- Primary energy
Primary energy is energy that has not been subjected to any conversion or transformation process.
Primary energy is energy contained in raw
fuelsand any other forms of energy received by a systemas inputto the system. The concept is used especially in energy statisticsin the course of compilation of energy balances. Primary energy includes non-renewable energyand renewable energy.
Conversion to secondary energy
Primary energies are transformed in
energy conversionprocesses to more convenient forms of energy, such as electrical energyand cleaner fuels. In energy statistics these forms are called secondary energy.Secondary energy is a energy which has been transformed from one form to another. Electricity is the most common example being transfromed from coal, oil, natural gas, wind, etc.
*Kydes, Andy (Lead Author); Cutler J. Cleveland (Topic Editor). 2007. "Primary energy." In: Encyclopedia of Earth. Eds. Cutler J. Cleveland (Washington, D.C.: Environmental Information Coalition, National Council for Science and the Environment). [First published in the Encyclopedia of Earth June 1, 2006; Last revised August 14, 2007; Retrieved November 15, 2007] .
Future energy development
* [http://www.eoearth.org/article/Primary_energy The Encyclopedia of Earth] - Primary energy
Wikimedia Foundation. 2010.
Look at other dictionaries:
Primary energy — 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 gas, which can be converted to electricity;… … Energy terms
primary energy — noun The energy contained in a fuel before it is processed … Wiktionary
Primary energy consumption — 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 already been included as part of the original … Energy terms
Primary energy production — Production of primary energy. The U.S. Energy Information Administration includes the following in U.S. primary energy production: coal production, waste coal supplied, and coal refuse recovery; crude oil and lease condensate production;… … Energy terms
Primary energy consumption expenditures — Expenditures for energy consumed in each of the four major end use sectors, excluding energy in the form of electricity, plus expenditures by the electric utilities sector for energy used to generate electricity. There are no fuel associated… … Energy terms
Primary transportation — Conveyance of large shipments of petroleum raw materials and refined products usually by pipeline, barge, or ocean going vessel. All crude oil transportation is primary, including the small amounts moved by truck. All refined product… … Energy terms
Energy storage — is the storing of some form of energy that can be drawn upon at a later time to perform some useful operation. A device that stores energy is sometimes called an accumulator. All forms of energy are either potential energy (eg. chemical,… … Wikipedia
Energy elasticity — is a term used with reference to the energy intensity of Gross Domestic Product. It is the percentage change in energy consumption to achieve one per cent change in national GDP . This term has been used when describing sustainable growth in the… … Wikipedia
Primary recovery — The crude oil or natural gas recovered by any method that may be employed to produce them where the fluid enters the well bore by the action of natural reservoir pressure(energy or gravity). U.S. Dept. of Energy, Energy Information… … Energy terms
Primary coal — All coal milled and, when necessary, washed and sorted. U.S. Dept. of Energy, Energy Information Administration s Energy Glossary … Energy terms