1. NOTE: To change the image on this slide, select the picture and delete it. Then click the Pictures icon in the placeholder to insert your own image. H.A.W.T. Development Detailed Design Vortex Wind Systems Group M9 March 4, 2014

2. INTRODUCTION Team members Jeremy Tibbo Dan Follett Scott Guilcher Supervisors Dr. Sam Nakhla Dr. Kevin Pope

3. NOTE: To change the image on this slide, select the picture and delete it. Then click the Pictures icon in the placeholder to insert your own image. Agenda Project Definition Scope of Work Refined Environmental Study Design Considerations Blade Design Theory Airfoil Polar Data Evaluation XFLR5 Blade Design Analysis PROP-ID Going Forward

4. Project Definition Design of a small wind turbine to: Power a cottage based on light, radio and TV and fridge based on Power Evaluation 52 weekends per year Have a robust design that is optimized for and will be able to withstand Newfoundland weather To produce more power than competitors based on power curve comparisons

5. Scope of Work Completed Front End Engineering Design Website Development Research and Development HAWT Market Analysis Environmental Study Tool Development Prototype Methods Current Detailed Design PROP-ID and XFLR5 Analysis Power Output Evaluation

6. Refined Environment Study RetScreen Natural Resources Canada Utilization of RetScreen for province wide wind data Average wind speeds provided used for theoretical design consideration calculations Select locations chosen for varying data for ideal test locations

7. Design Considerations Theoretical Power OutputTheoretical Power Consumption Power Output = (CP)(A)(WPD)(GE) CP = Coefficient of Power (35%) A = Sweep Area (2 Pi R) PA = Wind power Density (.6125xS^3) S = Rated Wind Speed (11 m/s) GE = Generator Efficiency (90%) Solving for R, we get 0.31 m 500W on Ave 10 hr/day generation = 1825 kWhr/year

8. Blade Design Theory Separation of blades into several parts, integrating forces over cumulative sections taken over one complete revolution Blade Element Subdivision Inflow Factor Axial and Angular Conservation of Momentum Propeller Thrust / Power Coefficient Efficiency PropID Blade Element Theory Blade Momentum Theory

9. Airfoil Polar Data Evaluation Two initial airfoils considered: FX-84-W-140 (tip) FX-84-W-218 (root) Coefficient of Lift vs Angle of Attack Cl/Cd vs Angle of Attack

10. Blade Design Analysis Normalized chord and twist distribution 0.2 16.0000 0.15 16.0000 0.092902 16.0000 0.083612 10.0000 0.074322 5.0000 0.065031 0.0000 0.074322 -2.0000 0.065031 -3.0000 0.055741 -3.0000 0.05 -3.0000 Rotor Radius: 3.5 feet Preliminary Design Sketch Preliminary Design Power Curve

11. Blade Design Analysis

12. Going Forward Step 1 Optimization Step 2 FEA Step 3 Prototyping & Fabrication Step 4 Testing

13. NOTE: To change the image on this slide, select the picture and delete it. Then click the Pictures icon in the placeholder to insert your own image. Questions? www.vortexwindsystems.weebly.com