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At least the same amount of energy is required to "un-burn" CO2 as is released burning it up in the first place. Even if you do it cheaply with solar energy, t
by danuker 4y ago
At least the same amount of energy is required to "un-burn" CO2 as is released burning it up in the first place.
Even if you do it cheaply with solar energy, the energy might be better used directly.
- phkahler 4y agoThat's why using this to create methanol as a fuel is would be pointless. Hence the question about the size of market for methanol. Similarly there would be no point in using this to produce methanol for use in fuel for cars.
- wrycoder 4y agoThe argument would be about whether it's a better plan to 1. Power cars with batteries charged from the grid or use 2. "Green" hydrogen, i.e. from cracking H2O with solar, or use 3. Synfuel derived from CO2 and green hydrogen, i.e. using the synfuel as a "battery", the output being CO2 and H20 again.
- worik 4y agoStorage and transport of otherwise inaccessible energy is the point, surely?