APES notes Chapter 15

APES notes Chapter 15 - APES notes Chapter 15 Core Case...

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APES notes Chapter 15 Core Case Study: How long will supplies of conventional oil last? o Oil, which supplies about one-third of the world’s energy, is the lifeblood of most of the world’s economies and modern lifestyles. o We use oil to grow most of our food, transport people and goods, and make most of the things we use every day---from plastics to asphalt on roads o To meet rapidly growing demand, oil companies have drilled wells on the land and at sea o They extract this oil and refine it to make gasoline, heating oil, asphalt and other products o Geologists project that known and projected global reserves of conventional oil will be 80% depleted sometime between 2050 and 2100, depending on the consumption rate o Three options Look for more oil Reduce oil use Waster or use other energy resources o Many analysts think we should vigorously pursue the three options , some say that higher prices will stimulate the search for new oil to meet global oil needs and others doubt that oil reserves can be increased enough to meet the rapidly growing future demand for oil, despite greatly increased oil exploration o If we continue to use oil reserves at the current rate of about 2.8% per year with the unlikely assumption that the rate will not increase then… Saudi Arabia, with the world’s largest known crude oil reserves, could supply the world’s entire oil needs for about 10 years The estimated reserves under Alaska’s North Slope---the largest ever found in North America---would meet current world demand for only 6 months or U.S. demand alone for 3 years The estimated reserves in Alaska’s Arctic National Wildlife Refuge would meet current world oil demand for only 1-5 months and U.S. demand for 7-24 months o An adequate annual flow of oil cannot be maintained indefinitely unless new and affordable supplies are found to replace the oil being depleted from existing reserves Almost all of the energy that heats the earth and our buildings comes from the sun at no cost to us o Without solar energy the earth’s average temperature would be low and a life would not exist
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The direct input of solar energy produces several other forms of renewable energy that can be thought of as indirect solar energy o Wind (moving air masses heated by the sun) o Hydropower (flowing water kept fluid by heat from the sun) o Biomass (solar energy converted to chemical energy and stored in trees and other plants) Commercial energy o Energy sold in the marketplace o 82% of commercial energy comes from extracting and burning nonrenewable energy resources obtained from the earth’s crust, primarily carbon-containing fossil fuels---oil, natural gas and coal o 18% of commercial energy comes from renewable energy resources--- biomass, hydropower, geothermal, wind, and solar energy Three largest users of fossil fuels are o U.S. o
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This note was uploaded on 02/17/2012 for the course 375 101 taught by Professor Strom during the Spring '08 term at Rutgers.

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APES notes Chapter 15 - APES notes Chapter 15 Core Case...

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