November 6, 2009 XPresentations begin Monday äMonday—John/Jillian; Michael/Heather; Kari/Kevin...
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Transcript of November 6, 2009 XPresentations begin Monday äMonday—John/Jillian; Michael/Heather; Kari/Kevin...
November 6, 2009November 6, 2009
Presentations begin Monday Monday—John/Jillian; Michael/Heather; Kari/Kevin Wednesday—Rachel/Valena; Dylan/Brandon; Ty/Jake; April/Blake Friday—Chris/Olivia; Thomas/Dillon; Dallas/Buzz; Lonnie/Jonathan Monday—Daisuke/Cami; Will/Zak; Jordan/Marques
Man Sees Jesus' Image on Truck WindowJim Stevens stands next to his truck that has an image on the window resembling Jesus Christ. Stevens, of Jonesborough, Tenn., said Nov. 2 that the image keeps reappearing, but he doesn't know how or why.
Alternate EnergyResources (ch. 15) Nuclear power Alternatives (‘renewables’)
Hydroelectric, geothermal, solar, wind, others
• biomass, hydogen,etc.
World EnergyWorld EnergyProductionProduction
Energy SourceEnergy Source Cost (cents/kwh)*Cost (cents/kwh)* Data, 2003Data, 2003
Solar 15.8 13.5-42.7
Hydroelectric ? 0.25-2.7
Geothermal 13.3 ?
Biomass 13.0 ?
Wind 7.5 4.6
Oil 4.4 (probably higher)
Gas 2.9 5.2-15.9
Coal 1.2 1.8-2.0
Nuclear 0.93 1.4-1.9
Average Cost of Electricity
*1995 data
http://www.nature.com/nature/journal/v444/n7119/full/444524a.html
Hydropower
Biggest non-fossil fuel resource (6% U.S.)
Electricity generationProsLimitations
Prospects for
the future?
Hydropower AlternativesHydropower Alternatives
Tidal powerRequires >5m differential
• ~100 sites worldwide
http://www.cbc.ca/canada/nova-scotia/story/2009/09/15/ns-fundy-power.htmlhttp://oceanservice.noaa.gov/education/yos/resource/JetStream/ocean/fundy_max.htm
Hydropower AlternativesHydropower Alternatives
Wave energy and ocean swellsRecent success
• PowerBuoys, Oceanlinx
http://www.oceanlinx.com/http://www.renewableenergyaccess.com/rea/news/story?id=48984http://www.greenbang.com/south-west-marine-energy-research-get-103m-boost_10667.html
http://www.nrel.gov/otec/
Hydropower Alternatives Ocean thermal energy
conversion (OTEC)Exploits temperature differenceMay provide potable water
Solar Energy Energy resource
ProsLimitations
Space heatingPassive (40-90% heating needs)
Active
http://www.passivesolarenergy.info/http://www.ehow.com/about_5050147_active-solar-heating-definition.html
Solar Energy Electricity generation (0.5%)
Photovoltaic cellsLimitations
• High costs• Low efficiency• Storage capacity• Space for collectors
http://www.actewagl.com.au/education/energy/renewableenergy/solarenergy/howsolarcellswork.aspx