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Re: Bull F'ing Crap said by DMS1:The problem is that hydrogen-powered cars aren't going to solve much either. They certainly eliminate harmful emissions from the car itself, but since we don't have access to a plentiful supply of molecular hydrogen, one has to consider how the fuel is produced. One option is to produce it chemically from hydrocarbons - i.e. fossil fuels, and another is to produce it by electrolysis of water which requires loads of energy which would probably come from fossil fuels! Solar powered and geothermal electrolysis plants... The Europeans have working setups already in testing. |
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Limbo | said by factchecker :
Solar powered and geothermal electrolysis plants... The Europeans have working setups already in testing.
Solar. Probably. Geo, not likely. Wind will probably supplement demand as well but it's horribly unpredictable from day to day. In most areas of the country, drilling to the depths necessary for geothermal would make station construction prohibitively expensive. Solar has the drawback of limited energy production / ft^2 and worse yet, it could prduce hydrogen at most 12 hours/day (well unless you live in Alaska).
If memory serves, Sweden has a southern highway ring with hydrogen stations for the limited demand but those won't keep up with the current auto infrastructure demand. I'm not even sure if all the existing stations could convert to solar producing hydrogen that enough could be produced to run all the cars on the road if they switched.
Like it or not, the most likely candidate for massive quantities of hydrogen production may well come from nuclear. Nukes are among the highest output plants in existence, and barring turbine/generator equipment problems, they run pretty much non-stop between re-fuelings.
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said by factchecker :said by DMS1:The problem is that hydrogen-powered cars aren't going to solve much either. They certainly eliminate harmful emissions from the car itself, but since we don't have access to a plentiful supply of molecular hydrogen, one has to consider how the fuel is produced. One option is to produce it chemically from hydrocarbons - i.e. fossil fuels, and another is to produce it by electrolysis of water which requires loads of energy which would probably come from fossil fuels! Solar powered and geothermal electrolysis plants... The Europeans have working setups already in testing. Don't forget Nuclear power, US Navy vessels like Subs and Aircraft Carriers use It and have used It safely for years for their power needs and also make fresh water in abundance too. If You can make water, One can crack It too. 
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| said by zoom314:Don't forget Nuclear power, US Navy vessels like Subs and Aircraft Carriers use It and have used It safely for years for their power needs and also make fresh water in abundance too. If You can make water, One can crack It too. You don't need to do ANYTHING else to make H2. In a boiling water reactor (BWR - one of the two electricity generating types of plants used in the USA) hydrogen gas is produced as a BY PRODUCT of the nuclear steam cycle. The plant operators have to make a significant investment in re-combination equipment to reconvert the hydrogen and reduce system operating pressure. The nuclear operators would LOVE a market for their hydrogen. Not only can they make money selling it, they can do away with a major expense in electrical generation.
BTW, I'm told that the military has lost or misplaced more nuclear material then all the US commercial operators combined (who have lost or misplaced NONE).
Also, did you know the reason commercial generating companies have a disposal problem with spent fuel is that a Carter Administration law prevents them from using high-grade fuel (like the military uses), which is recyclable ?? Yep - your Government at work...
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