| Tuesday, May 03, 2005 - 08:23 pm |
"Hydrogen fuel cells require H2 manufactured by burning fossilised fuel."
Incorrect. First of all, burning a hydrocarbon will give you water and carbon dioxide, probably some carbon monoxide too. There are many ways of producing hydrogen, some are more economically feasable than others, however.
"Solar requires an enormous footprint of panels that need to be maunfactured and maintained."
Yes, manufactured and maintained, but they wouldnt have a large footprint in somewhere like.. the sahara desert? OK so they would need to be put somewhere away from dust storms, but what about the tops of mountains? Nobody uses them.
"You can use alcohol, but how much land do you need to produce the sugar in the volumes required."
Yes you can, (incidentally you can also use ethanol to produce hydrogen cheaply) Brazil doesnt seem to be using up much of its land. Its feeding its population... adequately.
"If fuel cell technology ..... developed to their ultimate potential, it will not be enough."
Why wont it? Hydrogen is only about as dangerous as petrol. It can be obtained easily through the dehydrogenation of ethanol, using a catalyst. This will not run out.
That could be used to supply the central Hydrogen stations which just fill up your cars like they do today.
The electrolysis of water using electricity from the solar panels on the roof of your car will recharge your fuel cells whilst the car sits in the hot sun outside your office window.
I not only think that is all possible, it is also probable.