- published: 27 Oct 2009
- views: 5909265
A fuel cell is a device that converts the chemical energy from a fuel into electricity through a chemical reaction with oxygen or another oxidizing agent.Hydrogen is the most common fuel, but hydrocarbons such as natural gas and alcohols like methanol are sometimes used. Fuel cells are different from batteries in that they require a constant source of fuel and oxygen to run, but they can produce electricity continually for as long as these inputs are supplied.
Welsh Physicist William Grove developed the first crude fuel cells in 1839. The first commercial use of fuel cells was in NASA space programs to generate power for probes, satellites and space capsules. Since then, fuel cells have been used in many other applications. Fuel cells are used for primary and backup power for commercial, industrial and residential buildings and in remote or inaccessible areas. They are used to power fuel cell vehicles, including automobiles, buses, forklifts, airplanes, boats, motorcycles and submarines.
Fuel is any material that stores energy that can later be extracted to perform mechanical work in a controlled manner. Most fuels used by humans undergo combustion, a redox reaction in which a combustible substance releases energy after it ignites and reacts with the oxygen in the air. Other processes used to convert fuel into energy include various other exothermic chemical reactions and nuclear reactions, such as nuclear fission or nuclear fusion. Fuels are also used in the cells of organisms in a process known as cellular respiration, where organic molecules are oxidized to release usable energy. Hydrocarbons are by far the most common source of fuel used by humans, but many other substances, such as radioactive metals, are currently used as well .
Chemical fuels are substances that release energy by reacting with substances around them, most notably by the process of oxidation.
Biofuel can be broadly defined as solid, liquid, or gas fuel consisting of, or derived from biomass. Biomass can also be used directly for heating or power—known as biomass fuel. Biofuel can be produced from any carbon source that can be replenished rapidly e.g. plants. Many different plants and plant-derived materials are used for biofuel manufacture.
Cell(s) may refer to:
Metallica - Fuel (Video)
Fuel - Hemorrhage (In My Hands)
Fuel - Shimmer
Fuel - Falls On Me
Metallica - Fuel (HD)
Fuel - Bad Day
Let's Play – Fuel
5 Nightmare Fuel Photos from Insane Asylums
Let's Play – Fuel Part 2
Updates & Geek Fuel Unboxings!
As you see, no regrets
All is over but it´s not the end
I don´t know I think I even don´t care
But when I wake up at night I still see you my friend
If you ever need anything
Don´t hesitate to ask anything
Walking alone in no man´s land
Waiting for a blessing or a helping hand to drag me away
Stay, be ready to pay for your sins
Smooth as velvet it forces me back in
Can you feel the last heart beat
All choices have been made and there´s no return
I don´t know I think I even don´t care
But when I wake up at night I feel like I´m dying
If you ever need anything
Don´t hesitate to ask anything
Walking alone in no man´s land
Waiting for a blessing or a helping hand to drag me away
Stay, be ready to pay for your sins
Smooth as velvet it forces me back in
If you ever need anything
Don´t hesitate to ask anything
If you ever need anything
Walking alone in no man´s land
Requesting for a helping hand
Walking alone in no man´s land
Waiting for a blessing or a helping hand to drag me away
Stay be ready to pay for your sins
Smooth as velvet it forces me and...
Stay I´m ready to pay for my sins