is its advantage instead of disadvantage. Especially when it come to applications like aircraft I suppose. Batteries are much heavier and costly.
However there have been lacking R&D to push scale adoption of Hydrogen engine. I fear it will lose to battery electric the same way Plasma TV lost to LCD TV
casinterest wrote:c933103 wrote:casinterest wrote:I think this article sums it up really well, what the big issue is, but much of what applies to hydrogen has a corollary in the fossil fuel industry.
https://electrek.co/2022/02/15/study-hy ... -vehicles/
The final issue thought will be in how we produce electricity.
Hydrogen can be stored and distributed is its advantage instead of disadvantage. Especially when it come to applications like aircraft I suppose. Batteries are much heavier and costly.
However there have been lacking R&D to push scale adoption of Hydrogen engine. I fear it will lose to battery electric the same way Plasma TV lost to LCD TV
Storing and transport of hydrogen is expensive, and costs a lot of energy. The article points this out. It would need nationwide distribution to work, and with gas/diesel/lng already out there. I don't think we will see a lot of pick up.
c933103 wrote:Here, the gas company (LNG) already announced they will make existing gas infrastructure support refueling hydrogen
Assuming the same-sized ship, the delivered BTUs of energy would be about 27% of the LNG. This is because even liquified, hydrogen has less energy by volume than LNG, but also because liquifying hydrogen takes about 33% of the energy in the liquified hydrogen, as opposed to the 10% required for LNG
Tugger wrote:c933103 wrote:Here, the gas company (LNG) already announced they will make existing gas infrastructure support refueling hydrogen
I am positive that is only as a way to stay relevant in the "clean energy" world we are moving toward which seems to be ruling out LNG in the future. Also it would not be hydrogen really, rather a "hydrogen blend" as pure hydrogen is damaging to LNG infrastructure. Additionally hydrogen has a greater risk of leaks (which the embrittlement it causes makes worse)
https://kleinmanenergy.upenn.edu/news-i ... -turf-war/
Also hydrogen is less "energy efficient":Assuming the same-sized ship, the delivered BTUs of energy would be about 27% of the LNG. This is because even liquified, hydrogen has less energy by volume than LNG, but also because liquifying hydrogen takes about 33% of the energy in the liquified hydrogen, as opposed to the 10% required for LNG
https://cleantechnica.com/2021/12/20/sh ... of-energy/
As you see hydrogen has less that a third (27%) of the energy contained in LNG. Right now, ammonia is looking more like the "liquid fuel of the future" with ocean freight shipping actually already exploring and actively running ships on ammonia, which contains 33 percent of the energy of LNG but importantly does not require cooling to remain liquid.
https://maritime-executive.com/editoria ... gy-density
Hydrogen will be a niche fuel at best in the future.
Tugg
c933103 wrote:Tugger wrote:c933103 wrote:Here, the gas company (LNG) already announced they will make existing gas infrastructure support refueling hydrogen
I am positive that is only as a way to stay relevant in the "clean energy" world we are moving toward which seems to be ruling out LNG in the future. Also it would not be hydrogen really, rather a "hydrogen blend" as pure hydrogen is damaging to LNG infrastructure. Additionally hydrogen has a greater risk of leaks (which the embrittlement it causes makes worse)
https://kleinmanenergy.upenn.edu/news-i ... -turf-war/
Also hydrogen is less "energy efficient":Assuming the same-sized ship, the delivered BTUs of energy would be about 27% of the LNG. This is because even liquified, hydrogen has less energy by volume than LNG, but also because liquifying hydrogen takes about 33% of the energy in the liquified hydrogen, as opposed to the 10% required for LNG
https://cleantechnica.com/2021/12/20/sh ... of-energy/
As you see hydrogen has less that a third (27%) of the energy contained in LNG. Right now, ammonia is looking more like the "liquid fuel of the future" with ocean freight shipping actually already exploring and actively running ships on ammonia, which contains 33 percent of the energy of LNG but importantly does not require cooling to remain liquid.
https://maritime-executive.com/editoria ... gy-density
Hydrogen will be a niche fuel at best in the future.
