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Politics : Just the Facts, Ma'am: A Compendium of Liberal Fiction
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To: Ken Adams who wrote (51508)9/26/2006 4:59:30 PM
From: TimF   of 90947
 
Hydrogen does have excellent energy density by weight, but it has low physical density and thus pour energy density by volume. You either have to put it under enormous pressure, or combine it with other elements (reducing the energy density by weight and increasing the complexity of the whole operation), or you need to liquefy it (which requires super cold storage). Also hydrogen needs to be produced and it takes a lot of energy to produce it. Sure its common in the universe but it isn't common on earth except as parts of compounds like water, methane etc. Freeing hydrogen from those compounds is normally energy intensive.

On the radio the other day, Paul Harvey predicted we would be driving automobiles powered this way in about 5 years. I'd say, "don't bet on it". BWDIK?

I agree with you.
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