Fun Stuff > CHATTER
Weather Channel founder wants to sue Al Gore
Ozymandias:
Man, energy does not work that way. The energy required to get pure hydrogen would be way more than the energy gained from the pure hydrogen, this is basic physics people, come on, ask your local laws of thermodynamics.
KharBevNor:
To be fair I think the dude was just talking hypothetical uses rather than postulating a perpetual motion loop.
Chesire Cat:
Bottom line is water as a greenhouse gas is far less damaging to the environment and everything else as CO2 and or Nuclear Waste, and Lithium Ion batteries are tricky to dispose of and expensive to replace.
I guess technically power from wind or solar sources charging a battery powered vehicle wouldnt be so bad, but I put my money of Full Cells as the smart tech. That and riding Rat-Cyborgs to work.
IronOxide:
--- Quote from: Ozymandias on 14 Sep 2008, 00:32 ---Man, energy does not work that way. The energy required to get pure hydrogen would be way more than the energy gained from the pure hydrogen, this is basic physics people, come on, ask your local laws of thermodynamics.
--- End quote ---
Yes, but a self-sustained factory powered by perhaps wind, water, or another renewable source could be put to good use as a dedicated hydrogen plant. This could be used to create massive amounts in a clean way (that does not rape the environment quite in the way of battery technology).
dennis:
--- Quote from: Ozymandias on 14 Sep 2008, 00:32 ---Man, energy does not work that way. The energy required to get pure hydrogen would be way more than the energy gained from the pure hydrogen, this is basic physics people, come on, ask your local laws of thermodynamics.
--- End quote ---
Energy conversion is a fact of life. We can use very little energy directly for modern tech, so we must convert it (wasting some of it in the process) to something that is convenient and steady. The reason hydrogen is a good fuel source is that it is a good storage medium for that converted energy (high energy density, but it has other problems, like leaking out of virtually anything you put it into and causing corrosion in steel). So, there's nothing wrong with storing energy from less available sources in H2. Use solar or whatever to crack water, and there you go.
Fuel cells are the same idea.
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