Posted on 04/16/2006 3:29:19 AM PDT by Timeout
Animal skins?!!!
/horror
BTTT
There a thread here somewhere, in which it is discussed that our sun has been determined to be a VARIABLE STAR, much like many of the other stars in our Universe.
An inescapable fact about the fuel cell car is that it's essentially an electric car with a battery that can be recharged, by filling it with hydrogen, as a conventional car can be refueled by filling it with gasoline. Hydrogen, however, is not a primary fuel--it has to be obtained by expending more energy than it will ultimately yield when consumed by a vehicle. The most efficient way to obtain hydrogen is by electrolyzing water, a process that would require vast amounts of electricity compared to the amount of electricity produced today, if all the other, major problems of hydrogen transport and use are solved. If that electricity comes from burning fossil fuels, there will be even more greenhouse gas emissions than there are now. Thus, significantly reducing our dependence on foreign oil by converting to hydrogen powered vehicles necessarily requires us to expand substantially our nuclear power industry, since nukes provide us with the only presently available, economically and technologically viable way to produce the hydrogen that would be needed to power fuel cell cars.
Actually, there are more efficient methods such as super-heating a hydrocarbon around a catalyst. Fuel cell reformers (which strip hydrogen from hydrocarbons) tend to do a decent job and don't use electrolysis.
The most important item about fuel cells is that they are more efficient than gasoline engines so they require a lot less hydrocarbon fuel. Theoretically you could just pull the hydrogen from the oceans via electrolysis, but this isn't very practical (for two reasons: 1) efficiency as described above, and 2) hydrogen gas does not have a very high energy density--i.e. you would need an enormous 'gas' tank or a cryogenic liquid hydrogen tank to be able to even drive 300 miles on one tank of 'gas'). Hydrocarbons will probably still be used and just be reformed in the car (stripped of hydrogen). But the high energy density octane mixtures that we refine out of crude oil will no longer be needed since we have massive methane reserves at the bottom of the oceans. If fuel cells become economical, they will grant us energy independence, but will probably not stop us from burning hydrocarbons (unless rabid environmentalists force us to take our hydrogen only via electrolysis powered by nuclear reactors).
Sir......you are all of them!
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