The impact of a wind concentrator system on the efficiency of roof-mounted wind turbines in rural areas

Authors : Zeynep Aytaç, Halis Deviren

Pages : 1211-1221

Doi:10.28948/ngumuh.1694150

View : 170 | Download : 203

Publication Date : 2025-10-15

Article Type : Research Paper

Abstract :Wind energy is a crucial pathway for sustainable electricity generation. Nevertheless, the performance of small-scale wind turbines-particularly in urban and rural environments- remains constrained by low and highly variable wind speeds. This study presents a novel wind concentrator system specifically developed to improve the performance of roof-mounted wind turbines by optimizing airflow characteristics. The system utilizes concave concentrator blades positioned circumferentially around the rotor to accelerate the incoming airflow and generate a controlled vortex, thereby increasing the wind velocity incident on the turbine. Experimental and theoretical analyses indicate that the concentrator increases the turbine rotational speed by approximately 39%, thereby enabling the turbine to operate at lower wind speeds that would otherwise result in stalling. Power coefficient measurements indicate an increase from 0.15 without the concentrator to 0.20 with the concentrator, representing approximately a one-third enhancement in power output at a wind speed of 9.5 m/s. Moreover, the concentrator facilitates comparable energy capture using only one-sixth of the rotor area required by a conventional wind turbine. These findings underscore the potential of the system to enhance the feasibility of small-scale wind energy, especially for decentralized and off-grid applications, thereby contributing to the development of distributed renewable energy solutions.
Keywords : rüzgar enerjisi, rüzgar türbini verimliliği, rüzgar yoğunlaştırıcı sistemi, girdap dinamiği, rüzgar enerjisi dönüşüm sistemleri (WECS)

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