I would like to know whether vertical axis or horizontal axis wind turbine give more structural load to its tower given all other conditions and specifications are the same (power output, height, wind speed). The size may differ for both as long as the rated power output at a given wind speed is the same.
Dear Eqwan,
It is the horizontal axis one mainly due to the virtual surface facing the air (S= pi*r2). In addition, the two wind concept could not be really compared in terms of loading as for the horizontal axis turbine, there is a nacelle at the top of the turbine, which will increase the loading. This is not the case for a vertical axis turbine.
Regards,
Mohamed
http://mragheb.com/NPRE%20475%20Wind%20Power%20Systems/Vertical%20Axis%20Wind%20Turbines.pdf
http://mnre.gov.in/file-manager/UserFiles/faq_wind.pdf
Given all other parameters being the same, the horizontal axis wind turbines cause less vibrational loads and torque on the tower compared to the vertical axis wind turbines.
I think this is a testimonial that the horizontal axis wind turbines have the largest market share compared to the vertical axis wind turbines.
Hope this helps answer your question.
Professor Yehia Khalil, Yale University, USA
Fellow of the University of Oxford, UK
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