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rscott said:
Except the system mentioned takes 90 minutes to produce enough hydrogen to fill one vehicle..
This is rather the beauty of it. You have generator that takes 90 minutes to generate H2 and put it in a tank. The generator is probably expensive, tanks are cheap. So you size your generators to support average demand, and your tank to support peak demand.
From a tank, you can fill a car in 2 minutes. So, your “pump” can handle 20 or 30 cars an hour. You generate that hydrogen at a constant rate over time.
This is very different (and much more load friendly) than 20 EVs showing up, and all demanding 150 kW each, right now.
Hydrogen is a very tricky fuel to manage - I doubt there will ever be hydrogen networks. But local generation doesn’t seem to be a crazy idea. And while it is less efficient, you don’t need to make batteries.
rxe said:
rscott said:
Except the system mentioned takes 90 minutes to produce enough hydrogen to fill one vehicle..
This is rather the beauty of it. You have generator that takes 90 minutes to generate H2 and put it in a tank. The generator is probably expensive, tanks are cheap. So you size your generators to support average demand, and your tank to support peak demand.
From a tank, you can fill a car in 2 minutes. So, your “pump” can handle 20 or 30 cars an hour. You generate that hydrogen at a constant rate over time.
This is very different (and much more load friendly) than 20 EVs showing up, and all demanding 150 kW each, right now.
Hydrogen is a very tricky fuel to manage - I doubt there will ever be hydrogen networks. But local generation doesn’t seem to be a crazy idea. And while it is less efficient, you don’t need to make batteries.
However, this system takes a day to produce enough hydrogen to fill 16 cars and draws a max of 670kW to do so. So about the same as 4 EVs charging at the same time. Seems to me to be way less efficient than EV charging?
Well we’ve clocked up the first 2000 miles in the Nexo...
Absolutely faultless.
Except for the time I forgot to turn it off, walked away from expecting it to auto lock. Was surprised to see the retractable door handle still stuck out on the drivers door when I returned. Ah yes still ‘running’
It cost about £60 of hydrogen to do 300 miles.
If only they had installed a higher capacity battery into it, which could have been charged at a usual EV charging point. That would have been a fantastic solution and removed the range anxiety element until there are more fuelling stations.
Certainly attracts alot of attention.
Absolutely faultless.
Except for the time I forgot to turn it off, walked away from expecting it to auto lock. Was surprised to see the retractable door handle still stuck out on the drivers door when I returned. Ah yes still ‘running’
It cost about £60 of hydrogen to do 300 miles.
If only they had installed a higher capacity battery into it, which could have been charged at a usual EV charging point. That would have been a fantastic solution and removed the range anxiety element until there are more fuelling stations.
Certainly attracts alot of attention.
Edited by jimbouk on Monday 13th January 19:33
jamoor said:
Will hydrogen become cheaper over time or something?
Not for a long time if ever. They make most of it 'cheap' using natural gas, using electricity/electrolysis would cost more, and the fueling stations are complex and chunky hardware I doubt would get much cheaper over time jimbouk said:
If only they had installed a higher capacity battery into it, which could have been charged at a usual EV charging point.
Good to see it going well, but putting in a bigger traction battery that can be charged like a battery EV surely would just make this into another inefficient PHEV? Put a traction battery large enough to not need the onboard generator would just turn it into a 'normal' EV but with a hydrogen electricity generator....so a really expensive version of the old range extender i3. 
RobDickinson said:
jamoor said:
Will hydrogen become cheaper over time or something?
Not for a long time if ever. They make most of it 'cheap' using natural gas, using electricity/electrolysis would cost more, and the fueling stations are complex and chunky hardware I doubt would get much cheaper over time TX.
Kolbenkopp said:
SWoll said:
Great show. Binge watched the lot in 2 evenings with the wife. 
Same here ! Think it's CO2 budget well spent to at least visit Japan once. Gassing Station | EV and Alternative Fuels | Top of Page | What's New | My Stuff