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Thread: Explosives as a fuel

  1. #1 Explosives as a fuel 
    Forum Freshman Robinol's Avatar
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    Recently on a TV program, i got to know about some classical models which used thermodynamic expansion to generate energy. The expansion was due to the explosion of small quantity of gun powder. But they were not quite effective.
    Now, what I think is that instead of changing engine for the given fuel we can make a few changes in the fuel itself. I am working on a mixture of Petrol(Gasoline) and Nitroglycerin. What I need to know is a chemical that can decrease the reactivity of Nitroglycerin. Please help.


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  3. #2  
    Forum Professor Zwolver's Avatar
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    Use a different fuel then nitroglycerin. Why not use ammoniumnitrate?


    Growing up, i marveled at star-trek's science, and ignored the perfect society. Now, i try to ignore their science, and marvel at the society.

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  4. #3  
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    I believe this has been done in auto racing. You might try researching that area.
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  5. #4  
    Forum Freshman Robinol's Avatar
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    Quote Originally Posted by Zwolver View Post
    Use a different fuel then nitroglycerin. Why not use ammoniumnitrate?
    Well Nitroglycerin is a liquid and so can be used in petrol engines.
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  6. #5  
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    surprised that you aretill alive.
    do you uderstand the concept of engine knock?
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  7. #6  
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    On the basis of energy contained, it would not be worth your while to use explosives as a fuel. The difference between explosives and fuels is the possible caloric content and the time it takes to give it up. Nitroglycerine is very low in caloric content but releases all the energy at once. Parafin wax used for candles has much more energy but slowly gives that energy up upon combustion.

    This is only true at standard conditions (20 degrees C, normal pressure, normal oxygen content).

    The "nitro" they talk about in racing is nitrous oxide and a different thing all together.
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  8. #7  
    Forum Freshman Robinol's Avatar
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    Quote Originally Posted by fizzlooney View Post
    surprised that you aretill alive.
    do you uderstand the concept of engine knock?
    Would you mind explaining that concept?
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  9. #8  
    Forum Freshman Robinol's Avatar
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    Quote Originally Posted by jetstove View Post
    On the basis of energy contained, it would not be worth your while to use explosives as a fuel. The difference between explosives and fuels is the possible caloric content and the time it takes to give it up. Nitroglycerine is very low in caloric content but releases all the energy at once. Parafin wax used for candles has much more energy but slowly gives that energy up upon combustion.

    This is only true at standard conditions (20 degrees C, normal pressure, normal oxygen content).

    The "nitro" they talk about in racing is nitrous oxide and a different thing all together.
    Can nitrous oxide be used?
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  10. #9  
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    By mixing a volatile compound such as nitroglycerin into a fuel, you are decreasing the stability of that fuel. Engine knock is when the fuel mixture ignites at an improper time in the engine cycle, messing up the "sync" of the engine. By creating a fuel that is less stable (especially with a compound such as nitroglycerin), you vastly increase your chances of a premature explosion. These explosions can be detrimental to the engine itself and can easily damage it. -I believe this is what fizzlooney is getting at.

    I'm not sure what you are trying to create with this fuel, but any car wrecks with a full tank of it would be spectacular.
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  11. #10  
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    correct- detonation will quickly destroy the engine. BTW the fuel used in top fuel racing engines is nitromethane CH3NO2. nitrious oxide is is an oxidizer used to allow more fue (normally gasoline or alchol) to be injected in in the air fuel mix.
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  12. #11  
    Forum Bachelors Degree dmwyant's Avatar
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    I suppose explosives could be utilized.. I mean there are experiments with Pulse Detonation Engines... But why would you use explosives when there are other cheaper simpler and LEGAL fuels available.
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  13. #12  
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    Robinol has a death wish
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