problem with hydrogen fuel cells

ok so i havnt really done much research on this topic so i could be completely wrong, but as far as i know the concept is fueling your car with basically water and the only emissions is water vepor. tis sounds great and everything, but couldnt this completely change the climate. apply the concept of cloud seeding here,when you deposit enough water vapor in a certain area it will rain, thus areas like cities with eavey traffic will all become very wet climate wise. also im pretty sure that a problem with seeding clouds is that although youre successful in making one area rain, it causes the surrounding areas to lose moisture. so since this would happen on a global level, wouldnt there be a major climate shift with heavily populated and traveled areas becoming much more humid and the surrounding areas more arid. plus that would lead to an increase in the mosquito population in more populated areas, leading to more disease.

 

who knows... it will sure boost my investment in Pd though

 

there are several problems. one is a means of economically and profitably mass producing the specified permiability membranes required by the cells themselves, to bring the cost down within the range of reasonable affordability. that's what the big push of promoting them was all about. that hurdle has not been solved, though of course eventually it almost certainly will be.

the other you mentioned, is of course quite intractable.
it is the nature of bussiness to cut corners when seduced by the lure of increased profits. thus making inevitable the day, were hydrogen to power personal vehicules, when someone refueling one lights up, around an imperfect seal that hadn't been replaced, to save the cost of doing so. and as a result, blasts themselves into orbit.

much more practical are well proven means of storing energy, that is provided from other clean sources. and using stored energy as a means of propulsion, with the possibility of on-board solar trickle charging, and putting it on rails, where more miles can be gotten out of a given amount of energy. literally.

attractive as some aspects of the hydrogen concept are, it is among the least practical of clean alternatives, and its advancement was encouraged, at least partially, as a means of discrediting all of them, in favor of the totally needless continuation of reliance upon combustion, for the profit of the few, at the expense of the many, including the planet itself.

 

the cost of the cell and the sheer size are its biggest down fall. after awhile the cells will need replacing because of the contaminants that will inevitably be in the water will clog the membrane walls leading to failure, now that could be decreased with 100%(or as close as you could get it) purified water but it will fail due to contamination. being in the auto repair field i know that the cells will be as much if not more then the vehicle its self. so if you pay 30-50 thousand for a car how long will it be before the cells fail? all this is under the understanding that all the oil mongers let it happen.

 

Perhaps a bigger question is where the energy is going to come from to obtain hydrogen. Hydrogen today comes mainly from the hydrogen in non-renewable sources, such as fossil fuels (oil or methane).

To obtain hydrogen from water requires energy, which could come from fossil fuels, solar, hydro, wind, or nuclear.

Using the waste heat of nuclear plants is one proposed method, although that involves the issue of nuclear waste.

http://www.eurekalert.org/features/doe/2004-06/dnl-npm061404.php

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I'd weigh in, but it would be a waste of time.