kh11010703

kh11010703 photos on flickr 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 photos on flickr 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 photos on flickr 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 photos on flickr 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...