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American scientists have designed a new wind power plant model that mimics fish swimming and can use air flow more effectively to significantly increase power generation output.
The study is based on the study of fluid dynamics based on fish swimming in the desert region of California, USA, using a vertical axis fan similar to egg scrambler, which improves the overall transmission efficiency.
The conventional propeller-type wind turbines' power generation efficiency has reached the limit. In current wind farms, turbines are separated by a certain distance to prevent air flow disturbances, but this leads to the limitation of wind power output. In a suitable area, the wind farm's electricity output per square meter is about 2 watts. The electric field using the simulated fish school design can increase power output ten times in the same area.
Robert Whittlesey, an aeronautical engineer at Caltech, said: “The arrangement of wind turbines based on fish swimming design is a whole new idea. The arrangement of fish in swimming is based on the principle of least resistance.†He pointed out The new wind farm can learn from this principle and adopt closely spaced counter-rotating turbines. This design can transmit air flow to the fans of the partition wall and improve the efficiency of wind energy use. At the same time, the funnel effect generated between the turbines can also improve the turbine's power generation efficiency. According to the design, a closely-arranged wind farm can produce 20-30 watts per square meter, which is ten times that of an ordinary wind farm.
Another California Institute of Technology scientist, John Dabiri, who participated in the study, said: "There seems to be no connection between fish and wind power plants at first glance. In fact, it is logical to use fluid physics inferences in wind power plants for fish schools. of."
In addition, the newly designed wind power plant has other advantages. The vertical axis blower has little effect on the ground surface, has little harm to birds and bats, and the turbine has higher strength and lower price.
Johns Hopkins University professor Charles Meneveau, who is involved in the study, said that although there are still some problems with the new wind turbine generator, the design is definitely worth considering.
At present, the new generator is still in a large-scale test operation. Whether it can be used in a real wind power plant will continue to be tested. Leverhead, a professor at the British Energy Research Center, said: “This is an interesting idea, but vertical axis fans have limitations. It's not so easy to make a fan that is tall and light and meets the power generation requirements.†And Dabili believes further The experiment is very promising.
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