5 ms·
Wait till you hear about the efficiency of petrochemicals... "In other words, even when the engine is operating at its point of maximum thermal efficiency, of
by sdenton4 4y ago
Wait till you hear about the efficiency of petrochemicals...
"In other words, even when the engine is operating at its point of maximum thermal efficiency, of the total heat energy released by the gasoline consumed, about 65-80% of total power is emitted as heat without being turned into useful work, i.e. turning the crankshaft."
https://en.m.wikipedia.org/wiki/Engine_efficiency#:~:text=in%20more%20drag.-,Gasoline%20(petrol)%20engines,used%20to%20power%20a%20car https://en.m.wikipedia.org/wiki/Engine_efficiency#:~:text=in....
- whatshisface 4y agoHydrocarbons would also be a bad alternative to batteries for grid energy storage.
- PaulHoule 4y agoDispatchable energy sources already compete with grid storage, in fact they have been dominant for the last 100 years.
- gambiting 4y agoSure, but producing 1kWh worth of petrol doesn't require 1kWh of energy. Producing 1kWh worth of hydrogen through electrolysis always requires more than 1kWh of energy, it's just pure physics. Even if the process was 100% efficient through magic, it's still a stupid thing to rely on for producing hydrogen.
- deleted 4y ago[deleted]
- jameshart 4y ago> producing 1kWh worth of petrol doesn't require 1kWh of energy … so long as you don’t count the 1kWh of photosynthesis that was done by a bunch of ancient plankton to rip CO2 molecules apart and build hydrocarbons instead.
- gambiting 4y agoWell yes, of course. But it's not energy that we have to spend now, unlike with hydrogen.
- taneq 4y agoProcessing fossil fuels takes less energy than producing new ones? Shocked.