Yantai wind resources are still abundant throughout China, but specific locations need to be considered. Use an anemometer to measure and see what level of wind turbine the local wind speed is suitable for. When you weigh according to this sutra, do you feel safe or uncomfortable? What is his size? I have a concept in mind. I hope my answer is helpful to the original poster!
There is a reason for this. The old electric fan is made up of three blades.
A few days ago the old electric fan in the house broke down, then I bought a new one. This fan no longer has just three blades like the traditional electric fan, but is made up of many small blades. This design looks much better than a traditional electric fan. At the same time, this also reminds me of another problem, namely the wind turbines used in the productionion of wind energy, without exception, they are composed of three blades. Why is it? You can't create energy from nothing, so wind power doesn't create electricity from nothing, it just converts energy and turns wind energy into electricity. Since it is about energy conversion, it will inevitably involve a problem, namely the conversion efficiency. The wind energy conversion rate is closely related to two factors, one is wind energy and the other is wind speed.
Wind force is equal to wind power multiplied by wind speed.
Now imagine that our wind turbine has many blades that combine to form a closed disk. What about wind energy conversion? Basically zero. Because when the wind turbine becomes a closed disk, the wind force acting on the disk can effectively be maximized, but no wind can pass throughser the disk and can only go around the disk, so the wind speed acting on the disk is zero. Any number multiplied by zero is zero, so even if the wind is very strong and there is no wind speed, there is no way to make the conversion. We see that to convert wind energy into electrical energy, the number of blades must be reduced so that the wind can pass quickly. As the number of blades decreases, the wind speed will gradually increase and the wind force acting on them will gradually decrease. In order to achieve maximum conversion power, a balance point must be found.
Now you might think that since a wind turbine has three blades, it must be because the wind is strongest with three blades, but that's not the case.
Calculations show that the wind energy conversion rate of the four blades is the highest. So why have wind turbiness three blades instead of four? When we encounter a problem, if we cannot find the answer in scientific principles, then the answer must be related to another factor, namely money. The fan is not an electric fan. It must withstand a lot of force and bending moment when working, so the material must be hard. The blades of modern large-scale wind turbines generally use steel pipes or D-shaped steel as longitudinal beams, steel plates as transverse beams, filled with foam inside and covered with skin of fiberglass on the outside.