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Zhuji Electric Technology Co., Ltd.
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Home > news > Development trend and application of vertical axis wind turbine
Development trend and application of vertical axis wind turbine
Edit:Zhuji Electric Technology Co., Ltd.   PublicDate:2019-01-26

The power of the generator is the product of torque and rotational speed, because of the structural factors of the horizontal axis fan, it is decided that the wind energy utilization rate of the horizontal shaft fan will not be too high.

In addition to the horizontal shaft fan, there is also a rotating shaft perpendicular to the ground fan, referred to as the vertical shaft fan. The application of vertical axial fans can be traced back to thousands of of years ago, and people use vertical axial fans for water extraction. However, the study of power generation using vertical axis did not begin until after the 1920s, because of the backwardness of research tools and methods, the results led to the conclusion that the wind energy utilization rate of vertical axial fan was not as good as that of horizontal shaft fan, but the manufacturing process and cost were lower than that of horizontal shaft fan.

With the rapid development of computer technology, Computational fluid mechanics (Computational Fluid Dynamics, or CFD) has developed rapidly, from the initial small disturbance speed potential equation to the Euler equation and the more complex N-S equation, especially after the 21st century , It can simulate the flow of complex shape airflow under dynamic, which provides a basis for the research of vertical axial fan. The traditional horizontal axis wind turbine blades are limited by the special non-equal-section structure of their blades, which can not be designed and calculated by CFD method at present, but only by a lot of experience.

For H-type vertical axial wind turbine blades, because it is a isometric structure, it can be designed by CFD method, the calculation accuracy is higher than the lutein theory method, therefore, the current research of vertical axial fan in the world is also more and more.

The existing medium and small H-type vertical shaft fan not only achieves the level of small and medium-sized horizontal shaft fan in the system efficiency, but also solves the problem of low wind speed start and automatic speed limit under high wind speed, which makes the medium and small vertical axial fan have commercial application value for the first time in the world, and because of H-type wind

The noise-free features of the machine have a wider range of applications than medium and small horizontal axial fans, laying the foundation for large-scale commercial development of medium and small vertical axial fans.

Because of the characteristics of H-type vertical axial fan, the application mode and application field of wind turbine have changed. Horizontal axis fan Because of noise, wind direction and other problems, fans are either used in wind farms, or used in remote areas to solve the problem of no electricity, these applications are far away from the urban center area, but H-type fan will expand new application areas. For example, in addition to wind farm applications, it is possible to take full advantage of the wind-collecting effects of large buildings and the space and height of the top floors of large buildings, building wind power buildings and 0 energy-saving buildings. In this regard, Shanghai due to the unique advantages of H-type vertical shaft fan technology, should have the conditions and ability to be at the forefront, and secondly, urban public lighting and highways can also be a large number of wind/light complementary way to the use of wind turbines.

Because of the H-typeVertical Axis Wind Turbine, So the application and application areas of wind turbines have changed. Horizontal axis fan Because of noise, wind direction and other problems, fans are either used in wind farms, or used in remote areas to solve the problem of no electricity, these applications are far away from the urban center area, but H-type fan will expand new application areas.