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Here We Go Again.
Byline: KEVIN WILSON
I just explained to another smart friend why the guy with the car that runs on wateryou've probably seen the video in endless e-mail circulation, where he first uses a torch and then shows a car running on the same gas (hydrogen and oxygen) from electrolysis of wateris not the magic solution to oil at $135 per barrel.
The video, a vapid bit of local TV "journalism,'' is ignorant junk. The reporter never asks how much electricity is needed to split the water into hydrogen and oxygen. More energy goes in than you get outsimple physics. The economic question is, how much more?
Whenever we move energy from one form to another, there's a loss. We do it to get a more portable or useful formcoal in the ground or water behind a dam becomes electricity, charges a battery, but 100 percent efficiency is an unrealizable ideal. There's lots of waste between the oil fields and the moment a gasoline-powered car's wheels turn. So that alone isn't an argument against hydrogen in cars (or else the fuel-cell notion would be just smoke and mirrors, too).
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Source: HighBeam Research, Here We Go Again.