Energy: Powering Society Classification of Natural Resources by Availability Reserve - We know it exists and it can be extracted with existing technology.

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Presentation transcript:

Energy: Powering Society

Classification of Natural Resources by Availability Reserve - We know it exists and it can be extracted with existing technology Resource - Known or believed to exist but not exploitable today (for economic, political of technological reasons) 1 trillion- 2.3 trillion barrels

Classification of Natural Resources by how it is produced Renewable - Resource that is created as fast as it it consumed. Nonrenewable - Resource that is created slowly - consumed faster than it forms. Fossil fuels, metals, nuclear power, etc. Trees, fish, sunlight, wind, etc.

Review: Energy Units Joule (J) = Energy needed to lift 1 kg weight by 0.1 meter (about the energy to lift an apple over your head) calorie (cal) = Energy needed to heat 1 g water by 1°C (Note” Calories (Cal) in food are equal to 1000 calories (cal) British Thermal Unit (BTU) = Energy needed to heat 1 pound of water 1°F (1 BTU = 950 Joules)

Review: Power Rate of energy use Watt (Joule/second) Kilowatt-Hour (kwh) =1000 watts per hour Centralia Coal Power Plant = 1,330 Megawatts

Review: Laws of Nature Conservation of Matter 1st Law of Thermodynamics (Conservation of Energy) 2nd Law of Thermodynamics (Entropy)

Energy Resources: History Slave Labor Animal Labor

Energy Resources : History Wood Wind/Water

Energy Resources : History Coal Oil

World Fuel Consumption (1800 to1990 & …) Consumption (Millions of metric tons of oil equivalent) ,90030,000

U.S. Energy Use 2.76 x kwh/yr (about 100,000 kwh/person/yr)

U.S. Energy Use Industrial

U.S. Energy Use Transportation

U.S. Energy Use Commercial/Residential

U.S. Energy Use Consumption Measured in quadrillions (10 15 ) BTU November 2005 % Change over November 2004 Petroleum3.34 Natural Gas Coal Hydro Nuclear Total Note: There is a 6 month delay on energy data

U.S. & the World

Primary Energy is Converted into More Usable forms: Secondary Energy Primary Oil, Coal, Solar Secondary Electricity

Steam Engine & Internal Combustion Engine

Secondary Energy: Electricity Magnet Electricity

The “Grid”

Energy is lost… …but electricity is versatile.

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