☆ Yσɠƚԋσʂ ☆@lemmy.ml to Technology@lemmy.mlEnglish · 1 month agoChina, leader in EVs, could overtake the world in hydrogen mobility tooetn.newsexternal-linkmessage-square6fedilinkarrow-up112arrow-down12
arrow-up110arrow-down1external-linkChina, leader in EVs, could overtake the world in hydrogen mobility tooetn.news☆ Yσɠƚԋσʂ ☆@lemmy.ml to Technology@lemmy.mlEnglish · 1 month agomessage-square6fedilink
minus-squareChaoticNeutralCzech@feddit.orglinkfedilinkEnglisharrow-up8arrow-down1·1 month agoDoes not matter, hydrogen is not really the future
minus-squareScott@lem.free.aslinkfedilinkEnglisharrow-up5·edit-230 days agoWe don’t have any “green” hydrogen source at the moment. Hydrogen generation, currently, still releases carbon. Hydrogen “engines” are only ~40% efficient compared to, say, BEVs that are ~80% efficient.
minus-squareMac@mander.xyzlinkfedilinkarrow-up4·edit-21 month agoIt’s important to look, not only at the vehicle, but at the energy efficiency of the system as a whole. Well-To-Wheel it’s referred to as. Gasoline: ~20% Diesel: ~30% H Fuel Cell: ~25% BEV (fossil power): ~20%* BEV (renewable): ~55%* *BEV is highly dependent on energy source. Anwhere from ~20% WTW from natural gas power generation to 75% from roof-mounted solar. Keep in mind this is a summary of a summary of a summary. Sources: https://www.researchgate.net/publication/344860096_Comparison_of_the_Overall_Energy_Efficiency_for_Internal_Combustion_Engine_Vehicles_and_Electric_Vehicles https://c2e2.unepccc.org/wp-content/uploads/sites/3/2019/09/analysis-of-hydrogen-fuel-cell-and-battery.pdf https://yaleclimateconnections.org/2022/08/electrifying-transportation-reduces-emissions-and-saves-massive-amounts-of-energy/
minus-squareChaoticNeutralCzech@feddit.orglinkfedilinkEnglisharrow-up1·1 month agoYup, that’s the problem.
minus-square☆ Yσɠƚԋσʂ ☆@lemmy.mlOPlinkfedilinkarrow-up1arrow-down1·1 month agowe absolutely do have green hydrogen at the moment https://rmi.org/insight/chinas-green-hydrogen-new-era/
Does not matter, hydrogen is not really the future
We don’t have any “green” hydrogen source at the moment. Hydrogen generation, currently, still releases carbon.
Hydrogen “engines” are only ~40% efficient compared to, say, BEVs that are ~80% efficient.
It’s important to look, not only at the vehicle, but at the energy efficiency of the system as a whole.
Well-To-Wheel it’s referred to as.
Gasoline: ~20%
Diesel: ~30%
H Fuel Cell: ~25%
BEV (fossil power): ~20%*
BEV (renewable): ~55%*
*BEV is highly dependent on energy source. Anwhere from ~20% WTW from natural gas power generation to 75% from roof-mounted solar.
Keep in mind this is a summary of a summary of a summary.
Sources:
Yup, that’s the problem.
we absolutely do have green hydrogen at the moment https://rmi.org/insight/chinas-green-hydrogen-new-era/