Saturday, January 12, 2013

Making petrol out of fresh air?

Can anyone spot the flaw in this plan?

http://www.aljazeera.com/indepth/features/2013/01/2013110111039373166.html

Hint: The amount of energy extracted from the petrol it produces will be less than the amount of energy in the electricity which will be added to produce it. And where will the electricity come from? Burning coal.

But in our fantasy world, will anyone care?

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