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

To: Salt'n'Peppa who wrote (121247)	5/31/2009 10:18:39 AM
From: jrhana	Respond to of 206084

As we live in the late stages of the age of Google and Wikipedia, you inspired me to read a little on propane. Yes the vehicles seem to be there. Major positives: <The advantage of propane is its liquid state at a moderate pressure. This allows fast refill times, affordable fuel tank construction, and ranges comparable to (though still less than) gasoline.> <In the United States the propane fueling infrastructure is the most developed of all alternative vehicle fuels.> <Propane is bought and stored in a liquid form (LPG), and thus fuel energy can be stored in a relatively small space. Compressed Natural Gas (CNG), largely methane, is another gas used as fuel, but it cannot be liquefied by compression at normal temperatures, as these are well above its critical temperature. It therefore requires very high pressure to be stored as a liquid, which poses the hazard that, in an accident, a CNG tank may burst with great force, or leak rapidly enough to become a self-propelled missile. Therefore, CNG is much less efficient to store, due to the large tank volume required.> Disadvantages: <Propane is heavier than air. If a leak in a propane fuel system occurs, the gas will have a tendency to sink into any enclosed area and thus poses a risk of explosion and fire. The typical scenario is a leaking cylinder stored in a basement; the propane leak drifts across the floor to the pilot light on the furnace or water heater, and results in an explosion or fire.> <Propane combustion is much cleaner than gasoline combustion, though not as clean as natural gas combustion. The presence of C-C bonds, plus the multiple bonds of propylene and butylene, create organic exhausts besides carbon dioxide and water vapor during typical combustion.> And finally the fatal flaw: <The supply of propane cannot easily be adjusted to meet increased demand, because of the by-product nature of propane production.> en.wikipedia.org So I don't see propane coming close to fulfilling the needs of hundreds of millions of car crazy Americans youtube.com youtube.com youtube.com youtube.com