1 / 10

The Electric Boat Challenge: Is Solar Power Better than Gasoline Power? Or does H 2 Work Best?

The Electric Boat Challenge: Is Solar Power Better than Gasoline Power? Or does H 2 Work Best?. Dr. Andrew Zborowski, Ph.D. and Frank R. Leslie, BSEE, MS Space Technology 1/14/2005. 1. Abstract. Identical trolling motors Similar hulls Identical batteries Differing energy sources

oprah
Download Presentation

The Electric Boat Challenge: Is Solar Power Better than Gasoline Power? Or does H 2 Work Best?

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. The Electric Boat Challenge: Is Solar Power Better than Gasoline Power?Or does H2 Work Best? Dr. Andrew Zborowski, Ph.D. and Frank R. Leslie, BSEE, MS Space Technology 1/14/2005

  2. 1. Abstract • Identical trolling motors • Similar hulls • Identical batteries • Differing energy sources • What is to be demonstrated? Abstract Solar Gasoline What speeds and distances result from solar & gasoline, etc. sources?

  3. 2. Hull Forces • Drag force is proportional to speed squared • Drag force is balanced by motor force resulting in equilibrium speed • Different hull shapes result in different maximum speeds Hull Forces Fh = k • S2 Fm = Fh Fm Fh Moving this way --> Speed limited by forces

  4. 3. Motor Thrust • Measure thrust force with “open water” around prop (bollard test) • Plot relationships • Compare motors • Specification of 30 pounds thrust Motor Thrust Fm Load Resistance Force,Current Voltage What is “best” load?

  5. 4. Travel Energy • Energy = Power • time • E = P • t • Define race end • Define time & distance V = d/t Travel Energy Distance, d What energy is required?

  6. 5. Energy Storage • Battery depletion rate • Are batteries truly identical? • Full charge at 12.80 volts (TBR; to be reviewed) • Discharge load of motor affects available ampere-hours • Stop at 10.5V to preserve battery life Energy Storage = ? 10.5 V Voltage, E Time, t Trade power vs. energy

  7. 6a. Energy Sources • Internal Combustion Engine (ICE) burning gasoline and oil mix charges battery • Requires fuel • Solar Panel charges battery • Requires sun Energy Sources Gasoline ICE Gasoline Crudeoil Solar or PV What else to use?

  8. FuelCell 6b. Energy Sources • Fuel Cell • Hydrogen & air in • Water & Electricity out • ~12Vdc; 1000 watts • Leslie’s Pedal Cycle • Requires food in • Biomass to mechanical to electrical energy • 14 volts @ 6 amps charges battery Energy Sources 12Vdc Hydrogen Fuel Cell Hydrogen Pedal Cycle Which to use?

  9. 7. Race Conditions • Ready to race? • Good weather • Calm water • Wind below 4 knots • Batteries charged • Known weight • Straight, sheltered course • Side-by-side start • End defined by battery voltage less than 10.5 volts per digital multimeter or H2 tank empty Race Conditions Perhaps a little slower

  10. 8. Potential Conclusions and Findings • Match results against theory • Explain discrepancies • Data analysis shows that . . . ? • Recommendations for the following classes --- “Lessons Learned” • Create report and present results Potential Conclusions and Findings What’s next?

More Related