Is it possible we could have a car that runs on water(hydrogen)?

Question

in the near future or was that some BS i seen on tv?That would be the best thing that ever happened.

Answer 1

The electrolysis process seperates water into hydrogen and oxygen, and it requires a great deal of energy. Loosely speaking, if you reversed the process, you could get energy out of it, which, I believe, is what hydrogen fuel cell vehicles do.

However, a system like this has to take seperated hydrogen and oxygen as input, not water. The reason is that the vehicle would have to run the electrolysis process forward, and then in reverse! The laws of thermodynamics tell us that energy will always be lost, and never gained, by such a process.

Hydrogen fuel cell vehicles would have to be supported by large electrical plants (nuclear preferably) which powered factories that ran the first part of the process. Energy is still lost in the end, but the overall cycle is highly efficient.

Answer 2

No, that will never happen. No cars will run on water....
HOWEVER there ARE cars that run hydrogen. *and oxygen from the air* They come in many shapes and sizes.

Before you think you found the answer. THE REAL question is how to get the energy to turn water back into hydrogen and oxygen. EVERY technology (Thats not a scam, yes I have seen the scam technologies that claim it, yes they are all scams, no the one you saw is not different) every technology that breaks water into hydrogen and oxygen loses about 70% of the energy in the proccess. Making the energy for the conversion is the real sticking point because currently we need nuclear, coal, or oil to produce energy to produce the hydrogen.

Answer 3

I think the concept is that gas expansion drives all combustion engines. Way before the use of fossil fuels, the industrial age had trains, boats and even early cars that were steam driven. They were monster engines that required a lot of metal and fuel to heat the water enough into steam. However, today's technology could make a viable engine for the average car that runs on steam. The only problem is heating the water, and I don't think anyone wants to shovel coal in the trunk of the BMW. Fuel cells, batteries or energy would be too large and/or expensive for the average person.

Answer 4

The internal combustion engine will run or burn whatever fuel you may choose! It requires altering the fuel delivery system and the ignition timing for the air/fuel mixture of your choice! It can run on everything from iron fillings and saw dust,number two fuel oil,Jp4 jet fuel,or methane, ethane, propane,butane or natural gas! If it will burn it can be used as a fuel. Whether you would choose one over another is a question of how much energy is readily available and how much you can carry for practical usage. It can burn hydrogen but hydrides would be more efficient. Hydrogen has very little BTUs available per cubic yard. It would be a poor choice from that aspect but a good one since it is renewable.

Answer 5

Now a days the vhehicle uses ready fuels( highly combustible), but in this case water is not fuel,first you have to separate hydrogen from water molecule and then use it for controlled combustion, which will require huge space and which may not be available in cars nowadys and also willbe too costlier. but in future hydrogen will be the fuel and will be abstracted from air instead of water which can be cheaper.

Answer 6

It runs on hydrogen and a byproduct is H2O (water).

Added: Hydrogen is the most plentiful element in the universe. The water would be drinkable as well.
http://sln.fi.edu/inquirer/hydrocar.html

Answer 7

Whoa man, put down the doobie and turn off "That 70s Show".

Answer 8

Yea buddy.....we allready have vehicles that run on water!!!

There called BOATS!!! Ha Ha! LMAO!!!

Seriouslly, I doubt that we will ever see that happen!

Here's to water....FreeBird/Andrew