Arthur Besse@lemmy.ml to Trains@lemmy.mlEnglish · 13 天前Two photos of the same train driver, taken 26 years apartlemmy.mlimagemessage-square63linkfedilinkarrow-up1327arrow-down18file-textcross-posted to: fuck_cars@lemmy.ml
arrow-up1319arrow-down1imageTwo photos of the same train driver, taken 26 years apartlemmy.mlArthur Besse@lemmy.ml to Trains@lemmy.mlEnglish · 13 天前message-square63linkfedilinkfile-textcross-posted to: fuck_cars@lemmy.ml
The two trains pictured: https://en.wikipedia.org/wiki/China_Railways_SY https://en.wikipedia.org/wiki/Fuxing_(train) More info about (and photos of) the driver, Han Junjia: https://global.chinadaily.com.cn/a/202012/28/WS5fe93034a31024ad0ba9ed9b.html http://en.people.cn/n3/2018/1205/c90000-9525433.html
minus-squareChronographs@lemmy.ziplinkfedilinkEnglisharrow-up4·13 天前Even accounting for that pretty sure it’s still wrong, that’s why ICE vehicles usually have better range despite not stuffing gas tanks into every available space.
minus-squareKindness is Punk@lemmy.calinkfedilinkEnglisharrow-up2·13 天前You know what that’s fair, I was speaking in a informal tense for which I should have avoided using technical terms to dissuade ambiguity
minus-squareleagman1@feddit.orglinkfedilinkEnglisharrow-up2·13 天前Imo it was clear what you mean if you apply any benefit of the doubt. But we’re on reddit, so they didn’t. (I know it’s not reddit, das de joke.)
minus-squareLeft as Center@jlai.lulinkfedilinkEnglisharrow-up1·13 天前It’s correct though. ICE efficiency in a car ~ 20% for a car, gas to wheels. Worst case scenario : diesel running to generate electricity (the engine stays at its efficient point): 45-50% battery efficiency to charge 85% battery to movement efficiency ~85% Electric cycle efficiency : ~33% You need to add ~15% overweight for EV, making a conservative 28% total cycle efficiency. It is definitely the energy density which makes the difference.
Even accounting for that pretty sure it’s still wrong, that’s why ICE vehicles usually have better range despite not stuffing gas tanks into every available space.
You know what that’s fair, I was speaking in a informal tense for which I should have avoided using technical terms to dissuade ambiguity
Imo it was clear what you mean if you apply any benefit of the doubt. But we’re on reddit, so they didn’t. (I know it’s not reddit, das de joke.)
It’s correct though.
ICE efficiency in a car ~ 20% for a car, gas to wheels.
Worst case scenario :
Electric cycle efficiency : ~33%
You need to add ~15% overweight for EV, making a conservative 28% total cycle efficiency.
It is definitely the energy density which makes the difference.