The three blades of the wind turbine are all identical. Think about it, what shape are the blades wh

Introduction The three blades of the wind turbine are all the same length. Think about it, what shape do the blades have when they are rotated?

The three blades of the wind turbine are all identical. Think about it, what shape are the blades wh

They must be the same length. The three blades are arranged at 120° to each other and rotate in a circle. The reason is very simple. The same length is for balancing. The wind reception area is the same. The force on the hub is naturally balanced. As for why it's round Yes, that's easy to understand, haha, because it rotates! ! !

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

Personally, I think that if the wind turbine blades 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 the direct connecting rod will explode. when the wind is strong. 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.

With the changing times, 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. As a new clean and renewable energy, wind power has received much 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 about the difference between the 3 leaves and the 5 leaves of the wind turbine? wind turbine ?

Wind energy, as a new clean and renewable 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 skyand white clouds, are you also curious to know the difference between the 3 leaves and the 5 leaves of the 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 above figure shows that as the number of blades increases, the wind power utilization coefficient also increases, but in the process from 3 blades to 4 blades to 5 blades , the wind power 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 perspective, the gain exceeds the loss.

So, the less a wind turbine hase blades, 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, an insufficient number of 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 theThe fatigue problem is worse than that of the 3-blade impeller.

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. further increasing the power and speed of electricity production. 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.

  • Popular Focus
  • Where is the cheapest battery wholesale?

    Where is the cheapest battery wholesale in Tangxia, Sanyuanli, Baiyun District? There is an enterprise specializing in the independent production of electric vehicles in Tangxia, Sanyuanli, Baiyun District, Baiyun Sanyuanli Avenue, Baiyun Sanyuanli Street
    08-02
  • Four 3.7V lithium batteries in series and parallel produce 7.4V/4.4A. How to reduce it to 4.8V/4.4A?

    Four 3.7V lithium batteries in series and parallel produce 7.4V/4.4A. I personally think it is impossible to reduce it to 4.8V/4.4A. Because the discharge platform of lithium batteries is generally set
    08-10
  • What are the materials of the negative electrodes of lithium batteries?

    What are the materials of the negative electrodes of lithium batteries? The main commercial applications of lithium batteries include graphite, which is a sheet of copper used to guide current and which does not react. another safe
    08-02
  • The difference between 18500 and 26500 batteries

    What is the difference between 18500 and 26500 batteries? The answer above is 18650. The person asking the question should ask what is the difference between 18505 and 26500 batteries. In the case of Fuant ER1
    08-02
  • What does 3.7V 80mAh written on a lithium battery mean?

    What does 3.7V 80mAh written on a lithium battery mean? 3.7 V, 80 mA = 0.08 A, H means 1 hour, or 3600 seconds. Taken together, it is
    08-02
  • How long does a lithium battery (cell phone battery) last?

    How long does a lithium battery (cell phone battery) last? The lifespan of mobile phone batteries, under normal conditions of use and without serious impact, the lifespan set by the manufacturer must be 5 years.
    08-02
  • Will lithium batteries explode when charging?

    Will lithium batteries explode when charged? Will lithium batteries explode when charged? Lithium battery explosions usually occur during the charging process, because the negative electrode material of lithium batteries is graphite or other carbon materi
    08-02
  • Parameters of lgdas31865 lithium battery

    Parameters of lgdas31865 lithium battery The parameters of lgdas31865 lithium battery are as follows: LGDAS31865 is a model 18650 lithium battery with a capacity of
    08-02
  • What are the main components of lithium battery electrolyte?

    What are the main components of lithium battery electrolyte? The composition of lithium battery electrolyte is shown below. 1. Ethylene carbonate: molecular formula C3H4O3. Colorless transparent liquid (>35℃), room temperature
    08-02
  • Who are the lithium battery manufacturers in Shandong?

    What are the lithium battery manufacturers in Shandong? Shandong Shengyang Power Supply Co., Ltd. and Shandong Weineng Environmental Protection Power Technology Co., Ltd. 1. Shandong Shengyang Power Supply Co., Ltd. is located in Shengyang, Qufu City.
    08-02
  • Types of drone batteries available in 2024

    Part 1. Types of drone batteries available in 2024In 2024, drone batteries have advanced significantly, offering a range of options to cater to various needs in
    07-30
  • How long does it take to charge 26650 battery?

    How long does it take to charge a 26650 battery? The charging time for a 26650 battery is generally between 3 and 6 hours, but the precise time depends on the power of the charger and the capacity of the battery. in general
    08-02
  • For what?Sure, here's an article based on the phrase "For what?

    The simple yet profound question, "For what?" often serves as a gateway to deeper reflections on purpose and intention. It is a query that invites us to delve into the reasons behind actions, decisions, and circumstances that shape our lives and the wor
    08-02
  • Choosing the Right Cart Battery

    This comprehensive guide will walk you through everything you need about cart batteries, from understanding different types to making an informed purchase decision.
    08-02
  • 30mAh~500mAh 3.7 V Li-ion Battery

    Welcome to Ufine's collection of 3.7V lithium-ion batteries ranging from 30mAh to 500mAh. Explore a diverse range of compact and lightweight batteries suitable for various electronic devices,
    08-02
  • Here are 10 essential facts about drone batteries for 2024.

    10 Key Facts About Drone Battery for 2024 In 2024, drone batteries have advanced significantly, offering a range of options to cater to various needs in the consumer, commercial, and industrial sectors. Below are the primary types of drone batteries avai
    08-02
  • Could you please explain the difference among IMR, ICR, INR, and IFR 18650 batteries?

    What is the Difference Between IMR, ICR, INR, and IFR 18650 Battery?In 18650 batteries, discerning the differences among IMR, ICR, INR, and IFR types is fundamental for tailored and efficient battery usage. These distinct
    08-02
  • Safety considerations for cart batteries

    Selecting the ideal cart battery is crucial for ensuring optimal performance and longevity of your electric vehicle or vaping device. This comprehensive guide w
    08-01