-----Original Message----- From: Terry Blanton "A third advantage is that liquid nitrogen is a by-product of the industrial process for making liquid oxygen....
http://www.economist.com/blogs/babbage/2012/10/nitrogen-cycle The LN system seems to offer so many apparent advantages that scammers like Mike Brady, of Perendev infamy, tried to get in on the act. That is actually a compliment and adds to the amazement that it is still being overlooked. However, the article in the Economist completely misses the Co-Gen angle which can pay for everything (but which works better with liquid air than with LN in a home setting). Wiki has a poor article that does not mention Co-gen or liquid air either: http://en.wikipedia.org/wiki/Liquid_nitrogen_vehicle The hybrid + cogen version, which could easily replace batteries is a liquid air system which does need a small ICE for best results. But the small ICE means you never run out fuel due to having no filling station, since you have backup. This system is ideal for N. Europe where for many months of the year, the heat generated to make liquid air is used to heat the home and make hot water. That is the co-gen angle; and it can save more than money a Prius for some locales, since home heating is so onerous. Liquid air is best employed in a vehicle with a small sub-liter diesel engine (to heat the liquid air for a compound turbine providing most of the power). The expansion ratio is extreme when heat is added - at least double the 700:1 of the cold version - so it could allow extreme mileage for the diesel fuel which is needed. It is rather amazing that the Germans have missed this niche - given their cold winters, love of the diesel, high fuel prices, and general inventiveness in everything automotive. Jones
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