Earth_122_Ch12_notes

Earth_122_Ch12_notes - Introduction to Environmental...

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Introduction to Environmental Science: 12. Conventional Energy Earth 122 Prof. Walter A. Illman
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onventional Energy Conventional Energy I’m not blindly opposed to progress; I’m opposed to blind rogress progress. Dave Brower
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bjectives Objectives nderstand the units of energy Understand the units of energy. Know the basics of different conventional urces of energy including wood fossil fuels sources of energy, including wood, fossil fuels, hydroelectric, and nuclear power. Compare the environmental benefits and costs of each type of conventional energy discussed.
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Outline Energy History Energy Sources How Is Energy Used? Wood and Biomass oal Coal Oil atural Gas Natural Gas Hydroelectric Nuclear Power Fission Reactors Waste Management Fusion
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HAT IS ENERGY? WHAT IS ENERGY? ork pplication of force through a distance. Work Application of force through a distance. Energy The capacity to do work. alorie mount of energy necessary to heat 1 Calorie Amount of energy necessary to heat 1 gram of water 1 o C. Joule Amount of work done when a force of 1 newton is exerted over 1 meter. Heat (transfer of energy due to temp. differences) Power Rate at which work is done.
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nergy History Energy History Muscle power provided by domestic animals has been important since dawn of agriculture 10,000 years ago. orld oil use peaked in 1979 World oil use peaked in 1979. Oil prices rose ten fold in 1970s. rly 1980s saw increased interest in Early 1980s saw increased interest in conservation and renewable energy. Oil glut in mid 1980s caused prices to fall. 2004 price over $50 a barrel 2008–price over $140 a barrel; now $35 a barrel
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urrent Energy Sources Current Energy Sources ssil fuels currently provide about 85% of all Fossil fuels currently provide about 85% of all commercial energy in the world. ydroelectric dams supply about 6% of Hydroelectric dams supply about 6% of commercial power. uclear power makes up about 4 % of commercial Nuclear power makes up about 4 % of commercial power, but about 20% of electric power in more developed countries.
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Worldwide Commercial Energy Production
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er Capita Consumption Per Capita Consumption ichest 20 countries consume nearly 80% of Richest 20 countries consume nearly 80% of natural gas, 65% of oil, and 50% of coal roduction annually production annually. On average, each person in the U.S. and Canada ses more than 300 GJ of energy annually. uses more than 300 GJ of energy annually. In poorest countries of the world, each person generally consumes less than one GJ annually.
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OW IS ENERGY USED? HOW IS ENERGY USED? rgest share of energy used in Canada is Largest share of energy used in Canada is consumed by industry (36.5%).
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This note was uploaded on 10/31/2011 for the course EARTH 122 taught by Professor Calia during the Spring '08 term at Waterloo.

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Earth_122_Ch12_notes - Introduction to Environmental...

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