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There are many different types of fuel. Solid fuels include coal, wood and peat. All these types of fuel are combustable, they create fire and heat. Coal was burnt by steam trains to heat water to provide power. Peat and wood are mainly used for domestic and industrial heating, though peat has been used for power generation, and wood-burning steam locomotives were common in times past.
Non-solid fuels include oil and gas (both fuel types have myriad varieties). The former is widely used in the internal combustion engineAn internal combustion engine is an engine that is powered by the expansion of hot combustion products of fuel directly acting within an engine. A piston internal combustion engine works by burning hydrocarbon or hydrogen fuel that presses on a piston; an while both are used in power generation. However a fuel is not necessarily combustible. For example, in a nuclear reactionLeibstadt, Switzerland. The nuclear reactor is inside the dome-shaped containment building. A nuclear reactor is a device in which nuclear fission chain reactions are initiated, controlled, and sustained at a steady rate (as opposed to a nuclear explosion a fuel will undergo fissionIn physics, fission is a nuclear process, meaning it occurs in the nucleus of an atom. Fission is when the nucleus splits into two or more smaller nuclei plus some by-products. These by-products include free neutrons and photons (usually gamma rays).. This still provides a useful source of energyThis article is about the scientific concept. Energy use by humans is discussed in other articles''. Energy generally and qualitatively speaking, is the property (or the quantity of the property) of doing things or supplying power. The expressions energy but not via combustion. Also, in starFor alternate meanings see star (disambiguation Hubble Space Telescope of the Sagittarius Star Cloud in the Milky Way Galaxy. A star is any massive gaseous celestial body in outer space. Stars appear as shining points in the nighttime sky that twinkle becs (and our sun), hydrogenhydrogen helium H Li Full table General Name, Symbol, NumberHydrogen, H, 1 Chemical series nonmetals Group, Period, Block 1 (IA), 1 , s Density, Hardness 0. 0899 kg/m3, NA Appearance colorless Atomic properties Atomic weight 1. 00794 amu Atomic radius (ca is the fuel for the nuclear fusionIn physics, nuclear fusion (a thermonuclear reaction is a process in which two nuclei join, forming a larger nucleus and releasing energy. Nuclear fusion is the energy source which causes stars to shine, and hydrogen bombs to explode. It takes considerabl.
In the bodies of most animals, the fuel sources are carbohydrateCarbohydrates (literally hydrates of carbon are chemical compounds that act as the primary biological means of storing or consuming energy, other forms being fat and protein. Relatively complex carbohydrates are known as polysaccharides. Carbohydrates are, fat, protein, which supplies the energy for muscles.
Main article: Fuel value.
The fuel value is the quantity of potential energy in a food or other substance.
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