MC1503, HSb1503 videos on you tube |
Our Design A combination of two windmills, one from paper plates and one from orange card in classic beach windmill design Our Experiment We tried these two connected in series and parallel. We got enough power to run the radio, even with just the small fan blowing! Results Reading 1 Current [ 15] mA Reading 2 Current [ 14.5] mA Average Current = [14.75 ] mA Windspeed at fan = [s ] ms-1 Resistance = [100 ] Ohms Power = I * I * R (remember to convert mA to A) 0.02176 So with a windspeed of [s ] our turbine generates an average current of [14.75 ] mA delivering [21.76 ] mW so in 10 minutes it could generate [21.76 * 600 = 13053 ] mW. If playing music on an iPod classic consumes about 77mW per second, 10 minutes of turbine time (assuming 100% energy transfer efficiency) can power [ 169.5 ] seconds of playback time, enough to listen to about [ 0.9 ] 3 minute songs. Thoughts Want to add in more turbines to make a bigger wind farm. |
Can you design a better windmill?
MC1503, HSb1503
AC1503
AC1503 videos on you tube |
Our Design Paper plate and coctail sticks. Flower shape. Our Experiment Tried it with lots of different speeds, and fans. Results Reading 1 Current [10.5] mA Reading 2 Current [11.3] mA Reading 3 Current [11.7] mA Reading 4 Current [11.9] mA Average Current = [11.35] mA Windspeed at fan = [1.7] ms-1 Resistance = [100] Ohms Power = 0.01288w So with a windspeed of [1.7] our turbine generates an average current of [11.35] mA delivering [12.88]mw so in 10 minutes it could generate [12.88*600] mW. If playing music on an iPod classic consumes about 77mW per second, 10 minutes of turbine time (assuming 100% energy transfer efficiency) can power [100] seconds of playback time, enough to listen to about [0.6] 3 minute songs. Thoughts With more power, you should have less blades and more surface area. With less wind speed you might get more power than otherwise with more blades. |
HS1503
HS1503 videos on you tube |
Our Design 3 green card blades supported by sticks, but not very evenly spaced around the cork Our Experiment Collected some current readings and this one wasn't a great performer, but my second one was. It's the orange one in the wind farm trial. This green one wasn't well balanced. Results Reading 1 Current [ 3.2] mA Reading 2 Current [ 6] mA Reading 3 Current [ 3] mA Reading 4 Current [ 4] mA Average Current = [4.05 ] mA Windspeed at fan = [s ] ms-1 Resistance = [100 ] Ohms Power = I * I * R (remember to convert mA to A) 0.00164 So with a windspeed of [s ] our turbine generates an average current of [4.05 ] mA delivering [1.64 ] mW so in 10 minutes it could generate [1.64 * 600 = 984.2 ] mW. If playing music on an iPod classic consumes about 77mW per second, 10 minutes of turbine time (assuming 100% energy transfer efficiency) can power [ 12.8 ] seconds of playback time, enough to listen to about [ 0.1 ] 3 minute songs. Thoughts this one was too heavy with the card, try with paper next |
kh11010703
kh11010703 videos on you tube |
Our Design s shaped yellow one Our Experiment we tried moving the generator to allow this one to rotate around a vertical (and horizontal) axis but it didn't want to turn Results we sadly didn't get any energy out of this one. Reading 1 Current [ ] mA Reading 2 Current [ ] mA Reading 3 Current [ ] mA Reading 4 Current [ ] mA Average Current = [I ] mA Windspeed at fan = [s ] ms-1 Resistance = [R ] Ohms Power = I * I * R (remember to convert mA to A) So with a windspeed of [s ] our turbine generates an average current of [I ] mA delivering [P ] (convert W to mW) mW per second so in 10 minutes it could generate [P * 600 ] mW. If playing music on an iPod classic consumes about 77mW per second, 10 minutes of turbine time (assuming 100% energy transfer efficiency) can power [ ? ] seconds of playback time, enough to listen to about [ ? ] 3 minute songs. Thoughts REPLACE THIS WITH YOUR THOUGHTS: HOW COULD YOUR WINDMILL BE IMPROVED, HOW COULD THE EXPERIMENT BE IMPROVED, IS 100% EFFICIENCY ENERGY TRANSFER REALISTIC, WHAT WOULD YOU ASK AN EXPERT, HOW CAN TECHNOLOGY SUPPORT SCIENCE TEACHING AND LEARNING, ETC... |
ka11010703
ka11010703 videos on you tube |
