well 40*50 is 2,000, so minimally cut it in half.
now a factor of 5 - i'll have to look more.
it is a large weight reduction, but i'm not sure that is enough to explain it
from a range POV - since the calc was energy.
Cars, it's electric! Do Do Do
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well 40*50 is 2,000, so minimally cut it in half.
now a factor of 5 - i'll have to look more.
it is a large weight reduction, but i'm not sure that is enough to explain it
from a range POV - since the calc was energy.
rick81721
Lothar
The problem is your tesla battery number - their ~ 1000 lb battery pack is 100 KwH, not 1000. If it was 1000 (at the same weight) , a Tesla would have a range of over 3000 miles on one charge!
one piece crank
Well-Known Member
See, this is all good discussion. I'm not anti-BEV, but I do believe BEV's a the car makers' solution. IMO it's not the right solution, or a good solution, just a stop-gap at best. I'm already tired of all these great batteries, and they haven't even started to pile up at recyclers.
Propane is a liquid at that pressure - transports well.
H2 is never a liquid at any normal temp.
Delivering LP or LNG to the H2 generating plant makes sense tho.
(i think? pipelines work well as long as NIMBY)
going back to the 125l/5kg example from Rick -
Let's cut the battery pack by 75%, and cut the H2 "vessel" by 50% -
A 25% penalty in range without correcting for significant weight reduction.
62l is about 16gallons? the tank a little over 2 cuft would do it.
maybe 9" round, 4' tall + the wall of the tank, and ya can't run it to 0, so whatever that it.
hell, use two smaller tanks! wait, make the size of the tank holder variable!
Then just pick the right tank.
Where are my investors!
rick81721
Lothar
What are you trying to solve here? FCEVs already have two tanks - gotta be cylinders or spheres with those pressures - but cylinders make more sense:
More fun to figure it out.
i checked, and the tanks weigh about 80lbs.
so they should have the ability to add more and get rid of the back seat.
rick81721
Lothar
So extending the range? If there's not many H2 stations around that would make sense
not sure ya need extra electrons -
H2 gladly turns into H20
but getting back to my fusion reactor.......yeah!
bucknejo
Well-Known Member
this one should get you 1.21 gigawatts. not sure where or when that gets you range-wise.
rick81721
Lothar
I'm not paying $7/month to read this but maybe some here has a subscription. Title is: Hydrogen is not a Fuel, it's a Cult
https://www.forbes.com/sites/jamesmorris/2021/12/11/hydrogen-is-not-a-fuel-its-a-cult/
https://www.forbes.com/sites/jamesmorris/2021/12/11/hydrogen-is-not-a-fuel-its-a-cult/
rick81721
Lothar
Haha all isotopes of hydrogen have 1 electron. The heavier isotopes have additional neutrons
hmm - that explains my college chemistry grade.
rick81721
Lothar
You'll need deuterium for your fusion reactor tho
And just like that....
www.cnbc.com
United Airlines plans to purchase up to 100 hydrogen-electric engines
Discussions around aviation are increasingly focused on how new tech could cut its environmental footprint.
rick81721
Lothar
And just like that....
United Airlines plans to purchase up to 100 hydrogen-electric engines
Discussions around aviation are increasingly focused on how new tech could cut its environmental footprint.
Seriously, hydrogen could work for centrally-hubbed mass transit like aircraft. Tho gotta think this engine will be heavier than a turbofan.
rick81721
Lothar
And here's a floating version of that solar/hydrogen powered house posted earlier. Slow as molasses tho 😄
https://newatlas.com/marine/aquon-one-solar-hydrogen-yacht/
https://newatlas.com/marine/aquon-one-solar-hydrogen-yacht/
rick81721
Lothar
But more fuel required for the same power plus additional weight of pressurized gas tanks. And what's the power output of an electric prop engine vs a turbofan? This will only work for short-range commuter flights.
Energy problem
They aren't breaking the sounds barrier so large props work. They also have high torque so low RPM is Ok.
Probably could not store enough for long haul