|Description of the design task||Design process – design matrix||Prototype/Model||Engineering Analysis||Summary and Conclusions||References|
Design Process – Design Matrix
With the criteria we put in place, we made several key choices on the final design we desired. We included the Horizontal axis wind turbine (HAWT) for educational use and power generation. This is the traditional type of windmill and we wanted to include in the design so it could be compared to the vertical axis wind turbine (VAWT). The VAWT is a newer type of wind mill whose use is starting to expand so we will incorporate in our center. Having the windmills will allow us to educate the visitors on the difference between the two types. We are also including a Micro Hydro system. Unfortunately there is not a steady moving body of water near the site, so the system will be for educational purposes only. The system will be placed inside of the center, where visitors could see how the system works. Finally there will be a battery bank included in our design. The bank will consist of a three deep cycle battery system. All the power generated will be collected in the bank and stored for later use. This creates a closed system so the devices in the house are not drawing power directly from the power generating devices. The mechanisms we have in place are not always reliable, so the battery bank will resolve this issue. Our final design includes the VAWT, HAWT, Micro Hydro System, and the Battery bank.
Time Line and Gantt Chart
|Water Tower||Playground||Traditional||Geothermal||Water Tower||Control||Helix|
|Helix Wind Mil||Windmill||Micro Hydro Electric||System||Wind Mill|
|Ease Of Use||+||+||+||-||-||+||+|
Calculation of Weights
|Ease||Power Consumption||Power provided||Manufacturing Ease||Maintain||Space Consuption||Durability||Cost||Reliability||Materials Needed||Construction Time||Row Totals||Final Weight|
|Weights||Traditional||Water Tower||Playground||HAWT||Geothermal||Water Tower||Control||VAWT|
|Helix Wind Mill||Windmill||Micro Hydro Electric||System||Wind Mill|
These are just sketches of some basic ideas that we had:
From our weighted Matrix we chose a few designs that will best fit our needs.
Control system - This will control all of the energy that is created and store it for later use (see engineering analysis for more information)
VAWT - Vertical axis wind turbine. This will be made from recycled materials or bought. It is essentially a split open 55 gallon drum that catches wind.
The VAWT design we went with was the Silent Wind Barrel 250W DC barrel wind turbine. It is a low cost design which is made out of a recycled water drum primarily for developing countries. Most of the electronic parts are removed from the design which makes the design very cost effect.
HAWT - Horizontal axis wind turbine. This is already bought and will catch wind just like a traditional wind turbine.
Micro Hydro Electric - This is only an educational venture inside the educational center. We will have two 55 gallon drums one elevated the other at the bottom of the room. When a valve is released the potential energy from the water is released and the water falls through a purchased generator and produces power to light a bulb. People will be able to see that energy was released because the light bulb will turn on as water falls.
--The basics of every system that we looked at.