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

Securitization

Energy; Coal

A proposal for issuing bonds that would be used to buy down existing power contracts or other obligations. The bonds would be repaid by designating a portion of future customer bill payments. ...

Transmission and distribution loss

Energy; Coal

Electric en¬ergy lost due to the transmission and distribution of electricity. Much of the loss is thermal in nature.

Noload loss

Energy; Coal

Power and energy lost by an electric system when not operating under demand.

Primary energy consumption

Energy; Coal

Consumption of primary energy. (Energy sources that are produced from other energy sources¿e.g., coal coke from coal¿are included in primary energy consumption only if their energy content has not ...

Thermocouple

Energy; Coal

A device consisting of two dissimilar conductors with their ends connected together. When the two junctions are at different temperatures, a small voltage is generated.

Primary energy

Energy; Coal

Energy in the form that it is first accounted for in a statistical energy balance, before any transformation to secondary or tertiary forms of energy. For example, coal can be converted to synthetic ...

Round test mesh

Energy; Coal

A sieving screen with round holes, the dimensions of which are of specific sizes to allow certain sizes of coal to pass through while retaining other sizes.