Tugg
I am not aware of cooling facilities on the hydrogen bus just imported by bus company here.
frmrCapCadet wrote:Actually six rail lines going through the Rockies
CowAnon wrote:A hydrogen vehicle doesn't have to store H2 in a compressed or liquid form.
https://maritime-executive.com/article/ ... -amsterdam
The construction contract has been awarded for a hydrogen demonstration vessel that will use a new solid form hydrogen for propulsion that researchers believe will pave the way for a safer and broader application of hydrogen to fuel vessels. Known as Neo Orbis, the demonstration vessel is expected to start trials in June 2023 as the next phase in the multi-year European H2Ships program.
...
According to the project organizers, it will become the first ship in the world sailing on electricity, propelled with hydrogen in a solid form as the energy carrier. The fuel is made by mixing sodium borohydride powder with a stabilizer and ultrapure water into an aqueous non-combustible liquid fuel. The dissolved sodium borohydride reacts with a catalyst, producing hydrogen while the spent fuel is converted back to sodium borohydride. In the long term, the project envisions creating a closed system, by turning the residual materials into new sodium borohydride fuel.
I expect hydrogen cars to eventually win out over battery-powered cars, though it might take a few decades. Battery-powered vehicles are heavier, so they're more dangerous to pedestrians.
CowAnon wrote:A hydrogen vehicle doesn't have to store H2 in a compressed or liquid form.
https://maritime-executive.com/article/ ... -amsterdam
while a safety system monitors the concentration of hydrogen and automatically suspends the process well before a dangerous concentration level is reached.
casinterest wrote:I think this article sums it up really well, what the big issue is, but much of what applies to hydrogen has a corollary in the fossil fuel industry.
DocLightning wrote:casinterest wrote:I think this article sums it up really well, what the big issue is, but much of what applies to hydrogen has a corollary in the fossil fuel industry.
The problem with the energy efficiency argument is time. If I'm on a long road trip, I want to be able to get at least a half mile per second when I recharge. So if my car has a range of 450 miles and takes 5 minutes to fill with gasoline, then that's 1.5 miles per second. If my EV has a range of 150 miles, then I would like to be able to charge it in 5 minutes.
We're nowhere near that yet. But with hydrogen, the fill times are comparable to gasoline. I was hoping for a hydrogen infrastructure, but it doesn't look like I'm going to get it. Tesla had a good idea with rapid battery replacement, but again, we need industry standards and the infrastructure. Tesla couldn't make that model work.
Aesma wrote:Most people don't do road trips every day (or every month even). So if you lose some minutes here and there charging during road trips, but charge at home/work losing 0 time the rest of the days, are you really losing anything ?
Kiwirob wrote:DocLightning wrote:casinterest wrote:I think this article sums it up really well, what the big issue is, but much of what applies to hydrogen has a corollary in the fossil fuel industry.
The problem with the energy efficiency argument is time. If I'm on a long road trip, I want to be able to get at least a half mile per second when I recharge. So if my car has a range of 450 miles and takes 5 minutes to fill with gasoline, then that's 1.5 miles per second. If my EV has a range of 150 miles, then I would like to be able to charge it in 5 minutes.
We're nowhere near that yet. But with hydrogen, the fill times are comparable to gasoline. I was hoping for a hydrogen infrastructure, but it doesn't look like I'm going to get it. Tesla had a good idea with rapid battery replacement, but again, we need industry standards and the infrastructure. Tesla couldn't make that model work.
Battery replacement will work for trucks and busses, bus and truck chassis are fairly similar across brands which makes it easier ti standardise on the battery and battery placement, cars are a lot more difficult with the battery forming a structural part of the chassis, car chassis are not similar across the board, at best you will be companies like NIO who are championing battery away but only within their range.
