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05-10-2010, 04:55 PM
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#5 |
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Steals terrorist's lunch
Drives: 2007 Yaris Liftback Join Date: Mar 2007
Location: Reno, Nevada, USA
Posts: 1,299
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This has been looked at by other manufacturers including BMW, and everyone involved has found the same thing - that it takes much more energy to compress the air than you ever get back from it. It's the same reason that hydrogen doesn't currently work, either. Both ideas represent a negative energy return.
Out of all of the alternative transportation fuels ideas that have come up thus far only 2 have made good sense: battery electrics (70% efficiency) and ethanol from easy growing, sustainable, non-food sources such as switchgrass (around 18% efficiency).
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- Brian Share the Road I often carry 2 carpool passengers and mountain bikes or snowboards/skis over a 4,500 foot elevation difference. Click the graphic above to see my detailed mileage logs. |
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