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Energy Statistics Yearbook 2002

image of Energy Statistics Yearbook 2002

The Energy Statistics Yearbook 2002 is a comprehensive collection of international energy statistics prepared by the United Nations Statistics Division. It is the forty-sixth in a series of annual compilations which commenced under the title World Energy Supplies in Selected Years, 1929-1950. The principal objective of the Yearbook is to provide a global framework of comparable data on long-term trends in the supply of mainly commercial primary and secondary forms of energy. Data for each type of fuel and aggregate data for the total mix of commercial fuels are shown for individual countries and areas and are summarized into regional and world totals. This issue of the Yearbook contains data in original and common units (coal equivalent, oil equivalent, joules) for the years 1999-2002.

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Definitions

Hard coal - Coal that has a high degree of coalification with a gross calorific value above 23,865 KJlkg (5,700 kcallkg) on an ash-free but moist basis, and a mean random reflectance of vitrinite of at least 0.6. Slurries, middlings and other low-grade coal products, which cannot be classified according to the type of coal from which they are obtained, are included under hard coal. There are two subcategories of hard coal: (i) coking coal and (ii) other bituminous coal and anthracite (also known as steam coal). Coking coal is a hard coal with a quality that allows the production of coke suitable to support a blast furnace charge. Steam coal is coal used for steam raising and space heating purposes and includes all anthracite coals and bituminous coals not classified as coking coal. Houille - Charbon à haut degré de houiliification et de pouvoir calorifique brut supérieur à 23 865 kJ/kg (5 700 kcallkg), valeur mesurée pour un combustible exempt de cendres, mais humide et ayant un indice moyen de réflectance de la vitrinite au moins égal à 0,6. Les schlamms, les mixtes et autres produits du charbon de faible qualité qui ne peuvent être classés en fonction du type de charbon dont ils sont dérivés sont inclus dans cette rubrique. II y a deux sous-catégories de houille: (i) charbon à coke et (ii) autres charbons bitumineux et anthracite (également dénommé charbon vapeur). Le charbon à coke est une houille d’une qualité permettant la production d’un coke susceptible d’être utilisé dans les hauts fourneaux. Le charbon vapeur est utilisé pour la production de vapeur et pour le chauffage des locaux, et comprend tous les charbons anthraciteux et bitumineux autres que ceux classifiés comme charbons à coke.

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