The diffusor

Related to the construction in the air and create a wind power station on a device carrier, it is possible to place a diffusor after the wind turbine.

A suitable approch is from Yuji Ohya, he is a professor at the Research Institute for Applied Mechanics at Kyushu University in Japan.

He is an expert of the "wind lens turbine" (WLT) and developed different kinds of WLTs. and calculated it with computational fluid dynamics (CFD) and with real small wind turbines.

The structure is as follows:

This new wind turbine system consists of a diffusor with a brim around the wind turbine.

The factor is around 2-5 times compared with a bare wind turbine, it depends  on the diffuser

shape and length and the brim height.


One advantage is that, the increase of the power is starting from the beginning of the relevant

wind speed for a high-altitude wind power station.

For the smaller version with an increase of 2.5 times, the weight is lower.

All pictures are from the article: Koichi Watanabe and Yuji Ohya "A Simple Theory and Performance Prediction for a Shrouded Wind Turbine

with a Brimmed Diffuser" in Energies 2021,14,3661

This website uses cookies to provide you with the best online experience. By using this website you agree to the use of cookies. More information at www.sanfritsch.com/privacy

×
Share by: