Quote:
Originally Posted by RobertSmalls
Wikipedia says the electricity->H2->electricity efficiency of a fuel cell is 30-50%. That's much, much worse than batteries. Sure, refilling is easier, but the environmental impact of H2 is too large.
Barring a major breakthrough in the efficiency of hydrogen production, such as low-temperature cracking of H2O as a waste-heat recovery process, I favor lithium and lead-acid batteries over hydrogen fuel cells.
http://www.hydrogenhighway.ca.gov/fa...elltowheel.pdf
The above link indicates that if you're using grid electricity to produce hydrogen, HFCV's pollute much more than conventional gasoline-powered cars. Better to buy a gas-sipper and a windmill, than a HFCV. |
What if you used a rectifying antenna to get the electricity from radio waves? Then you'll just be using something that was once just wasted, right? No extra load on the grid and you'll be making hydrogen that you can sell. Probably more practical than directly powering the vehicles from the radio waves since it is much easier to do it on a tall, fixed pole with fewer limitations on cost, size, and weight.
Or what if someone figured out how to convert fat into hydrogen? America has a very large surplus of obesity.
Actually, skip the hydrogen part and develop a fuel cell that runs directly from fat. (see
My first official JOTD - CleanMPG Forums )