If everybody was driving hydrogen powered cars would that mean more rainfall ?

Question

and with more rainfall would that mean that there would be more floods iin the midwest and other places this is assuming that all transport vehicicals( cars, semis, planes and all that) were running on hydrogen power .

Answer 1

Yes, but the difference in rainfall would be so small it would be hard to measure unless everyone drove a Honda FCX-type car. Condensation at low temp of this vapor into ice would be a bigger problem, as Winterrules mentions. This is one more reason that hydrogen power doesn't make as much sense as electric cars or hybrids. You lose so much energy turning water or natural gas into hydrogen that you would be better off if you just stored the same energy in an advanced battery. If the hybrids were designed like the Tesla to run on batteries alone, with a small multi-fuel engine aboard for on-the-go recharging only, mpg would be much higher than it is with current hybrids. Not to mention that hydrogen gas is harder to contain than gasoline and a ruptured or leaking hydrogen tank could be disastrous. See the final link for proof of that.

Answer 2

no, ICE engines already make water. There isn't enough water from combustion as compared to evaporation to make a difference.

Answer 3

Yes a lot more rain..

Answer 4

Hydrogen fuel cells give off water and water vapor as their only emissions. This could lead to more humidity (especially in large cities like LA, NY and Chicago). That would make it hotter and possibly make it rain more. Then, the increase pollution of the power plants making the electricity (because not all power plants will be green instantly after the "hydrogen revolution") would exacerbate the humidity and precipitation.

That is why hydrogen fuel cells should be relegated to motor pools like public transportation, fleets and municipal services. Biofuels, hybrids and some electrics should be used as the average consumers' personal transportation.

It is true that internal combustion engines do make water vapor, but not nearly as much as a hydrogen fuel cell would.

Answer 5

No.

Answer 6

I don't think it would make any difference.  The amount of water vapor added to the atmosphere would be negligible compared to the normal evaporation from the oceans and other bodies of water.  People probably already influence the humidity more than that by watering their lawns.

Answer 7

I don't know about more rain but I can see fog conditions created in gridlock situations.  The thing that concerns me is a traffic jam when the temperature is below zero.  Would that water vapor coming out of the exhaust pipes of hydrogen cars create an ice fog and slippery roads?

Answer 8

then steam engines would already cause floods (they release the valves with steam quite a lot, especially when stopping the train). even if hydrogen would release water, probably there would be another tank in the car to capture the water, otherwise it will be very slippery.

currently hydrogen is only for rich individuals, or if they would use nuclear energy to make it. after doing lots of research it takes 2 or 3 times more energy to make hydrogen. then its better to simply fill batteries and drive with them.

Answer 9

Have you ever seen water dripping out a tailpipe of a vehicle?    That is water created from combustion.   The same thing would happen with hydrogen, except a little more would be coming out.   Maybe the weeds would grow better along side the roads.

Answer 10

Cars already emit quite a bit of water vapor in the exhaust. Using a regular internal combustion engine, a hydrogen powered car would emit only a slight bit more than a gas powered car. A hydrogen fuel cell car might emit less.