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首页> 外文期刊>Applied Energy >Influence of the vertical wind and wind direction on the power output of a small vertical-axis wind turbine installed on the rooftop of a building
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Influence of the vertical wind and wind direction on the power output of a small vertical-axis wind turbine installed on the rooftop of a building

机译：垂直风向和风向对安装在建筑物屋顶上的小型垂直轴风力发电机的功率输出的影响

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摘要

The goal of this study is to investigate the performance of a small vertical-axis wind turbine at an environment with the turbulence intensity more than 30%, particularly on the influence of the vertical wind, the vertical angle, the wind with the unknown direction, the horizontal wind speed, and the turbulence intensity on the power output, which are seldom reported before. The results show that more than 90% of the power is generated when the vertical angle is less than or equal to 45 degrees. The vertical wind speed has the obvious influence on the power when the horizontal wind speed is between 5 m/s and 8 m/s. The percentage of the power generated by the wind with the unknown direction decreases from 31.1% to 8.4% as the horizontal wind speed increases from 4 m/s to 9 m/s. The efficiency is over 40% only when the horizontal wind speed is over 8 m/s. The higher turbulence intensity increases the power at the lower wind speed, but decreases the power at the higher wind speed. Furthermore, the results can be used as a reference for the improvement of aerodynamic characteristics, efficiency, CFD simulation and the location selection of a vertical-axis wind turbine.
机译：这项研究的目的是研究湍流强度大于30％的环境中小型垂直轴风力发电机的性能，特别是对垂直风，垂直角，方向未知的风的影响，以前很少报道水平风速和功率输出上的湍流强度。结果表明，当垂直角小于或等于45度时，将产生超过90％的功率。当水平风速在5 m / s至8 m / s之间时，垂直风速对功率有明显影响。随着水平风速从4 m / s增加到9 m / s，未知方向的风所产生的功率百分比从31.1％降低到8.4％。仅当水平风速超过8 m / s时，效率才超过40％。较高的湍流强度在较低风速下会增加功率，但在较高风速下会降低功率。此外，该结果可作为改进空气动力特性，效率，CFD模拟和垂直轴风力涡轮机位置选择的参考。

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