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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
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Coal
Concentrating solar power or solar thermal power system
Energy; Coal
A solar energy conversion system characterised by the optical concentration of solar rays through an arrangement of mirrors to generate a high temperature working fluid. Also see Solar trough, Solar ...
Concentrator
Energy; Coal
A reflective or refractive device that focuses incident insolation onto an area smaller than the reflective or refractive surface, resulting in increased insolation at the point of focus.
Electrical system energy losses
Energy; Coal
The amount of energy lost during generation, transmission, and distribution of electricity, including plant and unaccounted for use.
Concession
Energy; Coal
The operating right to explore for and develop petroleum fields in consideration for a share of production inkind (equity oil).
Electricity
Energy; Coal
A form of energy characterised by the presence and motion of elementary charged particles generated by friction, induction, or chemical change.
Concessionary purchases
Energy; Coal
The quantity of crude oil exported during a reporting period, which was acquired from the producing government under terms that arise from the firm's participation in a concession. It includes ...
