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Hydrogen fuel cells power the shuttle's electrical systems, producing a clean byproduct - pure water, which the crew drinks. A fuel cell combines hydrogen and oxygen to produce electricity, heat, and water.
Fuel cells are also much cleaner than traditional power generation; a fuel cell power plant using natural gas as a hydrogen source would create less than one ounce of pollution (other than CO 2) for every 1,000 kW·h produced, compared to 25 pounds of pollutants generated by conventional combustion systems.
Due to the high energetic content of hydrogen and high efficiency of fuel cells (55%), this great technology can be used in many applications like transport (cars, buses, forklifts, etc) and backup power to produce electricity during a failure of the electricity grid.
A hydrogen vehicle is a vehicle that uses hydrogen as its onboard fuel for motive power. Hydrogen vehicles include hydrogen-fueled space rockets, as well as automobiles and other transportation vehicles.
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Hydrogen fuel cells are commonly used in multiple sets, which can produce vast amounts of electric power. Cell designs vary from small cells the size of a car battery to larger industrial size cells, which may someday power entire cities.
Hydrogen Power. Hydrogen is the first element in the Periodic Table mainly because it is the lightest element known to man. Its structure is also very simple because one hydrogen atom only contains one proton and one electron as compared to other elements which contain two or more subatomic particles.
Hydrogen can be used in fuel cells to generate power using a chemical reaction rather than combustion, producing only water and heat as byproducts. It can be used in cars, in houses, for portable power, and in many more applications.
A fuel cell converts the chemicals hydrogen and oxygen into water, and in the process it produces electricity. The other electrochemical device that we are all familiar with is the battery . A battery has all of its chemicals stored inside, and it converts those chemicals into electricity too.