Posted by JMOR on February 14, 2010 at 14:56:00 from (72.181.166.239):
In Reply to: LNG posted by Heat Houser on February 14, 2010 at 13:42:19:
CLTX said: (quoted from post at 17:42:19 02/14/10) What ever happened to the push for Liquid Natural Gas (LNG) as a highway fuel. Years ago, there was talk about starting the infrastructure to make refueling stations abailable along the highways to encourage the use of abundant natural gas. I know that natural gas prices rose, but surely the fluctuations in oil prices exceeds the natural gas prices. All internal combustion engines produce CO2, but LNG engines burn so much cleaner otherwise. The bulky tanks create problems, but that can be overcome. Any ideas?
LNG is not a simple fuel to transport & store. It is liquid at several hundred degrees below zero. Extreme insulation will keep it liquid longer, but not forever. If the 'boil-off' isn't being used, it must be safely disposed of. Refrigeration is both costly & bulky. Without extreme cold temps, the whole tank of LNG will boil-off over a period of time and all is lost if not captured & used. Even transporting it across the oceans, they find refrigeration to be unreasonable, so they use insulated tanks & keep the tanks cold by a sort of auto-refrigeration.....the phase change from liquid to gas provides a cooling effect for the remaining liquid. The loss is just part of the cost of transportation so to speak. If you park your LNG car in your garage for a week, you had better be burning or venting that natural gas 'boil-off'! Otherwise, a spark, and no more garage!
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