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Compressed Air Powered Cars
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Moon Mission Member  
Joined: Tue Jul 15, 2003 8:46 pm
Posts: 1204 Location: Kapellen, Antwerp, Belgium, Europe, Planet Earth, the Milky Way Galaxy 
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 Compressed Air Powered Cars Posted on: Tue May 24, 2005 4:52 pmhttp://www.theaircar.com/
I think this has great potential 
http://www.theaircar.com/models.html http://www.theaircar.com/howitworks.html I hope I'll be able to buy one soon  _________________ Heavier-than-air flying machines are impossible. - Lord Kelvin, 1892 |
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Space Station Member  
Joined: Thu Jan 27, 2005 12:34 am
Posts: 450
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Posted on: Tue May 24, 2005 6:00 pm My favorite variant of this is “liquefied gas propulsion”, for both robots and vehicles. In this, high density liquid Nitrogen or Carbon Dioxide (produced from EXISTING CO2 waste streams) is used. This “fuel” is stored at high density, yet low pressure. Pumping it into an evaporator produces the high pressure gas desired for the air motors. The real energy source is ENVIRONMENTAL HEAT captured in the radiator like evaporator. Air conditioning of course is trivial (an additional energy source) and the system does in fact reduce the ambient temperatures in the city. This is not of course an energy source – just another energy storage and transport system (as is the "Hydrogen Economy"). But it radically reduces the weight and hazard of the pressurized air storage tanks. Pumping gallons (or thousands of gallons for a rocket launch) of cryogenic liquids into the vehicle to extend range is no big deal. Since the power is limited by the heat exchange evaporator, a small pressurized tank to handle acceleration is desirable.
It is true that the system does not work as well in extreme cold (without a combustion heater). But few places get so cold that it is hard to boil liquid Nitrogen! |
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Space Station Commander 
Joined: Wed Mar 09, 2005 1:25 am
Posts: 887
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Posted on: Wed May 25, 2005 9:13 pm I love it. I can just hook it up to my mouth for perpetual motion.
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Space Walker 
Joined: Fri Jul 30, 2004 3:17 pm
Posts: 243 Location: So Cal, baby!
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Posted on: Wed May 25, 2005 10:18 pm Gotta hand it to you there, publi... that might be one way to actually subvert the Laws of Thermodynamics
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Moon Mission Member
Joined: Tue Feb 10, 2004 2:56 am
Posts: 1104 Location: Georgia Tech, Atlanta, GA
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Posted on: Thu May 26, 2005 12:35 pm Ummm..... I think I'll leave that one alone.
 _________________ American Institute of Aeronautics and Astronautics Daniel Guggenheim School of Aerospace Engineering In Memoriam... Apollo I - Soyuz I - Soyuz XI - STS-51L - STS-107 |
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