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World Energy Outlook 2006

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Dimethyl Ether (DME)<br />

Clear, odourless gas currently produced by dehydration of methanol from<br />

natural gas, but which can also be produced from biomass or coal.<br />

Ethanol<br />

Ethanol is an alcohol made by fermenting any biomass high in carbohydrates.<br />

Today, ethanol is made from starches and sugars, but advanced technology will<br />

allow it to be made from cellulose and hemicellulose, the fibrous material that<br />

makes up the bulk of most plant matter.<br />

Ethanol Gel<br />

Flammable blended product which can be combusted cleanly in small<br />

cookstoves and heaters.<br />

Gas<br />

Includes natural gas (both associated and non-associated with petroleum<br />

deposits but excluding natural gas liquids) and gas-works gas.<br />

Gas-to-Liquids (GTLs)<br />

Fischer-Tropsch technology is used to convert natural gas into synthesis gas<br />

(syngas) and then, through catalytic reforming or synthesis, into very clean<br />

conventional oil products. The main fuel produced in most GTL plants is diesel.<br />

Hard Coal<br />

Coal of gross calorific value greater than 5 700 kcal/kg on an ash-free but moist<br />

basis and with a mean random reflectance of vitrinite of at least 0.6. Hard coal<br />

is further disaggregated into coking coal and steam coal.<br />

Heavy Petroleum Products<br />

Heavy petroleum products include heavy fuel oil.<br />

Hydro<br />

Hydro refers to the energy content of the electricity produced in hydropower<br />

plants, assuming 100% efficiency.<br />

Light Petroleum Products<br />

Light petroleum products include liquefied petroleum gas (LPG), naphtha and<br />

gasoline.<br />

Middle Distillates<br />

Middle distillates include jet fuel, diesel and heating oil.<br />

Annex C – Abbreviations and Definitions<br />

575<br />

© OECD/IEA, 2007<br />

C

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