1. Vertical Axis Wind Turbine
Lindsay Pellhum
Jordan Showalter
Derek Storms
Joseph Trosclair

2. Scope Of The Project
To harness and utilize the available wind resources to help the Sustainability Center, located on north campus, in their goal of using renewable energy to one day power Greek Village. This project will also demonstrate our knowledge gained in the MET program at SLU by designing and building a vertical axis wind turbine (VAWT). As wind energy is becoming more prevalent, it is important to try to design more efficient means of harnessing such energy. It is the goal of this project to do that by applying basic VAWT principles with a structure able to withstand hurricane winds and a continuous variable transmission (CVT) that will improve longevity and efficiency.

4. What Is A VAWT?
A wind turbine mounted on a structure with the main parts typically located at or near the base of the structure
Main parts of the VAWT can be at the base of the turbine
Do not need wind orientation or wind sensing equipment
Are able to generate power at lower wind speeds
The blades of the turbine spin on a vertical axis
Requires a gearbox/generator
Blades are mounted vertically

5. VAWT Examples
Darrieus
Helical
Venturi

6. Benefits Of A VAWT Lower wind speed needed to generate energy
Lower noise production
Lower rotating speed
Easier maintenance
Take up less space
No dizziness effect
Better survivability
Lower failure rate
Omnidirectional
Fewer parts
Less cost

7. Drawbacks Of A VAWT Stress on the blades due to centrifugal force
Less cost effective in large scale use
Less stable at higher altitudes
Fatigue on the blades
Lower lifespan
Less efficient

8. Hammond Wind Speed Averages
Highest average wind speed of 6mph around March 2 with average daily max speed of 14mph
Lowest average wind speed of 2mph around July 24 with average daily max speed of 10mph
Yearly average wind speed of 0-14mph
Wind rarely goes above 20mph

9. Hammond Wind Speed

10. Helical Turbine Blades
Great solution for energy production in harsh weather conditions
Can combine art and functionality to be aesthetically pleasing
Intended for inland and marine environments
Helical design helps distribute loads evenly
Very quiet and safe in populated areas
Energy production at 5m/s (11.2mph)
Survivability of 60m/s (134.2mph)
Omnidirectional

11. Venturi Turbine
Utilizes the Venturi effect to increase wind- speed by funneling wind
Energy production at as little as 2m/s (4.5mph)
Survivability of winds up to 40m/s (89.5mph)
Funnel allows omnidirectional wind capture
Allows lower wind-speed to be amplified
Modeled by the Bernoulli Principal
HAWT / VAWT hybrid

12. CVT
Tuning is based on flyweight weight, & primary / secondary spring rates
As wind-speed increases, CVT changes gear ratio up to keep generator at desired RPM
The use of a CVT for speed power amplification will be used
Allows for low gear power transmission at slow wind-speed
Requires little maintenance
Cost efficient

13. Timeline of Tasks Tasks Time VAWT Design Oct 9 – Oct 15
Turbine/CVT Design
Oct 16 – Oct 22
Energy Storage Design
Oct 23 – Oct 29
Structural Analysis
Oct 30 – Nov 5
Turbine Analysis
Nov 6 – Nov 12
CVT Analysis
Nov 13 – Nov 19
Energy Storage Analysis
Nov 20 – Nov 26

14. Deliverables VAWT blueprint Turbine/CVT blueprint
Selected energy storage
Selected fabrication materials
Budget