cathy8862 asked:

Since hydrogen is a good fuel for vehicles , why water cannot be used as a ‘ fuel ‘ in vehicles? Why can’t the vehicle break up the water molecule (which consists of 2 hydrogen atom & 1 oxygen atom) and use the hydrogen atom for burning and emit oxygen into the atmosphere ?



15 Responses to “why water cannot be used as a ‘ fuel ‘ in vehicles?”

  1. JM on March 1st, 2011 1:13 pm


    Well, there are hydrogen burning cells that take hydrogen and oxygen from the atmosphere, and pure water being the exaust product. There is also a way someone (I forget who and where) found out how to use water as a fuel by turning it into HHO, and then burning it.

  2. birdbayboy on March 2nd, 2011 3:26 pm


    Water is actually the “fuel” in steam engines.

  3. lostlyrics on March 3rd, 2011 9:04 pm


    it takes more energy to break up the bindings
    of hydrogen in water, than you gain from burning.

  4. kidnash on March 5th, 2011 10:45 am


    It could probably be the engine of the future, by breaking the hydrogen and oxygen atom of water then an energy released. It is not really probably well researched yet or if it is functional already in some laboratory, it maybe too costly to make it commercial. (Or the Oil Companies paid those who created it not too make it public trillions of dollars in Gas Business will be in jeopardy – just a thought also)

  5. enders_shadow90 on March 6th, 2011 1:55 am


    The hydrogen and oxygen are bonded and It takes alot of energy to break up the hydrogen atom and the oxygen atoms. It takes more energy to un bind them than burning that hydrogen atom generates. Maybe one day we will find a way to unbind the atoms cheaply and water will be a great source of energy. Even greater than it already is.

  6. crabby_blindguy on March 7th, 2011 7:26 am


    God question. Here’s why that wont’t work”

    The water molecule contains 2 hydrogen atoms and one oxygenatom. You have to put a certain amount of energy in to break the hydrogen off of the oxygen atom. Now, assuming you have an engine that can do that (not easy, but assuming you did).

    Here’s the catch–when you use hydorgen as fuel, thisis done by burning it with oxygen—-and the energy you get back out is only as much as you put in to break the oxygen and hydrogenapart in the first place–so you end up right back where you started, with no energy left over to move the car.

    That’s with a perfectly effiicient system–which it won’t be; it takes some energy to run te process.

    So–there is no way, even in principle, to get any net energy out of the water to run the car. Hydrogen is a greatfulel–but you have to produce the hydrogen first to use it effectively as a fuel in an automobile–and that may be a practiclal technologgy–that’s essentially what a hydrogenfuel cell is.

  7. Sciencenut on March 8th, 2011 12:32 pm


    When you burn gasoline in your car, the major end product is steam, or water. This cannot be further burned to get more energy. It is technically an “ash” or a product of combustion. It would be like heating your house by burning wood ashes. I don’t think you could get them to catch on fire, because they have already given up all of their energy. If you split water to Hydrogen and Oxygen, that requires an input of energy to make it happen, and you get that energy back when you burn the resulting hydrogen fuel. The main goal of photosynthesis is to use sunlight to split water molecules. When you burn up a plant, the energy released by the burning originally came from the sun, i.e.sunlight. I hope this helps.
    P.S. Unless you are talking about thermonuclear fusion, which is the power source of the Sun itself. But that is a nuclear reaction, not a chemical one. We humans have never accomplished controlled nuclear fusion here on Earth, but we are working on it. If we succeed, it will be an unlimited source of energy.

  8. blessedrobert-cuz-it is written on March 9th, 2011 4:24 am


    i think 2 reason
    there is already a shortage of water
    putting a demand on water as fuel..will rise up the cost of drinking water.
    other reason..of prophecy..of water shortage.
    for rivers are already running lower than normal..some area rivers worldwide are drying up.
    a prophecy said..oil will be cheaper than water.
    yet, this maybe 20 ..40 years from now..who know what our world and wars and rumors of wars..and political arena gonna look like.
    gasoline drill here in USA or own by USA..will reduce cost of living..I think it is extremely wise..that our utility plants nad government places, schools and large company to be SELF SUFFIENCE with energy..they got the $$$ to go solor power..wind power..and wahtever else is there.
    there is a prophecy of NEW ENGERGY..will soon be revealed.
    i don’t think it is OIL of the gulf of mexico..yet..that is very GOOD for america to have it’s OWN OIL SOURCE..vs buying oil from warlords..of the middle east..let china have middle east well europe.

  9. bestonnet_00 on March 11th, 2011 12:27 pm


    Because it takes more energy to break the water up then you get from burning the hydrogen.

    If you break the water in another place that has abundant energy then you just need to store the hydrogen but you aren’t going to be able to do it on your car (if you have a source of energy on your car that can provide the power to split the water you’d probably be better off just running the car directly on that).

  10. josh on March 12th, 2011 2:37 am


    Someone did figure it out, Stanley Meyer. Yeah he’s dead now along with others. He figured out if you use low voltage (DC 1.5volts) and if you raise the frequency you get more reaction. Which gives you enough to boost your vehicle and run small engines. This all depends on the size of your HHO generator. Check out some videos on you tube.

  11. dad on March 12th, 2011 11:55 pm
  12. campbelp2002 on March 13th, 2011 3:45 pm


    Because it takes more energy to break up the water molecule than you get by brining the hydrogen.

  13. Gregor Hansel on March 15th, 2011 8:50 pm


    Have you seen the hindenburg, it go boom when there is a lot of hydrogen in a concentrated in a small area, and oxygen equals bigger flames.

  14. chattterus on March 17th, 2011 7:23 pm


    It can, sort of. Their are only two proven ways to use water as a fuel.

    1) As a source for air intake additive. The idea is you perform standard electrolysis on water and then inject the result into the air intake to increase the engine performance in a normal gasoline engines. The up side of this is that it can save up to 40% in some engines. The down side is it isn’t guaranteed to save more than a couple percent on some engines and the only proven devices cost in the thousands to install on an engine.

    2) Aluminum gallium reaction: Mix Aluminum and gallium and then expose to water. The result is Aluminum oxide, gallium, and hydrogen. A very simple idea that would produce hydrogen on demand from a tank of water. The downside is the aluminum oxide needs to be recycled and is a bit poisonous. Recycling aluminum oxide is a bit energy intensive. This research is being performed in laboratories right now. There has even been a small scale battery released for sale based on this technique.

    No other technique has been proven and released to the public. Be aware that everything including oil based fuels take energy to produce. But that it takes energy to make this work is not an argument. It is if we can make the process cost a low enough amount that matters.

  15. gary on March 20th, 2011 1:00 am


    It can be used for fuel just fine.
    check out stanley meyer and joe cell, from there youll see other guys who have got their cars, trucks, and bikes to run on water.
    the reason it wont work isnt tecnical its financial. you’ve literally got oil trillionaires who are willing to spend a few measly billion per year to buy patents, bribe politians, and take people out.