Can the shape of a wind turbine blade be transformed into an electric fan?

Introduction Can the shape of wind turbine blades be transformed into an electric fan? I personally think that if the blades of the wind turbine are made like the blades of an electric fan, the first problem is that the weight is too large, and the second problem is t

Can the shape of a wind turbine blade be transformed into an electric fan?

Personally, I think that if the blades of the wind turbine are made like the blades of an electric fan, the first reason is that the weight is too high, and the second reason is that when the wind is strong, the direct connecting rod will calm down. Fan blades are made like wind turbines, which must spin at high speeds to be efficient. This will inevitably consume energy and require higher structural strength of the blades.

Why do wind turbines only have three blades? Isn’t it better to have more?

First, you need a generator motor. If you are making a miniature wind turbine, the engine from a four-wheel drive vehicle can be used instead. Then you place the rotor head on the front. of the motor. The blades are used to cause wind. When the wind turns the rotor of the motor, the two ends of the wire at the rear end of the motor can produceire of electricity. This is the principle of energy production of the wind turbine, but this. can only produce electricity.

Secondly, if you need a really practical micro wind turbine, you need to do the following steps and prepare some materials, such as diode and voltage regulator (voltage stabilizing circuit board) , a battery. , etc.

When preparing these materials, you can first connect one end of the generator motor wire to a diode to prevent the generated power from flowing back to the motor, then connect it to the voltage regulator (a reminder here) The voltage stabilizing power of the voltage stabilizer should be determined in advance, and it must meet the parameter requirements of the voltage generated by the motor to prevent the voltage stabilizing circuit board from burning) before connecting the battery to the voltage stabilizer (the voltage of the batterytterie must also be stable. (in the nominal settings of the voltage regulator) and you are done. When the wind turns your engine, the electricity generated will be processed by the voltage stabilization circuit and stored in the battery~

As the times change, the Functions of these machines and equipment have been continuously improved, such as grain grinding, water transportation, power generation, etc. Traditional wind turbines come in various shapes and designs, but they are all currently being replaced by the same design. Wind power, as a new clean and renewable energy source, has become a popular energy source in recent years. When you walk near the wind turbine and admire the view of the wind leaves spinning quietly under the blue sky and white clouds, are you also curious about the difference between the 3leaves and the 5 leaves of the wind turbine?

As a new clean and renewable energy, wind energy has received great attention in recent years. When you walk near the wind turbine and admire the view of the wind leaves spinning quietly under the blue sky and white clouds, are you also curious to know the difference between the 3 leaves and the 5 leaves of the wind turbine? wind turbine ?

To put it simply, three sheets are easy to balance, but if there are too many sheets, it will be difficult to balance and the cost will be high.

At the rated wind speed, the power generated is proportional to the swept area of ​​the wind rotor, i.e. a wind rotor with 200 blades and a wind rotor with 1 blade can produce the same power.

The figure above shows that as the number of blades increases, the wind energy utilization coefficient also increases, but in the process of 3 bladeses to 4 blades to 5 blades, the wind energy utilization coefficient increases significantly, compared with the increase from 1 leaf to 2 leaves to 3 leaves, the increase is much smaller from the cost point of view , the gain exceeds the loss.

So, wind powerThe fewer blades a generator has, the better?

First of all, the advantage of multi-blade fans is the higher torque conversion rate, but in terms of energy conversion rate, the efficiency of 4-blade and 5-blade fans is lower than that of 3-blade fans. blade fans.

The main reason is that the high resistance of multi-blade fans causes a considerable amount of turbulence which interferes with the rotation of the blades, thereby reducing the energy conversion rate.

It is therefore much better to choose 3 sheets than 4 or 5 sheets. (Well, the same goes for electric fans); Second, a numberInsufficient blades will affect the efficiency of power generation.

In fact, there is currently a patent in Europe that has two leaves, placed vertically, which can double the effectiveness! However, the 2-blade wheel hub has a special structure with a rocker structure, and the fatigue problem is worse than that of the 3-blade wheel.

In addition, the fewer blades, the higher the rated speed. When the speed is high to a certain extent, the circumferential linear speed of the blade tip is very large, causing large wind resistance. a further increase in energy production and speed. Therefore, it is not good to have too few blades. Three blades are mainly for good balance and low cost. After a long period of verification, they have become a common form of fan today.

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