Performance Investigation of Building Integrated Hybrid Vertical Axis Wind Turbine for Small Scale Power Generation
Abubakar Ibrahim
, Dami Saley Dabai , Mustafa Muhammad Kwaifa , Garba Danjumma Sani
Key words: Wind Energy, Wind Speed, Hybrid VAWT, Integrated, Gabled Roof Shape
Abstract-The combination of the two types of vertical axis wind turbine (Darrieus and Savonius rotors) work more efficiently at low wind speed. The integration of the hybrid VAWT on top of gabled roof shape is considered as part of technology suitable for domestic micro-energy generation. Darrieus and Savonius rotors work efficiently in urban environment at low wind speed. The Darrieus rotor is more efficient but does not self-start easily, while Savonius rotor is self-starting and creates high torque but has low efficiency. Thus, the combination of these rotors as hybrid system would help to improve the overall efficiency of the wind turbines and overcoming their respective demerits. The aim of this research was designed, fabricated and investigated the performance of the hybrid system integrated on building rooftop with gabled roof shape. The first experiment was conducted by testing the performance of hybrid vertical axis wind turbine (VAWT) without the building at an average wind speed of 5.8 m/s, the second experiment was conducted by testing the performance of hybrid VAWT integrated on the building rooftop using the same average wind speed of 5.8 m/s. In each case, the average wind speed, rotational speed, current and voltage were measured and recorded. Using the recorded data, the angular velocity (tip speed ratio (TSR), electrical power, mechanical power, coefficient of power (CP), torque and coefficient of torque (C) were evaluated. The results obtained showed that the maximum power output generated by the bare-hybrid VAWT (without the building) was approximately 1.4 W at an average wind speed of 5.8 m/s and 1.6 m as hub height, this indicated that the bare-hybrid VAWT generated only 14 % of the rated power (10 W) of the generator. However, when the hybrid VAWT was integrated on the prototype building rooftop with gabled roof shape, the maximum power output generated was approximately 2.0 W under the same experimental condition, this indicated that the hybrid VAWT generated 20 % of the rated power (10 W) of the generator. The power optimization of the hybrid VAWT is attributed by the gabled roof shape which accelerated the stream wise velocity more than the turbulence intensity above the roof shape. Similar improvement in performance of hybrid VAWT was observed in rotational speed (RPM), coefficient of power CP), mechanical power (Pm) and coefficient of torque (C), where the hybrid VAWT integrated with gabled roof shape outperformed bare-hybrid VAWT in each case. Therefore, mounting of hybrid VAWT is suitable on building roof shape.
"Performance Investigation of Building Integrated Hybrid Vertical Axis Wind Turbine for Small Scale Power Generation", IJSDR - International Journal of Scientific Development and Research (www.IJSDR.org), ISSN:2455-2631, Vol.7, Issue 11, page no.173 - 186, November-2022, Available :https://ijsdr.org/papers/IJSDR2211029.pdf
Volume 7
Issue 11,
November-2022
Pages : 173 - 186
Paper Reg. ID: IJSDR_202409
Published Paper Id: IJSDR2211029
Downloads: 000347270
Research Area: Science & Technology
Country: kota, Rajasthan, India
ISSN: 2455-2631 | IMPACT FACTOR: 9.15 Calculated By Google Scholar | ESTD YEAR: 2016
An International Scholarly Open Access Journal, Peer-Reviewed, Refereed Journal Impact Factor 9.15 Calculate by Google Scholar and Semantic Scholar | AI-Powered Research Tool, Multidisciplinary, Monthly, Multilanguage Journal Indexing in All Major Database & Metadata, Citation Generator
Publisher: IJSDR(IJ Publication) Janvi Wave
