Energy saving activities in junior high schools Wind power generation model

Introduction Energy saving activity for middle school wind power generation model uses a child's toy motor with a small fan blade, a small bracket to support the toy motor, and two wires to connect the two toy motor electrodes with 1.5

Energy saving activities in junior high schools Wind power generation model

Use a child's toy motor with a small fan blade, use a small bracket to support the toy motor, use two wires to connect the two electrodes of the toy motor to a 1.5 volt bead or a multimeter, then face it when the electric fan is started (use strong wind speed), the rotation of the toy motor blades can be observed on a multimeter or a 1.5 volt electric bead (which should rotate quickly). If you have any questions, don't hesitate to leave a message on my space.

I feel like I've said it all, but I can't seem to get the point. Is the so-called size comparable to the electric fan? There are two types of fan leaves. I forgot the specific theory, but the purpose of the fan is to generate more wind, and the purpose of wind power generation is to use more wind energy and generate aThe force that makes it rotate. , which is the direction generated by the curvature of the fan leaves. But there is a problem with wind power: the area it blows is very large. If the fan area is too large, firstly, the thrust force is too large and the wind turbine will fall. is too weak (fan surface area is too large). Most wind energy cannot be converted into lateral thrust). How to calculate it specifically can be read in a document. Last year I built a small wind turbine. This part is part of the theory, but I really don't remember it clearly. The fan blades used are only 12% efficient. Is it very big? Its lateral pressure is too low compared to the vertical pressure. Additionally, the purpose of the fan is to generate wind over a larger area. As the surface area is not enough, the head swing function isadded, I put this thing on the wind turbine without discussing whether it can be erected (it is possible). this can be done by digging a deeper foundation and changing the support material, reduce the fan area - the whole science is about sacrificing some part of performance in exchange for the most desired results), but efficiency is really too much. weak. As I said before, the little wind power I produced. The generator efficiency is only about 12%, which is far from the highest level of 50+! !

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