The data which have been supplied by the countries in original units are converted to the common unit, terajoules (TJ), by using standard conversion factors or, in the case of solids, specific factors, where available, as indicated below.Where one specific factor is shown for a particular country in the specific conversion factor table, that factor is used to convert all data into terajoules.

Where more than one specific factor is shown, production, exports and stock change data are converted into terajoules by using the factor shown in row A; import data are converted by using the factor in row B; and all other data are converted by using the factor listed in row C. The factor in row C is a weighted average of the heat values of the imported and domestically produced fuel. Where no specific factor is listed for a particular country, the standard factor is used to convert all data.

Standard conversion factors for liquid fuels are determined on the basis of the net heating value using average specific gravities for each product.

The conversion of fuelwood (solid volume, 0.333 TCE/m3) is based on an average 20-30% moisture content. Production data include the volumetric equivalent of charcoal using a factor of 6 to convert from a weight basis.

The methodology used for estimating bagasse fuel production is derived from the work done by the Economic Commission for Latin America and the Caribbean (ECLAC). The methodology selected assumes a yield of 3.26 tons of fuel bagasse of 50% humidity per ton of cane sugar produced. In most cases, cane sugar production data were extracted from the Sugar Yearbook of the International Sugar Organization (London).

For users wishing to convert the data from terajoules (TJ) to other common units: one thousand tons of coal equivalent (1,000 TCE) has traditionally been defined as comprising 29.3076 TJ, and one thousand tons of oil equivalent (1,000 TOE) as 42.6216 TJ. One calorie corresponds to 4.1868 joules and is the amount of energy which will raise the temperature of one gramme of water by one degree Celsius

STANDARD CONVERSION FACTORS

SPECIFIC CONVERSION FACTORS