Hydrogen cars for the most part use a Fuel Cell to "burn" hydrogen producing Energy. This requires hydrogen to be separated from water, and requires the same amount of energy as you would get from the fuel cell. if the fuel cell & Electrolosys were 100% efficient. Neither are, and some estimates are as high as 75% energy loss due to inefficiencies.
The Byproduct of the fuel cell is water vapour which wikipedia states accounts for 36-70% of the greenhouse effect. I also can't help thinking about the environmental impacts if all the millions of cars on the roads today produced water vapour and the amount of rain this would produce, Mudslides and floods etc.
Electrolosys is the process that splits water into Hydrogen and Oxygen, however as the name suggests, this requires Electricity to work. "The Grid" or electrical supply for this electrolosys or my electric car is largely powered by fossil fuels. Just cause i cant see the pollution from an electrical outlet doesnt make it green
2007-11-07
12:47:18
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8 answers
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asked by
Anonymous
in
Alternative Fuel Vehicles