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View Full Version : For the physicists and engineers -- Water to fuel



Jim3k
06-14-2008, 07:12 PM
Given the ridiculously high price of gasoline, there are a number of alternative fuel proposals (and possible scams) floating out there.

One of the suggestions is the application of HHO gas to supplement gasoline. These things come in a kit (or are home-made). Using some form of electrolysis, they separate a water atom into 2Hs and 1O, HHO (though from highschool chemistry, I recall that and H is an H in gaseous form -- not sure why it would be HH, whic means two Hs combined). Anyway, the stuff burns.

These devices supposedly boost mileage by as much as 20%. If so, that would be a boon to drivers everywhere.

My question: Is any of this true? Can it work? Can it work effciently enough to warrant converting a car?

Or, do the laws of thermodynamics get in the way? I know some energy is needed to convert the water to a usable gas. But would create enough hydrogen to actually boost anything? IIR from high school, you could get some hydrogen in a jar and make it go 'poof!' but the amount was so small that it wasn't anything more than a curiosity. I mean, how much hydrogen can be gotten from a quart of water, anyway?

Plus, in a car, you'd have to control the hydrogen-gasoline mixture. Wouldn't there be temperature issues as well? And how much of a mileage boost can there be with such small quantities of hydrogen?

So...Is any of this stuff real?

Karl Beem
06-14-2008, 08:15 PM
HHO is H2O or water. 2H2 + O2 + a spark -> 2H20 + lots of energy. This is a very exothermic reaction. Thus the reverse 2H20 -> 2H2+ O2 is very endothermic. You must supply the energy, usually in the form of electricity. In the real world. you would have to supply more energy than you would get out. I believe in Stargate : SG1, they would sometimes tap an energy source in an alternant universe. That's one way this could work. Passing aliens converting the Moon into a big honking battery with broadcast power would be another.

CameronBornAndBred
06-14-2008, 09:48 PM
I don't know the answer to your question, but I saw this today. It's a car in Japan that runs on water. (http://www.liveleak.com/view?i=1d3_1213481557&c=1#comments)

hc5duke
06-15-2008, 03:02 AM
I don't know the answer to your question, but I saw this today. It's a car in Japan that runs on water. (http://www.liveleak.com/view?i=1d3_1213481557&c=1#comments)

"Test vehicle" meaning this car doesn't actually run on water. I don't know if I'd go as far as calling this company scammers, but I don't believe this video one bit. Just because you put a couple of bumper stickers on doesn't make your car run on water.

Fish80
06-16-2008, 09:40 AM
Passing aliens converting the Moon into a big honking battery with broadcast power would be another.

Okay, I'll bite. How would aliens convert the moon into a battery?

Karl Beem
06-16-2008, 10:15 AM
Okay, I'll bite. How would aliens convert the moon into a battery?

Alien tech is beyond my ken.:)