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Renewable Energy Designs

Renewable Energy Designs. Renewable Commuter Car. Proposal Presentation December 1, 2003. www.cet.nau.edu/~pdd3/solar. Renewable Energy Designs. Krystle Bobby Dave Justin Elliott Rubino Olsen Dufek Smith Rector.

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Renewable Energy Designs

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  1. Renewable Energy Designs Renewable Commuter Car Proposal Presentation December 1, 2003 www.cet.nau.edu/~pdd3/solar

  2. Renewable Energy Designs Krystle Bobby Dave Justin Elliott Rubino Olsen Dufek Smith Rector

  3. Overview • We are working in conjunction with our sponsor to develop a proof-of-concept for a sustainable renewable energy commuter vehicle.

  4. Sponsor • Novakinetics • Jim Corning • MSME from MIT • Composite Materials • Aerospace and • Optics • Solar Commuter Vehicle • Faculty Advisor: Dr. Albert Gossler

  5. Project Description Problem Statement Develop a proof-of-concept for a stand-alone commuter vehicle that will be used for the purpose of traveling to work for a range of 15 miles per day in typical Flagstaff environmental and road conditions that will be completely sustainable from renewable energies.

  6. Project Requirements • Energy Collection • Collect enough to drive 15 miles/day • 80-100 ft2 solar cells • Exert enough energy to drive in typical Flagstaff Conditions • Energy Storage • Store enough to operate for 3 days • Self Sustaining • Energy Expenditures • Maintain 40 mph • Acceleration bursts to 70 mph • Maintain speed limit up Cedar Hill

  7. Project Specifications • Flagstaff, Arizona road and environmental conditions • Vehicle fits into one standard parking space (9’x18’) • Completely sustainable from renewable energies (3 days) • Ergonomics, accessories, manufacturing, safety, aerodynamics, and ease of operation

  8. Project Deliverables • 3-D CAD modeling of sub-systems and final assembly of sub-systems • Performance Analysis • Computational Fluid Dynamics (CFD) • Weight • Efficiency • Finite Element Analysis (FEA) • Sub-system prototypes (real or virtual)

  9. Gantt Chart

  10. Milestones Fall 2003 • 11/3 Webpage • 12/1 Proposal Document/Presentation • 12/31 Finished Design of 2 sub-systems Spring 2004 • 2/23 Final Design of sub-systems • 4/12 Final Design Document • 4/23 Conference Presentation

  11. Deployable Array • Possible $3,500 for proposed 100 ft² • Could weigh in around 200 lbs • Less than 1” thick • Power- Rated at over 1 kW

  12. Motor / Drive System • DC Brushless Motor ( 30-40 HP) • Continuously Variable Transmission (CVT) • High Efficiency (95%) • Motor cost around $1,000

  13. Suspension • Front Suspension • Trailing Arms • Simple • More space for regenerative braking system • Independent • Rear Suspension • Swing Arm • Simple • Narrow for vehicle aerodynamics

  14. Storage System • Batteries • Nickel Metal Hydride (NiMH) • Reliable • Heavy • Available

  15. Frame • Tubular steel design • Carbon/Chromoly steel • Understand material properties • Simple to form/weld • Needs to support about 1,200 lbs • Majority of weight is from Batteries • Provide base for aerodynamic composite shell • Budget $520 for materials www.wsc.org.au/solarcars.htm

  16. Aerodynamics • Three types of drag • Induced Drag • Pressure gradient from a nonsymmetrical design • Pressure Drag • Boundary layer separation • Accounts for most of drag force • Skin Friction Drag • Rubbing of fluid occurs on any design • Minimal drag force at city driving speeds

  17. Ergonomics • Heater • Efficient Heat pump • Stereo • 15 watt cd player • Chair • Plastic with cover

  18. Ergonomics, Cont. • Heater • Uses heat pump cycle • Can be reversed to use as an air conditioner • Basically pumps heat from the cold air into the inside air of the vehicle

  19. Steering • Basic rack and pinion setup • Torque input from driver • No power steering needed due to the weight of the vehicle

  20. Regenerative Brakes • Magnetic Brakes • Create opposing magnetic fields to resist motion • Recaptures momentum as electrical energy • Recharges and extends driving range of batteries

  21. State of the Art Research Sources • http://www.sunraycer.com • “Electric Driving Support.”Continental Temic • “Regenerative Braking”10 Oct 2003 http://www.ctts.nrel.gov/analysis/advisor_doc/regen.htm • http://www.brinkdynamics.nl/technical/dvc.html • “Lighter, Smaller, Stronger”.Automotive Engineer. 07/2001, Vol. 26 Iss 6 p16

  22. Overall Team Hours • 307.5 Total Project Hours • 180 Team Hours

  23. Project Hours

  24. Budget

  25. Conclusion In conclusion, we have built a good base of research and client contact that will help us achieve a successful project, and look forward to sharing our progress throughout the year.

  26. Future Plans • Keep in close contact with Jim Corning • Continue to refine sub-system designs • More SOTA research • Complete two sub-system designs by Dec. 31 • Solid modeling of sub-systems • Related analyses for sub-systems

  27. Questions Any questions?

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