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Combine all this with the fact that it's energy density is very poor - about 27% that of gasoline or diesel, and you have a fuel that is being pushed solely because it is "green".
I agree, to an extent, that hydrogen fuel-cell cars are being pushed as "green" vehicles, but the main reason is to lessen dependence on petroleum/foreign oil.
Electric cars make much more sense than hydrogen cars ever will.
I assume, here, that you are refering to traditional battery-powered electrics, because hydrogen-fuel-cell cars also power electric motors. In fact, fuel-cell technology started with NASA decades ago as a means of producing electricity in space.
fuel cells in space makes a lot more sense than on the ground. In space you already have a large supply of liquid hydrogen. You cant use huge battery banks in space due to the weight. But on Earth those advantages are negated.
Originally Posted by PhilipMSPT
I don't know why they'd use the same material found in Hydrogen bombs?!?
this statement has the same irrelevance as I dont know whyd they'd use the same material found in water. Read on the principles of how a hydrogen bomb works. They use a fission bomb to compress hydrogen so a fusion reaction starts, energy is released when hydrogen combines with other hydrogen molecules to form helium. The exact same method that the sun generates its energy. How can you get more green than the Sun?
Last edited by 4TehNguyen; Aug 31, 2010 at 05:59 AM.
fuel cells in space makes a lot more sense than on the ground. In space you already have a large supply of liquid hydrogen. You cant use huge battery banks in space due to the weight. But on Earth those advantages are negated.
Hydrogen also has one of the highest energy concentrations per unit weight (but among the lowest per unit density), so it makes sense for space, where lifting mass is incredibly more difficult than lifting volume. On the ground, that isn't an advantage, and in fact, more of a hindrance.