Jones Beene wrote: > > Fred - what do you think about this.... > > Nitrogen is roughly 80% of air and has little value as an > oxidizer. Oxygen is a strong oxidizer. All strong oxidizers > can technically be called fuels, especially if they can be > enriched to the level of being able to superoxidize water. > Moreover, in the process of liquefying air, it is just as > efficient (almost) to both liquefy and enrich the end > product in oxygen. LOX has drawbacks and is not really > needed. > You can buy a good used Medical Oxygen Generator that uses molecular sieves to get 95% or better purity at the rate of 1.1 lb/hr O2 and about 4 lb/hr N2 using less than 700 watts out of the wall socket. If you prefer to liquify the rejected N2, all you need is a $70.00 window air conditioner, an air compressor and some plumbing to crank out about 100 lb/day LN2 at a cost of about 10 cents per pound. IF that Swiss LN2 operated motor (60 kW that will fit in a shoe box) gets the claimed 40 miles per liter you can get by at a fuel cost of a penny/mile. :-) > By compressing air in two stages (which is normal) and > separating the "first" stage of expansion magnetically > (oxygen has good paramagnetism, nitrogen no) then you can > chill the second stage with the nitrogen separated from > stage-one and not loose any significant energy. IOW > producing liquid enriched air of about 40% O2 content is > > However, one must realize that unless the electricity used > to liquefy air or any gas mixture is coming from a nuclear > plant (or wind, solar etc), there will still be carbon > released "somewhere" to make any cryo-liquid. > Of course, but where do you think the energy for recharging batteries or converting methane or coal to hydrogen is coming from? > > Nevertheless, this still could be beneficial as the Carnot numbers make it > more appealing than many realize. Plus during the cryogenic > stages, some CO2 can be removed but not nearly as much as is > produced in a coal fired plant making the electricity. It > still beats a gasoline engine in all respects. > Sure does. > > This ability to separate magnetically is due to differences > in electron distribution, called the Lewis structure. O2 > has an unpaired electron on each atom. Molecules with > unpaired electrons are paramagnetic and exhibit magnetic > properties. With oxygen the magnetic properties are pretty > dramatic, as the following images show. The Lewis structure > of N2 does not have unpaired electrons. Molecules with no > unpaired electrons that do not exhibit magnetic properties > and are diamagnetic and very easy to separate in the first > stage of a two stage liquefaction process . > http://www.chem.uiuc.edu/clcwebsite/liquido2.html > Interesting.
Frederick > > Think about it. What would you rather have - a real liquid > fuel or a real chill.... > > Jones >
