2527 Performance Analysis of a Vertical-Axis Cross Flow Wind Turbine

2006 ◽  
Vol 2006.2 (0) ◽  
pp. 261-262
Author(s):  
Satoshi HASE ◽  
Eiji EJIRI ◽  
Shoji YABE
Author(s):  
Sandeep S. Wangikar ◽  
Sharad U. Jagtap ◽  
Abhijeet B. Tarmude ◽  
Abhishek S. Pore ◽  
Sushil P. Shinde

Increasing worldwide demand for electricity requires the need for harnessing different kinds of renewable energies like wind energy. An increase in prevalence of vertical axis wind turbine (VAWT) has renewed interest in developing the new configurations of vertical axis wind turbines for better performance. This paper describes the performance analysis of a casement type vertical axis wind turbine (CTVAWT). The model of CTVAWT has been manufactured and tested to predict the performance. The performance analysis of CTVAWT was carried out by varying the control parameters such as wind speed and casement angle. The effect of each control parameter on the response parameters i.e. torque and power have been analyzed (by conducting various experiments of CTVAWT).The torque and power increases with increase in casement angle up to 40 degrees further decrease with increase in casement angle. From this analysis the newly developed CTVAWT is working efficiently at 40 degrees.


2018 ◽  
Vol 33 (1) ◽  
pp. 49-73
Author(s):  
Yang Cao ◽  
Jinyi Li ◽  
Guoqing Wu ◽  
Qiaomei Li ◽  
Yujuan Shi ◽  
...  

Author(s):  
E. Ejiri ◽  
S. Yabe ◽  
S. Hase ◽  
M. Ogiwara

Flow through the vertical axis cross-flow wind turbine was analyzed using computational fluid dynamics (CFD) to clarify current aerodynamic issues and to propose an improved design configuration for achieving better performance. The computed torque coefficients and power coefficients of a reference cross-flow wind turbine runner were compared with the experimental results. Flow around each blade of the turbine runner was then investigated based on the computed flow results. As a countermeasure to the issues found, a new wind turbine design was devised which has two guide vanes point-symmetrically arranged outside the turbine runner. It was experimentally shown that this improved design with the guide vanes increased turbine efficiency. However, performance predictions by CFD lack sufficient accuracy in the case of the turbine runner with the guide vanes, where complexity and unsteadiness prevail over the entire flow fields.


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