Weather Systems
Weather Systems
Could the emission of vapor water from hydrogen fuel cell cars possibly effect weather systems?
I'm all for fuel-cell cars, and assuming they take over the market in the next two decades, has anyone thought about the fact that the amount of water we would be adding to our environment is also a "pollutant" of sorts as well? That's a lot of H2O being emitted...
This is actually quite a good question. Not only could the emission be significant, just consider how the hydrogen would be produced.
Right now hydrogen can be produced from natural gas, but doing so creates the same amount of CO2 as if you had burned the natural gas. So, the eventual source for H2 has to be water. If you take as a rough estimate that you would need the same weight of H2 to run a car as you currently use gasoline, then you would need about 100 pounds a week or more for a small car, Anyone who took Chem 101 understands that to get 100 pounds of hydrogen from water you have to split up 900 pounds of water. So, that's 25 tons a year or more of water per each small car,
If Los Angelese had 10 million cars, times 25 tons a year, then you would be supplying, and then returning into the air, at least a conservative 250 millions tons a year of water just for LA.
And, to split the original water, you would need a lot of electricity which you would have to get from some completely non-fossil fuel, renewable source such as solar or wind or tide.
It's all possible, but we are a very long way from having such a system in place.
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