Transcript Slide 1
Series and Parallel Circuits Series circuit: Current is the same in all elements (voltages add) Parallel circuit: Voltage is the same in all elements (Currents add) US Electrical power http://www.eia.doe.gov/fuelelectric.html Look at the text, which Shows an interesting Distinction between Utility producers and Non-utility producers In terms of this mix. (p 319) http://www.eia.doe.gov/cneaf/electricity/epa/epat4p1.html see for Information on actual energy consumed by fuel type. US Electrical Power Generation North American Power Plants http://en.wikipedia.org/wiki/Electric_power_transmission Another interesting site: http://carma.org/ will give you more info on these Plants (and indeed 50,0000 others worldwide!). US Electrical power http://www.eia.doe.gov/cneaf/electricity/epa/epa.pdf#page=15 Possible topics for last 2 weeks (votes on first day of class) • • • • • • Global warming (class discussion). Nuclear Power (fission/fusion) (24) Hydrogen economy (Fuel Cells) 22) Fuel Cells (11) Unconventional Fossil (9) Increasing efficiency; appliances, lights, etc. • Electrical Grid Faraday’s Law • “A coil of wire experiences an electromotive force that is proportional to the rate of change of the magnetic flux passing through the loop.” • Magnetic flux is the product of the magnetic field strength times the area it passes through projected onto the field direction (just like solar flux on a panel). B Aperp Typical generating station http://www.wvic.com/how-gen-works.htm Web site also has a good schematic of a generator in action Typical Steam generator U. Cincy Cogeneration Plant Annually produces: 245M kWh Heat to 9Msq.ft of bldg space http://www.uc.edu/facmgmt/utility.asp Combined Cycle plants http://www.cogeneration.net/Combined_Cycle_Cogeneration.htm Combined cycle/Carbon sequestration plant http://alt-e.blogspot.com/ Electrical distribution/transmission Transmission/distribution lines Some High Voltage transmission lines are DC not AC (see right), but they look pretty much the same. http://www.osha.gov/SLTC/etools/electric_power/illustrated_glossary/transmission_lines.html 2003 Blackout before and after http://en.wikipedia.org/wiki/2003_North_America_blackout Wind Turbines http://www.afm.dtu.dk/wind/turbines/img0003.jpg Wind Energy http://www.windpower.org/en/tour/wres/euromap.htm An extensive site for Wind Information!! Basics of a Wind Turbine http://www.nrel.gov/wind/animation.html Web site for movie on wind turbine construction http://www.gepower.com/businesses/ge_wind_energy/en/image_gallery/index.htm Altamont Pass (CA) http://www.ilr.tu-berlin.de/WKA/windfarm/altcal.html 6000 turbines, built 1980’s San Gorgonio Pass (CA) http://www.ilr.tu-berlin.de/WKA/windfarm/sgpcal.html 3500 turbines, built 1980’s ITAIPU (Brazil/Paraguay) http://www.solar.coppe.ufrj.br/itaipu.html Three Gorges Dam (China) http://www.physicstoday.org/vol-59/iss-12/p38.html ITAIPU (Brazil/Paraguay) http://www.solar.coppe.ufrj.br/itaipu.html