190 likes | 334 Vues
This analysis explores the current energy consumption trends in the U.S., highlighting the increasing per capita usage of electricity and petroleum. It reveals that only 44% of total energy is deemed useful, and outlines the potential energy savings from proposed mileage regulations. The discussion includes calculations on saved petroleum, associated cost benefits, and practical energy-saving tips for households. Understanding energy reserves and consumption timelines is essential for shaping policies that promote sustainability and conservation.
E N D
Hydroelectric 1.0 Geothermal 0.0013 Rejected Energy 35.7 Nuclear 3.0 Natural Gas 16.4 Useful Energy 31.5 Coal 18.3 Petroleum Oil 20.0 Imported Oil 15.5 Export total is 2.1
Reserves:~1000 billion tonnes Current usage:6 billiontonnes/yr Time remaining:~World 180yrs 180years Reserves: 7000 trillion cubic feet Current usage: 180 trillion cubic feet/yr Time remaining: World 40 yrs 40 years 50 years Reserves:1000 to 2000 trillion bbls Current usage:30 billion bbls/yr Time remaining:World 33-66 yrs
In Kwh • In 1976 the population was 218,035,164 and in only 35 years the population is 307,006,550. • The average U.S. citizen in 1976 consumed roughly 8,500Kwh. • The current average U.S. citizen consumes roughly 12,000Kwh. • 218,035,164 x 8,500kwh = 1.8E12kwh in 1976 • 307,006,550 x 12,000kwh = 3.7E12kwh in 2011 • Per capita U.S. double the consumption of energy in only 35 years.
Questions…. • How much petroleum would the U.S. save if the U.S. sets a mileage regulation of 10,000miles a year?
Things to Know. • Driving population between the ages of 16-70. • Population between 16-70 is 197,500,00. • Average miles driven: 13,500. • 42 gallons in a barrel. • Average mpg for a U.S. car is 20. • Price of a barrel is $107. • Average petroleum consumption = 18,771,000 barrels/day
Equations…. • 13,500miles-10,000=3500miles saved • 3,500miles x 197,500,000= 691,250,000,000miles could be saved • 6.9125E11miles/20mpg=3.4563E10gallons could be saved • 3.4563E10gallons/42gl/barrel= 823,095,238barrels could be saved • 823,095,238barrels x 5.8E6Btu = 4.774Qbtus could be saved
More Equations… • Percent of energy saved for U.S. petroleum: 4.774QBtu/35.75QBtu = 13.4% • How many days worth of oil would be saved a year: 823,095,238barrels / 18,771,000 barrels/day = 43days • Money saved by U.S. regulation: 823,095,238barrels x $107per barrel = $88,071,000,000 a year.
Assumptions • Everyone between the ages of 16-70 drives 13500miles. • Oil barrel price averages at $107(current oil price).
Idea's for cutting down the use of energy: • Fixing leaks in your house • Changing light bulbs to compact fluorescent "squiggly bulb" • Close window drapes at night to prevent heat from exiting out the windows. • Plug cell phone, computer, game council chargers into a power strip and turn strip off when not in use.
References • http://blog.mapawatt.com/wp-content/uploads/2009/03/energy_use_pie_graph.png • http://www.sankey-diagrams.com/tag/energy/page/4/ • http://www.squidoo.com/home-energy • http://www.nfcrc.uci.edu/EnergyTutorial/energy.html • http://www.tradingeconomics.com/united-states/electric-power-consumption-kwh-per-capita-wb-data.html • http://www.fhwa.dot.gov/ohim/onh00/bar8.htm • http://www.eia.doe.gov/energyexplained/index.cfm?page=oil_home#tab2 • http://money.cnn.com/data/commodities/