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  1. Greetings Dr. Yuji Ohya,
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  5. I have seen some reports on your development of a "wind lens" to increase the power generation of wind turbines. Fascinating work! In your paper, I noticed that you listed on only one negative aspect of the development:[1]
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  7. (5) As for demerits, wind load to a wind turbine and structural weight are increased.
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  10. I wanted to inquire as to whether you foresee any additional difficulties with respect to scaling this device. For instance:
  11. - Does your system require particularly high rpms, and if so, might these be difficult to attain with a device larger than your lab-scale device?
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  13. - Have any simulations or experiments been conducted to predict the energy gains at an industrial sized wind turbine size? In other words, if you are achieving an X% increase over bare wind turbines for your 1m size, what power gains would be predicted for the final size? (Or should these gains remain fairly constant?)
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  15. Many thanks for any response you can provide.
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  18. Best regards,
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  21. [1] Ohya Y., Karasudani T. A Shrouded Wind Turbine Generating High Output Power with Wind-lens Technology. Energies. 2010; 3(4):634-649.
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