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Air Car (2 of 2) from Australia

cplai asked:


A rotary engine runs on compressed air. Part 2 of 2. See the first…

Taekwondo

This entry was posted on Saturday, April 25th, 2009 at 4:19 am and is filed under Australian Videos. You can follow any responses to this entry through the RSS 2.0 feed. Responses are currently closed, but you can trackback from your own site.

24 Responses to “Air Car (2 of 2) from Australia”

  1. Us americans are too lazy? Lol. We’d rather watch the ball game or somethin’

  2. Fishing seat boxes

    might not be great for crossing any desert, but here in Europe it would be a hit: when u need to go far, u use a highway, and the law is that you need to have a max of about 50 miles between petrol stations in order for a road to be called a highway. so no problem here. The only question is : where do I buy one ?

  3. ok, do u ppl know that the japanese recicle 100% of all batteries? they waste nothing- just a thought, what is stoping the rest of us to do the same?..

  4. i think that’s what he meant (i might be wrong)

  5. Fishing Baitboats

    are you kidding? it runs petrol for 2 min and goes clean for 2 hours!!! and most comprssors run on electricity ; in Europe they do, don’t know in US

  6. fishing bivvies

    who cares when it’s FREE?

  7. fly and game fishing

    Quote “In an axial flow compressor the interactions between the stator (stationary) and rotor (moving) blades in effect converts most of the otherwise wasted heat energy into positive force on the rotating blades as the gas is reversed and accelerated a couple times.”
    Nope Your engineer is confused. efficiency in compressors increases if heat is removed between multiple stages. You cannot use this except as a low grade heat source.

  8. Yes, you hit it on the nail when you were getting at the heat re-use part.

    In an axial flow compressor the interactions between the stator (stationary) and rotor (moving) blades in effect converts most of the otherwise wasted heat energy into positive force on the rotating blades as the gas is reversed and accelerated a couple times.

    This is how it was explained to me by a GE engineer. Now, mind you, I only know basic thermodynamics, gas laws and Bernolli’s principle, NOT fluid dynamics.

  9. Fishing Jackets

    Quote “I know for a fact that expensive “axial flow compressors” now have an excess of 90% efficiency” OF THE THEORETICAL, but the heat energy HAS to be rejected.
    gas law
    PV=nRT.
    If you compress a gas it gets HOT, the heat energy has to be rejected other wise things melt, this is a loss, unless you retain the heat and re-expand it but that’s a gas turbine or a sterling engine and a whole new ball of wax.

  10. Spinning Exercise Bikes

    now thats kool

  11. Of course, the air tanks in the car would not have nearly as efficient heat exchangers as big, heavy, and expensive charging stations, so the tank temperature will drop below ambient levels and you will loose efficiency (imperfect isothermic cycle). In hot climates though, this is a plus since you get airconditioning for free.

    Now, I agree with you 100% that theory is one thing but practice is quite something else.

  12. Fishing Bite Alarms

    Thanks for the info.
    I understand what your getting at. This is what I know of thermodynamics: It is true when you compress air it generates heat that must be expelled. However when you release the gas the air container then also acquires heat from its surroundings (can be done with intercoolers). Hence no energy loss. This is what is know in theory as perfect isothermic cycle. I know for a fact that expensive “axial flow compressors” now have an excess of 90% efficiency. continued…

  13. Google Rexresearch Negre or join Yahoo groups air car. Data was on MDI site but they removed the miserable test result about 2 years ago
    You have confused % of theoretical efficiency vs actual efficiency. When you compress air it gets hot the heat has to be rejected. Hence all the cooling fins etc This is a very large loss of energy that the air car cannot use.
    Hope that helps

  14. In a vette, the fiberglass body panels are over a rigid steel frame enclosing the passenger compartment.

  15. Do you have the link for the test reports? Could not find it on their website.
    Why do you say that air compression power is not efficient?
    Most of the better designed compressors have just over 90% efficiency. Now the motors themselves will probably work poorely in cold climates, which is why the biggest markets are temperate countries. The air will drop in temperature as it is released rapidly but it can be efficiently put to use for interior AC (useful in hot regions).

  16. Quote “Air power can be made very efficient” Nope. Read MDI’s own test reports. Plus compressing air is not an efficient way to transfer power RESULT 7.2km range under test, 15 years of broken promises, A STINKING CON

  17. Taekwondo Forms

    However vehicular internal combustion engines are only at most 8% efficient. The big electric power plant diesels are now over 50% efficient at converting fuel to energy. A huge gain!!!
    Air power can be made very efficient. Air engines are far lighter than heavy diesel counterparts and you need far less metal in the vehicle because you are not dealing with combustible fuel and heat. The technology is far more affordable in 3rd world countries than hybrid, electric or fuel cell.

  18. Fishing Chairs

    You still have to use energy to compress the air… so instead of individual cars polluting, you will move the source of the pollution to the power plants, of which there will need to be many many more to meet the demand (assuming you could ever replace all the work that petrol engines do, like pulling tons of freight with a big rig).

  19. fishing shelters

    Tesla turbine + valular tube and voila yet more inefficient over hyped crap that in real world tests never comes even a small way to the claims of the Tesla happy clappys

  20. Tesla’s turbine + valvular tube + combined with this invention and voila! Minimum use of power to feed the motor. Heat exchange to give a little more to the process.

  21. ha. i love how aussie’s say “air”. EArr

  22. A vehicle engineered for CNG will be a hybrid with regenerative braking.
    The engine will have all electronic valves allowing the engine to operate by combustion or compressed gas(air), or operate as a compressor during braking.
    CNG, Hydrogen, Compressed Air. Decompressing CNG or Hydrogen powers the engine as well as combusting.
    The travel distance will almost double when CNG or Hydrogen is the fuel.

  23. Darlington Junior Football Teams

    That’s great!!

  24. YES :) this engine is wonderful

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