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Wave Power Generation. Team 7. Team 7. Stephanie Beaton Keith Gillis Mark Larade Eric Sharp Yves Sharp Supervisor: Dr. Marek Kujath. Project. Demonstrate the ability to generate electrical power from ocean waves Design and test a device in real world conditions Evaluate the success
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Wave Power Generation Team 7
Team 7 • Stephanie Beaton • Keith Gillis • Mark Larade • Eric Sharp • Yves Sharp • Supervisor: • Dr. Marek Kujath
Project • Demonstrate the ability to generate electrical power from ocean waves • Design and test a device in real world conditions • Evaluate the success of the device
Agenda • Final Design • Simulation • Testing • Results • Analysis • Scalability • Efficiency • Budget • Conclusions • Questions
Design • Buoy Action • Power Generating Buoy & Foam Base • Return Buoy • Moorings
Design • Power Generating Buoy (Inside) • Main Pulley • Generator
Design • Power Generating Buoy (Inside) • Generator • Pulley
Design • Drive Train • Main Pulley • Shaft • Rope
Design • Drive Train • Pulley • Rope
Design • Electrical Generation and Transmission • Multi-meters • Light Bulbs
Simulation • Working Model Overview • 2D Dynamic Model • Inputs: Wave Frequency, Wave Height, Wave Drag Wind Force, Return Force, Return Drag • Wave Motion Modeled Using an Actuator: - wave height and sin(2*wave frequency*π*time) • Illustrated the motion of device and influence of wind on the operation
Simulation • Working Model Results • Limitations - Main buoy constrained - Unable to specify rope diameter - Graphical display • Ideal placement of two buoys when testing on open water
Testing • Blind Bay, NS • 15m from shore • 15m water depth • Below average wave height
Testing • Initial Leak Testing
Testing • Buoy set-up • Test 1
Testing • Electrical Measurements • Marine cable run from boat to buoy • Measured amperage, voltage • Lit light bulb
Testing Summary • Motion in Ocean Waves • Return Buoy • Functioned as expected • Cable Tangling • Not observed • Power Generating Buoy • Needed added buoyancy to follow low amplitude waves • PowerProduced
Testing • Demonstration – On Shore Pull Test
Analysis • Efficiency • From wave to buoy
Analysis • Scalability • Froude Number Ref: Wave Energy: a design challenge (Ronald Shaw)
Analysis • How big a buoy to get a kW • 5.5m ∅ • How many buoys to power a house? • 40
Analysis • Budget • Under budget • Some components were free • Locally sourced components
Conclusions • Comparison to Requirements
Conclusions • Strengths • Adaptable to different wave heights and tides • Design uses off the shelf components • Simple construction • Works well mechanically
Conclusions • Weaknesses • Difficult testing • Marine growth will require periodic cleaning • Larger waves needed • Intermittent power production • Low efficiency
Conclusions • Possible Design Changes • Use non-stretching rope for better response • Placing handles on the buoy • Test in tropical location • Place generator on ocean floor • Consider more closely the effects of friction
Acknowledgements • Dr. Kujath (Supervisor) • Dr. Hubbard (Coordinator) • Mechanical Technicians • Albert, Angus, Greg, Peter • Glyn Sharp • Sponsor: • Shell