☆ Yσɠƚԋσʂ ☆@lemmy.ml to Technology@lemmy.mlEnglish · 9 hours agoChina, leader in EVs, could overtake the world in hydrogen mobility tooetn.newsexternal-linkmessage-square5fedilinkarrow-up111arrow-down11
arrow-up110arrow-down1external-linkChina, leader in EVs, could overtake the world in hydrogen mobility tooetn.news☆ Yσɠƚԋσʂ ☆@lemmy.ml to Technology@lemmy.mlEnglish · 9 hours agomessage-square5fedilink
minus-squareChaoticNeutralCzech@feddit.orglinkfedilinkEnglisharrow-up6·6 hours agoDoes not matter, hydrogen is not really the future
minus-squareScott@lem.free.aslinkfedilinkEnglisharrow-up5·5 hours agoWe don’t have any “green” hydrogen source at the moment. Hydrogen generation, at the moment, still releases carbon. Hydrogen “engines” are only ~40% efficient compared to, say, BEVs that are ~80% efficient.
minus-squareMac@mander.xyzlinkfedilinkarrow-up2·edit-23 hours 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-up2·4 hours agoYup, that’s the problem.
Does not matter, hydrogen is not really the future
We don’t have any “green” hydrogen source at the moment. Hydrogen generation, at the moment, 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.