Anisa Larasati, Zainal Arifin, Dominicus Danardono Dwi Prija Tjahjana, Singgih Dwi Prasetyo
The increasing integration of hybrid renewable energy systems, such as photovoltaic-Savonius systems, provides an innovative solution to mitigate climate change by reducing pollutant emissions. This study hypothesizes that a triangular deflector installed between the solar photovoltaic and the Savonius turbine can cool the operating temperature of the solar photovoltaic while enhancing the turbine's power coefficient (Cp). This research investigates the effects of deflector width, angle, and distance with three levels for each variable on turbine performance and PV cooling efficiency. The deflector, made of acrylic glass, has dimensions based on the turbine's diameter and radius. Experiments were conducted indoors using halogen lamps as solar simulators with an intensity of 1000 W/m2, and 3×3 blowers supplied wind at a speed of 4.5 m/s. Using Design of Experiment (DOE) Full Factorial 33 allowed for 27 run experiments to capture all possible interactions between variables, which will then be analyzed using Analysis of Variance (ANOVA) to confirm that deflector width was the most significant factor influencing system performance, followed by angle and distance. Using the optimal configuration (1/1D width, 75° angle, 1.40/1r distance) increased PV efficiency by 6.18% and the turbine power coefficient by 40.37%, supporting further development of sustainable energy technologies. © 2025 The authors. This article is published by IIETA and is licensed under the CC BY 4.0 license (http://creativecommons.org/licenses/by/4.0/).
Department of Mechanical Engineering, Universitas Sebelas Maret, Surakarta, 57126, Indonesia; Power Plant Engineering Technology, Faculty of Vocational Studies, State University of Malang, Malang, 65145, Indonesia
