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