"As the laws of physics can not be changed or investment policies, the hydrogen economy will never make sense."
"Only 25% of the energy source used to produce hydrogen, can recover for end use in fuel cells," estimates Ulf Bossel of the European Fuel Cell Forum in Lucerne.
Electrolysis is the separation (lysis, in Greek) of the water molecule into its components (two hydrogen atoms and one oxygen) due to the energy supplied by electricity. The current hydrogen cars (or their aforementioned "fuel cells") do just the opposite: we have hydrogen fueling is combined with oxygen from the air to produce water and electricity.
To be the opposite of electrolysis, unfortunately, you must first occur electrolysis or similar process. That is, you first have to spend energy to get hydrogen and then to spend the hydrogen for energy. So Rifkin and other lawyers hydrogen err by declaring an inexhaustible energy source: it is inexhaustible, but it is a source of energy.
"There are major barriers to hydrogen cars," says the deputy director of the Institute of Automotive Research at the Polytechnic University of Madrid (INSI), José María López. "Storage is one of them. Hydrogen is a gas, and its energy density is very low, so you put the car or a tank of 700 liters, or you have to greatly increase the pressure, and any two things is very practical . " Lopez is the author of Environment and the car, released by Dossat.
The full story in the País.com ►
here .... Hydrogen is also playing
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