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Miscellaneous Work File on Renewable Energy

Miscellaneous Work File on Renewable Energy. Frank R. Leslie, B. S. E. E., M. S. Space Technology 3/19/2003, Rev. 1.4 fleslie @fit.edu; (321) 674-7377 www.fit.edu/~fleslie f.leslie @ieee.org; (321) 768-6629. Overview.

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Miscellaneous Work File on Renewable Energy

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  1. Miscellaneous Work File on Renewable Energy Frank R. Leslie, B. S. E. E., M. S. Space Technology 3/19/2003, Rev. 1.4 fleslie @fit.edu; (321) 674-7377 www.fit.edu/~fleslie f.leslie @ieee.org; (321) 768-6629

  2. Overview • Renewable energy is sustainable indefinitely, unlike long-stored energy from fossil fuels that will be depleted • Renewable energy from wind, solar, and hydroelectric power emits no pollution or carbon dioxide (although the building of the components does) • Biomass combustion is also renewable, but emits CO2 and pollutants • Nuclear energy is not renewable, but sometimes is treated as though it were because of the long depletion period • Sustainable energy comes from the sun or from tidal forces of the moon and sun; usually implies not using it faster than can be replenished Revised 021003

  3. Energy Considerations for 2050 • Fossil-fuel energy will deplete in the future; took millions of years to create that much fuel • US oil production peaked about 1974; world energy will peak about 2004-9 or so • Renewable energy will eventually become mandatory, and our lifestyles may change • Transition to renewable energy must occur well before a crisis occurs Revised 020115

  4. Energy Categories • Sustainable means using less than is renewed; if water is withdrawn from a dam faster than it is refilled, the level drops and power is lessened Revised 030109

  5. NP NP SP SP 11.4.3.1 Solar Module Tilt NP 23.5° SP 23.5° NP SP • Modules are tilted at latitude to be aimed at sun on equinoxes; at solstices, they are offset by latitude angle 030217

  6. 11.4.3.1.2 Battery Capacity

  7. PVModule Controller Battery Inverter Load 11.4.3.1 Battery Capacity • For four days, the battery must supply 1 A to the load requiring 592 Ah capacity 030217

  8. Lift Force RotationTorque Resultant Force Angle of Attack RotationalVelocity Relative Wind Thrust 2/3 x Wind velocitydue to slowed wind Drag Force Blade Pitch Chord Line 12.3 Prop vs. Rotor • For f 030319

  9. Wind Wind 12.3 Prop vs. Rotor Lift AirplanePropeller CW WT Rotor Driven Motion Motion Lift AirplanePropellerFlipped Over Rotor “lift” pulls rotor around CCW WT Rotor Weak Motion No good for rotor Poor Lift Motion Lift • An airplane propeller won’t work as a wind turbine rotor 030319

  10. Northwestern Iowa has Wind http://www.iowafarmer.com/03/030426pdf/030426iftne.pdf 040223

  11. Composite Wind and Solar Map http://www.energycommission.org/ewebeditpro/items/O82F4682.pdf 041214

  12. Conclusion • Renewable energy offers a long-term approach to the World’s energy needs • Economics drives the selection process and short-term (first cost) thinking leads to disregard of long-term, overall cost • Increasing oil, gas, and coal prices will ensure that the transition to renewable energy will occur ― How will we choose to do it? Revised 020115

  13. References: Books • Brower, Michael. Cool Energy. Cambridge MA: The MIT Press, 1992. 0-262-02349-0, TJ807.9.U6B76, 333.79’4’0973. • Duffie, John and William A. Beckman. Solar Engineering of Thermal Processes. NY: John Wiley & Sons, Inc., 920 pp., 1991 • Gipe, Paul. Wind Energy for Home & Business. White River Junction, VT: Chelsea Green Pub. Co., 1993. 0-930031-64-4, TJ820.G57, 621.4’5 • Patel, Mukund R. Wind and Solar Power Systems. Boca Raton: CRC Press, 1999, 351 pp. ISBN 0-8493-1605-7, TK1541.P38 1999, 621.31’2136 • Sørensen, Bent. Renewable Energy, Second Edition. San Diego: Academic Press, 2000, 911 pp. ISBN 0-12-656152-4. Revised 020115

  14. References: Websites, etc. awea-windnet@yahoogroups.com. Wind Energy elist awea-wind-home@yahoogroups.com. Wind energy home powersite elist geothermal.marin.org/ on geothermal energy mailto:energyresources@egroups.com rredc.nrel.gov/wind/pubs/atlas/maps/chap2/2-01m.html PNNL wind energy map of CONUS windenergyexperimenter@yahoogroups.com. Elist for wind energy experimenters www.dieoff.org. Site devoted to the decline of energy and effects upon population www.ferc.gov/ Federal Energy Regulatory Commission www.hawaii.gov/dbedt/ert/otec_hi.html#anchor349152 on OTEC systems telosnet.com/wind/20th.html www.google.com/search?q=%22renewable+energy+course%22 solstice.crest.org/ dataweb.usbr.gov/html/powerplant_selection.html Revised 020115

  15. Thank you! Questions? ? ? My website: my.fit.edu/~fleslie Roberts Hall Weather: www.fit.edu/wx_fit/roberts/RH.htm DMES Meteorology Webpage: www.fit.edu/wx_fit/observations_&_forecasts/real-time_data/fitroofdata.php 080101

  16. Slide stockpile follows! Older slides follow this one. Look at these if you have interest or time. It’s difficult to decide what to leave out of the lecture to save time!

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