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Interesting new concept car-runs on compressed air

  1. Jul 18, 2004 #1
    Interesting new concept car-runs on compressed "air"

    link here : http://www.theaircar.com/

    thoughts ?
  2. jcsd
  3. Jul 18, 2004 #2


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    I find it telling that the link to the 'thermodynamics' details is dead.

    Who knows though. There is nothing that says that compressed air couldn't be used to power a car, it's just a matter of harvestable energy.
  4. Jul 18, 2004 #3


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    The website says: "Although a number dates have been released to the media in the past, the programme required some more time to complete."

    That is usually not a good sign.
  5. Jul 18, 2004 #4
    So lets see if I've got this right. I don't know how much energy can be extracted from compressed gas, but my guess is PV/2. (Correct me if I'm horribly wrong) The tank is 100 litres [tex](0.1m^3)[/tex] at 300 atmospheres [tex](3.10^7 pascals)[/tex]. That gives 1.5 megajoules of energy (less than half a kilowatt hour). A car battery can hold more than twice as much and a single litre of petrol gives more than ten times as much. They claim to be able to do 300 km, so thats 5000 J/km. When cycling I would expect to use about [tex]10^5 J/km[/tex]. Must be an amazing design! :uhh:
  6. Jul 18, 2004 #5

    Ivan Seeking

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  7. Jul 19, 2004 #6
    Hi sry i am relatively new here. I didn't know this was posted here before.
  8. Jul 21, 2004 #7
    it should probably work the same basic way as a steam engine, as that just heats wather to make compressed water vapor
  9. Jul 24, 2004 #8


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    And a petrol engine effectively does the same thing too, - heating air to compress it (in a roundabout kinda way), the resulting expansion driving a piston. The key difference is the way the air, steam or whatever, is given its energy.
  10. Jul 24, 2004 #9


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    Many years ago I heard Paul Harvey hype such a thing. It was bragged up and was mentioned that it's emissions were non-existant. I thought it was goofy at the time and I still do. Energy of some sort is spent on compressing the air to begin with.
  11. Jul 24, 2004 #10
    using wing effect technology, what would be the best thrust motor. one that is in the front or in the back of the aircraft.
    how could one get a higher level of flight from the use of wig technology?
  12. Jul 24, 2004 #11
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