Fuel Definition and 563 Threads

Does anyone have any hands on expierence with Hydrogen fuel cells used as the backup source on UPSs.

From what I understand about fuel cells, they generate power by influencing electrons to move themselves around an ion-conducting material to get to the other side. While the electrons make there way from one side to the other, they supply DC in the middle of there journey. But I am not quite...

Being fairly new to the whole fuel cell thing (or at least how it works), I have a couple questions. I have learned so far that Proton Exchange Membrane (PEM) fuel cells work using the following device and process: * Why must the hydrogen be combined with oxygen at the end of the process...

I am curious about whether water could be used as fuel. Water is H2O right. So if water is two molecules of hydrogen and one molecule of oxygen can thus hydrogen be used as a propulsion fuel and oxygen a burning agent?

Dont know if this is the right forum for this question, let me know if its not! Im designing a car and i need a 50 litre fuel tank. Can anyone tell me what the dimensions of the fuel tank would need to be?

I'm sure everybody has heard all the stories about high mileage carburators and the oil companies etc. But why has this problem not been solved? Approximately two thirds of the fuel we burn in our cars goes out the tail pipe. I've read that someone has used catalytic cracking to breakdown the...

The US has a lot of oil but much of the oil used is shipped in from the middle east. Gasoline and diesel are cheap in the US. Europe doesn't really have much oil; most of the oil is piped from the middle east. Gasoline and diesel are insanely expensive. If Europe is so much closer to the...

Were you guys and gals aware that WMDs in Iraq are no longer being sought with the fervor displayed at the start. Here is an article that gives one the feeling that this is so. http://www.sptimes.com/2004/01/11/Columns/Bush_s_deception_on_I.shtml

Does Mercury have properties that would permit its' use as a Fuel to power Spacecraft? Has this been done before or experimented with? If it is heated to its' vaporization point, what happens? I know it is highly poisonous but I have heard that it has a potential for use as "a" fuel.

Ok, I have tried to rationalize this problem, but I am stuck, I don't even know how to start! I know it has to do with kinetic energy though. When a truck goes from rest to 30 miles per hour, it uses one ounce of fuel. HOw many ounces of fuel does it use when it goes from 30 miles per hour to...

Recently read in an article that the fuel of the future was antimatter... My question is how would they contain antimatter to get it to react with only the matter that they wanted it to react with. You wouldn't be able to put it in a container, wouldn't it collide with the matter and completely...

[SOLVED] Can my fuel cell rust I just bought the THames and Kosmos Fuel Cell car and experiment kit. I used it to day and their is still a small amount of water left in the fuel cell. will this make it rust. here's a link to the car http://www.thamesandkosmos.com/store/fuelcell1.html...

Why do we not use a nuclear fuel instead of uranium that decays into stable elements? Why do we use uranium?