Miðvikudaginn, þann 3 maí 2006 07:39 skrifaði Randall R Schulz:
Sadly, electrolysis is a very inefficient way to produce hydrogen gas. And while it's true we've got so very much more solar energy than we need, even after the biosphere gets everything it needs, it still is a wasteful thing to do with a high-quality form of energy such as electricity. If you want to store the energy, which is of course is a practical necessity, since it's rarely needed in proprotion to its availability, you do better to simply pump water uphill! Electromechanical energy conversion (i.e., motors and generators) is a lot more efficient than electrochemical conversion (batteries, fuel cells and electrolysis).
While electrolysis may be a very poor way of producing hydrogen, heat is not. Heat, as an energy form, is in abundance in many places and can be easily used to catalyst the transition of water to hydrogen+oxygen. Transportation of hydrogen as a fuel, is by no means a bigger problem, than oil.