The Optimal Pitch Distance for Maximizing the Power Ratio for Savonius Turbine on Inline Configuration

Ismail Ismail, Reza Abdu Rahman, Gunady Haryanto, Erlanda Augupta Pane

Abstract


Wind turbine array is an important factor to increase the feasibility of a wind turbine generation, especially for areas with low wind potential. Areas with low wind potential can use the VAWT model for harvesting the wind energy. VAWT array received less attention from researchers due to the low efficiency of the VAWT and also the difficulty in obtaining the optimal configuration of the turbine array. For smart grid system or urban application applications, VAWT still has a great opportunity to be used so that research on VAWT array needs to be studied. The in-line array of the wind turbine is less desirable due to the low power ratio of the wind turbin array, however the in-line array uses a smaller area so that it can be maximized on limited land. This study focuses on the in-line array of the Savonius turbine with four variations based on the pitch distance which refers to the turbine diameter (D). The variation in the distance between the first and second row turbines, 1D – 4D, shows a significant change in relation to the turbulence intensity in the middle area. Turbulence changes also affect the power ratio of the turbine array. The best average power ratio value obtained through mathematical modeling and experiment is obtained at a value of 34% with a average turbulence intensity at a value of 14% for 3D distance. This important finding can be used as a special reference for determining the distance between Savonius turbines in in-line arrays.

 

https://dorl.net/dor/20.1001.1.13090127.2021.11.2.10.9


Keywords


Array power coefficient; Micro windfarm; Savonius rotor; VAWT array.

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DOI (PDF): https://doi.org/10.20508/ijrer.v11i2.11862.g8181

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