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Gold/Mining/Energy : Big Dog's Boom Boom Room -- Ignore unavailable to you. Want to Upgrade?

To: axial who wrote (121208)	5/30/2009 9:17:30 AM
From: jrhana	Read Replies (1) \| Respond to of 206084

Thanks for an interesting discussion. From Your link <Safety is a priority, as can be seen by the tank construction, but CNG is actually the safest fuel we have. It has a very narrow flammability window (percentage of gas mixed with air) and it takes double the temperature of gasoline to ignite (about 1400 degrees). Fuel storage tanks in vehicle trunks are vented to the outside if tank pressures go too high because of excessive heat. No box covers are allowed on trucks with tanks in the box to prevent gas accumulations if a leak should ever develop.> canadiandriver.com According to this guy: <“It can make a significant difference in a fleet situation,” he said. “The economics are still there because of life-of-engine economics. The engines will last longer, they have less maintenance, and they will be significantly cleaner than any thing else on the road.”> timeswv.com

To: axial who wrote (121208)	6/1/2009 10:31:29 AM
From: ezspkns	Read Replies (1) \| Respond to of 206084

H2 is a different beast. More difficult to contain as the molecule is smaller, and makes some steels and other metals brittle. Also less dense, so its more difficult to store an equal amount of energy. There is also propane which has been widely used in IC engines for a long time. Propane's hazards start to involve multiple - phase issues - its a liquid in the tank, very dense - but boils at -46 deg. F so any "spill' will vaporize. Its heavier than air, so it can settle and pool in low areas. NG is lighter than air, thus dissipates upward. EZ