Quote:
Originally Posted by nelbur
It is totally magical. The exhaust from your diesel is primarily CO2 and water. With enough energy the exhaust could be turned back into fuel, but it would take more energy than you got out by burning the fuel in the first place. In fact, since the efficiency of an engine is about 50% it would take at least twice the energy. The point is that no one is going to turn CO2 into diesel fuel on a commercial scale, even if CO2 were free. This is the same sort of nonsense as using water for fuel, another exhaust product.
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Oh Yee Of Little Faith...
You are overlooking the fact that when totally green energy is available.. the amount of energy needed to do it makes no difference.
Totally green energy at any one place is when the initial investment has been paid off . It is totally gravy and very important for the future . This is particularly important because liquid fuel is needed for some applications...