Fuel

A combustible is a matter which, in the presence of Oxygène and of energy, can combine with the oxygen (which is used as Comburant) in a Chemical reaction generating Chaleur: the Combustion.

The majority of materials of origin Organique are combustible . For example, the Wood (20 000 kilojoules per kilo), the coal, the Pétrole (42 000 kilojoules per kilo for the gasoline) are fuels.

One distinguishes:

  • the fossil fuels (oil, coal, gas…), resulting from prehistoric organic matters fossilized. Their combustion rejects into the atmosphere of the Carbon dioxide (CO2) which comes from the combination of atoms of Carbone resulting from the basement and of atmospheric Oxygène. These rejections of CO2 take part in the Greenhouse effect and the current climate changes.
  • the Biocombustible S (Biocarburant S liquids, granulated wood chips or, Cereal S and other aspects of the biomass), resulting from alive plants. Their combustion presents a CO2 assessment much weaker (in so far as one replants what was cut) since it rejects atmospheric CO2 which they accumulated during their growth by Photosynthèse. It is thus a renewable energy, but not non-polluting.

One also speaks about Fuel nuclear to indicate the matters used to produce energy by fission in the nuclear plants, although it is not about a reaction of combustion.

See too

  • Fire
  • physicochemical Combustion reaction exotherme

Simple: Fuel

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