Before testing anything else, ask yourself if you used the parts in the parts list.
They give seminars to teachers around the country, and their webite is highly recommended! This update was originally printed in the November issue of the Energy Self Sufficiency Newsletter. We have all semester to build and test a project that saves energy or makes energy, and we have to document our results.
Where do I start?
Wind power is fun to experiment with, and not that difficult or expensive. Another important aspect of science projects and required at science fairs is demonstrating your use and understanding of the Scientific Method of observation, hypothesis, predictions, testing, and conclusion.
First, it would be an excellent idea to familiarize yourself with how wind turbines extract energy from the wind, and their basic components and how they work together. There are also excellent introductions to wind power and wind turbine components at Windpower.
Can your wind turbine fly outside in real wind to test your design and gather data, or does it have to fly inside using wind from an electric fan, such as at a science fair inside a gymnasium? Do you only need to show and measure power output on a meter, or does your wind turbine have to do something physical like power a small light bulb or LED, or make a small pump turn?
But for younger students, fan power is the best way to go — a very safe, fast and easy way to demonstrate wind power. The safety precautions needed are minimal. Fan power may frequently be the only option if the turbine must be demonstrated indoors. Powering light bulbs and LEDs with fan power takes lots of extra complexity and expense — but it can be done.
If real wind can be used for power, more options for experiments are available, but everything must be built better and sturdier.
However, the results are usually disappointing as far as what loads you can run. Connect the multimeter to the 2 leads and set it for DC volts in the volt range. Spin the motor by hand and record the reading, then try spinning it with a cordless drill set at low speed and record the reading.
The voltage you get using the cordless drill at low speed is probably the most you can ever expect from your project. The hand-spun voltage will be more typical.
Voltage of battery, plus at least 1 volt, then another 1 volt for the diode. Analog meters the kind with the moving needle are much more dramatic to watch than digital!
But the typical loads listed above are very low power, and most hobby motors should have no problem running them. Another option is to gear up the the hobby motor to make it spin faster. Michael Arquin of KidWind. You can order his kit from the KidWind Store.
The gearing makes it harder to get the blades spinning but, once they are moving, the power output is excellent. There are plenty of sources for hobby motors in addition to KidWind. If you have the time to spend, or are a more advanced student studying electrical theory, a homemade alternator can be an excellent choice.
The unit can be designed from the start to generate usable voltage at low RPM! The price is reasonable, and during my tests the performance was good enough to light LEDs under table-fan power. The unit is designed with a simple, easy to build vertical axis blade design, and it can be converted to horizontal axis.Tips to save money and energy in the laundry room and reduce the wear and tear on your clothes.
As the wind passes the turbines it moves the blades, which spins the shaft. There are currently two different kinds of wind turbines in use, the Horizontal Axis Wind Turbines (HAWT) or the Vertical Axis Wind Turbines (VAWT). In a typical wind regime of 5m/s, a 1kW wind system would produce a quarter of the daily energy needs of this household electricity use.
However, turbine and battery sizing is complex for off-grid wind systems, especially for off-grid hybrid wind and solar systems. With smaller wind turbines, most farm operations can use all of the power.
But the cost per unit of electricity generated from smaller turbines is higher than that from larger turbines, so the payback period is longer. Q uestion: What does a windmill standing on a sandcastle have in common with a massive ocean liner, a hydroelectric dam, or a transatlantic jet?
Answer: They all use turbines —machines that capture energy from a moving liquid or gas. In a sandcastle windmill, the curved blades are designed to catch the wind's energy so they flutter . Sep 22, · I started by Googling for information on home-built wind turbines.
There are a lot of them out there in an amazing variety of designs and complexities.