Our Design paper plate design Our Experiment This one didn't spin very fast but looked very efficient Results Reading 1 Current [ 7.2] mA Reading 2 Current [ 6.9] mA Reading 3 Current [ 7.3] mA Reading 4 Current [ 7.7] mA Average Current = [ 7.275] mA Windspeed at fan = [s ] ms-1 Resistance = [100 ] Ohms Power = I * I * R (remember to convert mA to A) = 0.00529 So with a windspeed of [s ] our turbine generates an average current of [7.275 ] mA delivering [5.29 ] (convert W to mW) mW per second so in 10 minutes it could generate [5.29 * 600 = 3175] mW. If playing music on an iPod classic consumes about 77mW per second, 10 minutes of turbine time (assuming 100% energy transfer efficiency) can power [ 3175 / 77 = 41.2] seconds of playback time, enough to listen to about [ 0.2 ] 3 minute songs. Thoughts REPLACE THIS WITH YOUR THOUGHTS: HOW COULD YOUR WINDMILL BE IMPROVED, HOW COULD THE EXPERIMENT BE IMPROVED, IS 100% EFFICIENCY ENERGY TRANSFER REALISTIC, WHAT WOULD YOU ASK AN EXPERT, HOW CAN TECHNOLOGY SUPPORT SCIENCE TEACHING AND LEARNING, ETC... |
kh11000703
kh11000703 videos on you tube |
Our Design Green paper beach style windmill Our Experiment The wind did turn it very well initially, but then made it fall apart as the wind was too strong for the design. Results Reading 1 Current [19.2 ] mA Average Current = [19.2 ] mA Windspeed at fan = [5.9 ] ms-1 Resistance = [100 ] Ohms Power = I * I * R (remember to convert mA to A) 0.036864 W So with a windspeed of [5.9 m/sec ] our turbine generates an average current of [19.2 ] mA delivering [ 36.864] (convert W to mW) mW per second so in 10 minutes it could generate [36.864 * 600 = 22118.4 ] mW. If playing music on an iPod classic consumes about 77mW per second, 10 minutes of turbine time (assuming 100% energy transfer efficiency) can power [ 22118.4 / 77 = 287 ] seconds of playback time, enough to listen to about [ 1.6 ] 3 minute songs. Thoughts REPLACE THIS WITH YOUR THOUGHTS: HOW COULD YOUR WINDMILL BE IMPROVED, HOW COULD THE EXPERIMENT BE IMPROVED, IS 100% EFFICIENCY ENERGY TRANSFER REALISTIC, WHAT WOULD YOU ASK AN EXPERT, HOW CAN TECHNOLOGY SUPPORT SCIENCE TEACHING AND LEARNING, ETC... |
ka11000703
ka11000703 videos on you tube |
Our Design First design with 3 red paper blades and sticks Our Experiment REPLACE WITH DESCRIPTION OF YOUR EXPERIMENT Results EDIT WITH YOUR VALUES Reading 1 Current [18.5 ] mA Reading 2 Current [ 19.5] mA Reading 3 Current [ 17.3] mA Reading 4 Current [ 18 ] mA Average Current = [ 18.3] mA Windspeed at fan = [s ] ms-1 Resistance = [100 ] Ohms Power = I * I * R (remember to convert mA to A) = 0.03358 W So with a windspeed of [s ] our turbine generates an average current of [18.3 ] mA delivering [33.5 ] (convert W to mW) mW per second so in 10 minutes it could generate [33.5 * 600 ] 20148.3 mW. If playing music on an iPod classic consumes about 77mW per second, 10 minutes of turbine time (assuming 100% energy transfer efficiency) can power [ 20148.3 / 77 = 261.7] seconds of playback time, enough to listen to about [ 1.5 ] 3 minute songs. Thoughts REPLACE THIS WITH YOUR THOUGHTS: HOW COULD YOUR WINDMILL BE IMPROVED, HOW COULD THE EXPERIMENT BE IMPROVED, IS 100% EFFICIENCY ENERGY TRANSFER REALISTIC, WHAT WOULD YOU ASK AN EXPERT, HOW CAN TECHNOLOGY SUPPORT SCIENCE TEACHING AND LEARNING, ETC... |
MAD16001003
MAD16001003 videos on you tube |
Our Design Madonna design, Made of paper plates, it evolved into a multi-cup design with 4 cups in the end. Our Experiment initial mA readings were 0.37, 0.45, 0.2, 0.4 but later we got the following Results Reading 1 Current [ 5.6] mA Reading 2 Current [ 5.2] mA Reading 3 Current [ 5.8] mA Reading 4 Current [ 5.2] mA Average Current = [ 5.4] mA Windspeed at fan = [ 4.7 ] ms-1 Resistance = [100 ] Ohms Power = I * I * R (remember to convert mA to A) = 0.00291 Watts So with a windspeed of [4.7 ] our turbine generates an average current of [5.4 ] mA delivering [2.91] mW per second so in 10 minutes it could generate [2.91 * 600 ] mW. = 1746 mW If playing music on an iPod classic consumes about 77mW per second, 10 minutes of turbine time (assuming 100% energy transfer efficiency) can power [ 1746/77 = 22.67 ] seconds of playback time, enough to listen to about [ 0.126 ] 3 minute songs. Thoughts Why do wind turbines need to be so big to generate decent amounts of energy? |
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