Miniature Windmill Gold Team- Cristhian Moreno, Eric Yang, Dillon Stanhope and Taylor Urbancic
Intro: Burkina Faso ● Northwestern Africa ● Little access to electricity ● Dry, flat land ● Moderate wind speeds ● Need access to inexpensive, sustainable energy
Case Study Family consisting of a father, mother and four children Small plot of farming land next to Black Volta River Two hours from capital- Ouagadougou Must travel to capital to charge cell phone
Mission Statement Our mission statement is to create a safe and durable device that can charge a family’s phone for under ten dollars and requires minimal labor from the family.
Design Process 1. Problem- Charge a phone in Burkina Faso 2. Redefine - Create electricity to charge a phone with $10 limitation per family 3. Develop - Create a windmill/watermill/windmill hat 4. Best Solution - Miniature windmill on family’s roof 5. Model - Build a windmill to capture rotational energy and make electricity 6. Test - Run tests to see how we can improve on the model 7. Evaluate Results - Changes to our Prototype 2
Judging Criteria Judging Criteria Weight Waterwheel Propeller Hat Mini Wind Turbine < $10 per Family 6 points 1 (6) 2 (12) 2 (12) Minimal Physical 5 points 2 (10) 1 (5) 2 (10) Labor Ease of 3 points 1 (3) 0 (0) 2 (6) Maintenance Time to Build 4 points 0 (0) 1 (4) 2 (8) (3hr Max) Actual Electrical 7 points 2 (14) 1 (7) 1 (7) Output Multi-Functional 2 points 2 (4) 1 (2) 0 (0) Ecofriendly 1 point 2 (2) 2 (2) 2 (2) Total Points - 39 32 45
Tests for Prototypes 1 and 2 Order Test Requirements for passing Fan Test The windmill spins at a 1 (Does it Work) minimum of one revolution per two seconds There are no jagged edges 2 Safety Test on the prototype and the propeller does not fall off easily. Each part must be able to 3 Ease of Maintenance Test be put back onto the prototype in under ten minutes. Sturdiness Test The windmill still spun at a 4 (Outdoor Test) rate of at least two revolutions per second. It can produce energy from 5 Ability to Produce Energy. rotational motion. (For Prototype 2 Only)
Prototype 1 Made from wood, cardboard, a PVC pipe, and duct tape Passed the Ease of maintenance test and Fan test Failed the Safety and Outdoor test
Prototype 2 Made from wood, sheet metal, hot glue, a PVC pipe and a motor and gears Passed all tests
Testing Results Battery Capacity - 770 mAh 0.057 A produced 0.770 Ah / 0.057 A = 13.5 h
Design Appropriateness ● Design cost - $14.02 ● No physical work done by family ● Limited maintenance needed ● Power produced at .057 Amps per hour ● ~13.5 hours to fully charge phone
Suggestions for Prototype 3 ● Create a bigger gear ratio to increase electricity output ● Create a situation with less friction to maximize captured energy ● Bigger Motor ● Bigger Fins
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