Power Hungry

Power Hungry by Robert Bryce Read Free Book Online

Book: Power Hungry by Robert Bryce Read Free Book Online
Authors: Robert Bryce
http://www.bp.com/liveassets/bp_internet/globalbp/globalbp_uk_english/reports_and_publications/statistical_energy_review_2008/STAGING/local_assets/downloads/pdf/statistical_review_of_world_energy_full_review_2008.pdf .

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    TABLE D.5 World’s Most Hydro-Dependent Countries

    Source : BP Statistical Review of World Energy 2008, http://www.bp.com/liveassets/bp_internet/globalbp/globalbp_uk_english/reports_and_publications/statistical_energy_review_2008/STAGING/local_assets/downloads/pdf/statistical_review_of_world_energy_full_review_2008.pdf .

GLOSSARY
    Barrel of oil: A common measure of energy that is equal to 42 gallons of crude, 5.8 million Btu, or 5.8 gigajoules. In power terms, production of 1 barrel of oil per day is equal to about 30 horsepower, or 22,150 watts.
    Btu: British Thermal Unit, a unit of energy christened in 1849 by James Prescott Joule, who, like James Watt, later had a unit of energy named for him. One Btu is the quantity of heat required to raise the temperature of 1 pound of water by 1 degree Fahrenheit at the temperature at which water has its greatest density (39 degrees Fahrenheit). Put another way, 1 Btu is approximately equal to the energy released in the burning of a wooden match. Also, 1 Btu = 1.055 kilojoules.
    Energy: The ability to do work; also, a quantity or volume of fuel. A kilowatt-hour is a measure of energy.
    Energy density: The amount of energy that can be contained in a given unit of volume, area, or mass. Common energy density metrics include Btu per gallon and joules per kilogram.
    Horsepower (hp): A unit of power coined by inventor James Watt, who deemed that 1 horsepower was equal to 33,000 foot-pounds per minute. A more modern definition: 1 horsepower = 746 watts. Car engine power ratings are often listed in both watts and horsepower.
    Joule (J): A unit of energy, whereby 1 joule = 1 watt-second; the energy exerted by the force of 1 newton acting to move an object 1 meter. Depending on the amount of energy, one can use millijoules, kilojoules, megajoules, and so on, as with any SI unit.
    Power: The rate at which work gets done; a measure of energy flow. Power = energy/time. A kilowatt is a measure of power.
    Power density: The amount of power that can be harnessed in a given unit of volume, area, or mass. Examples of power density metrics include: horsepower per cubic inch, watts per square meter, and watts per kilogram. When comparing renewable energy sources to other sources, the most telling metric is perhaps watts per square meter.
    Quad: A unit used in the United States to measure large quantities of energy. A quad is 1 quadrillion (10 15 ) Btu. Annual U.S. energy use totals about 100 quads, or 100 exajoules (EJ). In 2006, global energy use was about 472 quads (472 EJ).
For reference, 1 quad is approximately equal to 172 million barrels of oil equivalent, or 1 trillion cubic feet of natural gas, or 1 exajoule (EJ).
    Ton of oil: A common measure of energy equal to 7.33 barrels of oil. A ton of oil is equal to approximately 40 million Btu, 42 gigajoules (GJ), or 12 megawatt-hours of electricity.
    W att ( W ): A unit of power. Car engine power ratings are often listed in both watts and horsepower. By definition, 1 watt = 1 joule per second. Depending on the amount of power, one can use milliwatts, kilowatts, megawatts, and so on, as with any SI unit.

BIBLIOGRAPHY
    Areva. All About Nuclear Energy: From Atom to Zirconium . Paris: Areva, 2008.
    Barre, Bertrand, and Pierre-Rene Bauquis. Understanding the Future: Nuclear Power . Strasbourg: Editions Hirlé, 2007.
    Behravesh, Nariman. Spin-Free Economics: A No-Nonsense Nonpartisan Guide to Today’s Global Economic Debates . New York: McGraw Hill, 2009.
    Bradley, Robert L., Jr. Capitalism at Work: Business, Government, and Energy . Salem: M&M Scrivener Press, 2009.
    â€”——. Oil, Gas & Government: The US Experience . Lanham, MD: Rowman and Littlefield, 1996.
    Bradley, Robert L., Jr., and Richard W. Fulmer.

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