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Nature offers us a lot of easily accessible energy sources: wind, sun, water. We use only a small part of what nature gives us. If, for example, we turn wind energy into electricity, then we will be able to use electricity for free and save for the payment of communal services. And it's pretty simple to build a wind generator ...
Installing a wind turbine for your home can cost a serious amount if we are talking about buying a finished product. But if you have the time and desire to work in the garage and some technical skills, you can try to make a windmill with your own hands. Some models are fairly easy to make and will cost you about $ 30.
Inventor Daniel O'Connell, who developed an affordable home solar collector model, unveiled another project of his own - a wind turbine with a vertical rotor based on the Lenz2 design. This model uses aluminum lithographic sheets for offset printing to make propellers. Such plates can be obtained cheaply (or even free of charge) from printing companies, a certain amount of "iron" available and a bicycle wheel.
"The turbine uses the Lenz2 design, which has a mechanical efficiency of about 40%. Such a windmill can be made entirely of recycled materials and waste, except for screws and clamps. It should cost about $ 30 for a model with three blades, which a person can make in about 6 hours without too much effort "- SolarFlower
According to O'Connell, the wind turbine in the three-blade or six-blade version successfully passed the tests with a continuous wind speed of 80 km / h (three blades) and 105 km / h (six blades).
To receive electricity from the turbine, it is necessary to install an alternating current generator on the rotor, as well as an energy storage device. Although it can also be used for mechanical work, for example, pumping water or turning a flywheel for various needs.
There are many variables that can affect the performance indicators of such a wind turbine. These include the efficiency of the AC generator and, of course, the wind speed at the place of use. According to the author, using a generator with an efficiency of 50% (the simplest and cheapest option), you can get 158 watts of electricity at a wind speed of 50 km / h (13.8 m / s) and approx. 650 watts at 80 km / h (22.2 m / s).
Such a home model of wind turbines will most likely not be able to provide power for your entire home, although potentially more such turbines can generate enough energy to charge the batteries to ensure the operation of appliances in an average household. But it can become an excellent practical project for pupils and students or for those who are simply wind energy is of interest.
https://youtu.be/eDdL27bP8wQ
