Coal

Coal

Coal is a combustible black or brownish-black sedimentary rock usually occurring in rock strata in layers or veins called coal beds or coal seams. The harder forms, such as anthracite coal, can be regarded as metamorphic rock because of later exposure to elevated temperature and pressure. Coal is composed primarily of carbon along with variable quantities of other elements, chiefly hydrogen, sulfur, oxygen, and nitrogen.

Industry: Energy

Add a new term

Contributors in Coal

Become a Contributors

Coal

Coke oven gas

Energy; Coal

The mixture of permanent gases produced by the carbonization of coal in a coke oven at temperatures in excess of 1,000 degrees Celsius.

Dual-fired unit

Energy; Coal

A generating unit that can produce electricity using two or more input fuels. In some of these units, only the primary fuel can be used continuously; the alternate fuel(s) can be used only as a ...

Coke plants

Energy; Coal

Plants where coal is carbonised for the manufacture of coke in slot or beehive ovens.

Electric hybrid vehicle

Energy; Coal

An electric vehicle that either (1) operates solely on electricity, but contains an internal combustion motor that generates additional electricity (series hybrid);or (2) contains an electric system ...

Combined hydroelectric plant

Energy; Coal

A hydroelectric plant that uses both pumped water and natural streamflow for the production of power.

Electric industry reregulation

Energy; Coal

The design and implementation of regulatory practises to be applied to the remaining traditional utilities after the electric power industry has been restructured. Reregulation applies to those ...