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

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Coal

Black liquor

Energy; Coal

A by product of the paper production process, alkaline spent liquor, that can be used as a source of energy. Alkaline spent liquor is removed from the digesters in the process of chemically pulping ...

Blending plant

Energy; Coal

A facility that has no refining capability but is either capable of producing finished motor gasoline through mechanical blending or blends oxygenates with motor gasoline.

Amortisation

Energy; Coal

The depreciation, depletion, or charge-off to expense of intangible and tangible assets over a period of time. In the extractive industries, the term is most frequently applied to mean either (1) the ...

Block-rate structure

Energy; Coal

An electric rates chedule with a provision for charging a different unit cost for various increasing blocks of demand for energy. A reduced rate may be charged on succeeding blocks.

Ampere

Energy; Coal

The unit of measurement of electrical current produced in a circuit by 1 volt acting through a resistance of 1 Ohm.

Boiler

Energy; Coal

A device for generating steam for power, processing, or heating purposes; or hot water for heating purposes or hot water supply. Heat from an external combustion source is transmitted to a fluid ...

Amr

Energy; Coal

Automated metre Reading is a term denoting electricity metres that collect data for billing purposes only and transmit this data one way, usually from the customer to the distribution utility.