Abstract
Decreasing fossil energy sources encourages people to switch from fossil energy to renewable energy because of energy as an essential aspect of life. One of the current efforts to utilize water resources as renewable energy is the Savonius water turbine development. Conventional Savonius water turbine has a simple construction and application. However, the turbine produces relatively small power that requires further assessment to improve its performance. The purpose of this simulation study is to determine the effect of the placement angle of straight blade on the performance of Savonius water turbines on the horizontal axis. Four placement angles of the straight blade at two variations of the number of blades were investigated. This research was conducted by designing a simulation model using software ANSYS 15 with CFX Solver. The water velocity of 1.5 m/s was applied to the turbine with a diameter of 164 mm and a height of 82 mm. The results present torque distribution, flow velocity, and power coefficient (Cp). Based on research, Savonius turbines with placement angle of 85° has the best power coefficient with a Cp value of 0.086 on the Tip Speed Ratio of 0.7. This study was able to increase the power coefficient by 26% with the addition of a straight blade.
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Rahimi, A.I., Anindito, D.C., Danardono, D., Hadi, S. (2020). The Straight Blade Application to Increasing the Performance of the Savonius Water Turbine (Simulation Study). In: Sabino, U., Imaduddin, F., Prabowo, A. (eds) Proceedings of the 6th International Conference and Exhibition on Sustainable Energy and Advanced Materials. Lecture Notes in Mechanical Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-15-4481-1_24
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DOI: https://doi.org/10.1007/978-981-15-4481-1_24
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