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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. |
MC1503, HSb1503
AC1503
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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
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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 |
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