- Industry: Energy
- Number of terms: 18450
- Number of blossaries: 0
- Company Profile:
The preparation of a specific mineral deposit for commercial production; this preparation includes construction of access to the deposit and of facilities to extract the minerals. The development process is sometimes further distinguished between a preproduction stage and a current stage, with the distinction being made on the basis of whether the development work is performed before or after production from the mineral deposit has commenced on a commercial scale.
Industry:Energy
A readily combustible black or brownish-black rock whose composition, including inherent moisture, consists of more than 50 percent by weight and more than 70 percent by volume of carbonaceous material. It is formed from plant remains that have been compacted, hardened, chemically altered, and metamorphosed by heat and pressure over geologic time.
Industry:Energy
Determines the composition and properties of coal so it can be ranked and used most effectively.
Industry:Energy
Diesel engines are internal combustion engines that burn diesel oil rather than gasoline. Injectors are used to spray droplets of diesel oil into the combustion chambers, at or near the top of the compression stroke. Ignition follows due to the very high temperature of the compressed intake air, or to the use of "glow plugs," which retain heat from previous ignitions (spark plugs are not used). Diesel engines are generally more fuel-efficient than gasoline engines but must be stronger and heavier because of high compression ratios.
Industry:Energy
Coal analysis. Determines, on an as-received basis, the moisture content, volatile matter (gases released when coal is heated), fixed carbon (solid fuel left after the volatile matter is driven off), and ash (impurities consisting of silica, iron, alumina, and other incombustible matter). The moisture content affects the ease with which coal can be handled and burned. The amount of volatile matter and fixed carbon provides guidelines for determining the intensity of the heat produced. Ash increases the weight of coal, adds to the cost of handling, and can cause problems such as clinkering and slagging in boilers and furnaces.
Industry:Energy
The ability of a retail customer to purchase electricity or other energy sources directly from a supplier other than their traditional supplier.
Industry:Energy
The quantity of coal burned for the generation of electric power (in short tons), including fuel used for maintenance of standby service.
Industry:Energy
Use of electricity that
*is self-generated,
*is produced by either the same entity that consumes the power or an affiliate, and
*is used in direct support of a service or industrial process located within the same facility or group of facilities that house the generating equipment.
Direct use is exclusive of station use.
Industry:Energy
Amount of U.S. coal shipped to foreign destinations, as reported in the U.S. Department of Commerce, Bureau of Census, "Monthly Report EM 545."
Industry:Energy
Substitute natural gas produced synthetically by the chemical reduction of coal at a coal gasification facility.
Industry:Energy
