Comment on Japan automakers play catch-up in EV race
WallEx@feddit.de 1 year agoYou say that while promoting the idea of more inefficient energy transfer systems. Electric motors operate above 90%, traditional motors around 25-30%. Try to mitigate that with wasting more energy by creating an artificial fuel is even more wasteful.
Hypx@kbin.social 1 year ago
Solar panels are only 15-20% efficient. No one is going around saying we need to ban solar panels.
Fuels made from solar power are the opposite of unsustainable. They are the most sustainable ideas possible. It is basically artificial photosynthesis.
Honytawk@lemmy.zip 1 year ago
We don’t make fuels from solar power.
Unless you mean hydrogen, which by itself is already 30-40% less efficient then just using the electricity directly in a battery.
And that is without counting all the hydrogen that just escapes through any form of containment we try to keep it in.
Hypx@kbin.social 1 year ago
Hydrogen is a fuel. E-fuels are hydrogen plus CO₂ and converted into synthetic hydrocarbons.
You are blatantly ignoring the part where solar power is incredibly inefficient to begin with, and we don't care. It's still cheap energy.
PlatinumSf@pawb.social 1 year ago
You’re confusing the efficency of solar panels with the efficiency of burning hydrocarbon based fuel (perhaps intentionally?). Yes, solar panels convert about 20-30% (they’re getting better with time) of the energy provided by mankind’s closest and most beloved fission reactor into energy we can use, the rest being reflected or turned into heat, but the source (that giant ball of fission) is infinite and non-detremental to the environment to keep running. Hydrocarbon production not only requires this original source but once calculated would provided you end delivery efficency levels that are dramatically lower (likely less than 1%), Natural hydrocarbons are limited in supply, and the whole chain is significantly more toxic for the planet when you calculate in byproducts produced during production or consumption. It’s legitimately not even close and if you truly believe hydrocarbons are even remotely viable you’ve misinterpreted one of the data points somewhere in your calculation.
WallEx@feddit.de 1 year ago
Where is the comparison to the solar panel? I’m comparing methods of propelling, you are comparing solar panels and?
If you can use the energy more efficiently and choose not to it’s not sustainable (or at least not very smart)
Hypx@kbin.social 1 year ago
Because it is solar power ultimately powering it all. If you don't care about the efficiency of that step, you don't really care about all of the later steps. It is still green energy and still cheap.
The problem with BEVs is that while it is efficient in one respect, it is insanely wasteful in others. As a result, it is an unsustainable idea and functionally just greenwashing.
WallEx@feddit.de 1 year ago
So it’s the same if you have to build 5 times as many solar panels to do the same thing? It’s just not.