Aesma wrote:Most people don't do road trips every day (or every month even). So if you lose some minutes here and there charging during road trips, but charge at home/work losing 0 time the rest of the days, are you really losing anything ?
casinterest wrote:Kiwirob wrote:DocLightning wrote:
The problem with the energy efficiency argument is time. If I'm on a long road trip, I want to be able to get at least a half mile per second when I recharge. So if my car has a range of 450 miles and takes 5 minutes to fill with gasoline, then that's 1.5 miles per second. If my EV has a range of 150 miles, then I would like to be able to charge it in 5 minutes.
We're nowhere near that yet. But with hydrogen, the fill times are comparable to gasoline. I was hoping for a hydrogen infrastructure, but it doesn't look like I'm going to get it. Tesla had a good idea with rapid battery replacement, but again, we need industry standards and the infrastructure. Tesla couldn't make that model work.
Battery replacement will work for trucks and busses, bus and truck chassis are fairly similar across brands which makes it easier ti standardise on the battery and battery placement, cars are a lot more difficult with the battery forming a structural part of the chassis, car chassis are not similar across the board, at best you will be companies like NIO who are championing battery away but only within their range.
https://insideevs.com/news/592360/megaw ... cs-launch/
We don't need battery replacement with Megawatt charging.
https://insideevs.com/news/535918/megaw ... ev-trucks/
3.75 Megawatt charging will make most systems ready to go in 15 minutes or so, and that is reasonable for breaks and other items
Kiwirob wrote:Repeated rapid fast charging is bad for batteries
ACDC8 wrote:Aesma wrote:Most people don't do road trips every day (or every month even). So if you lose some minutes here and there charging during road trips, but charge at home/work losing 0 time the rest of the days, are you really losing anything ?
Yes, on a road trip or family vacation, you only have a short period of time to accomplish the trip and delays can hamper what one wishes to accomplish - especially on this side of the pond where we're not blessed to have generous amounts of annual vacation.
When you only have one or two weeks for a trip, time is a very precious commodity let alone a weekend getaway.
Kiwirob wrote:Toyota is going a very good job testing ICE engines with hydrogen fuel, performance is excellent , far better than BMW manged with there project.
mxaxai wrote:Kiwirob wrote:Repeated rapid fast charging is bad for batteries
Road trips are hardly a daily activity for 99% of drivers. Most cars just go from home to work and back, maybe 10-20 miles each way, so you can go about 1-2 weeks without charging. That one road trip a year isn't going to kill the battery.
Aesma wrote:The US learning not to drive people that hard or they'll quit. I have hope for you.
mxaxai wrote:Kiwirob wrote:Repeated rapid fast charging is bad for batteries
Road trips are hardly a daily activity for 99% of drivers. Most cars just go from home to work and back, maybe 10-20 miles each way, so you can go about 1-2 weeks without charging. That one road trip a year isn't going to kill the battery.
Kiwirob wrote:A lot of people who live in apartments don’t have charging facilities at home they use fast chargers. A lot of people living in Europe and the UK don’t have there own parking space, they park on the street.
mxaxai wrote:Kiwirob wrote:A lot of people who live in apartments don’t have charging facilities at home they use fast chargers. A lot of people living in Europe and the UK don’t have there own parking space, they park on the street.
That's still only one fast charging cycle per week, which should give you at least 8-10 years of use without noticeable range decreases.
pune wrote:
Aesma wrote:[...]
I also expect many people to have qualms about hydrogen cars parked under their apartment building, office, etc.
Kiwirob wrote:Toyota is going a very good job testing ICE engines with hydrogen fuel, performance is excellent , far better than BMW manged with there project.
Aesma wrote:Not charging at home doesn't mean fast charging elsewhere. I can charge at work. I can charge at supermarkets, on some streets, at hotels, etc. Often these aren't fast chargers.
Aesma wrote:That's something that will never happen with hydrogen, incidentally.
Aesma wrote:I also expect many people to have qualms about hydrogen cars parked under their apartment building, office, etc.
M564038 wrote:VW to end fossil car sales in Norway next year.
M564038 wrote:Hydrogen came and went a few years ago, BTW, I don’t know why anyone’s still wastibg their time on fantasizing about it.