DESIGN AND NUMERICAL SIMULATION OF HORIZONTAL AXIS HYDROKINETIC TURBINE AT FLOW SPEED 2.5 M/S
The level of electricity consumption per capita in Indonesia has increased by around 6 % from year 2013 to 2018. Currently, most types of energy used for electricity needs in Indonesia comes from fossil fuel. In mean time Indonesia has renewable energy potential of 443,208 MW with the use of water e...
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| Format: | Final Project |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/50326 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | The level of electricity consumption per capita in Indonesia has increased by around 6 % from year 2013 to 2018. Currently, most types of energy used for electricity needs in Indonesia comes from fossil fuel. In mean time Indonesia has renewable energy potential of 443,208 MW with the use of water energy only 7.4 %.
This study is aimed to design an optimal horizontal axis hydrokinetic turbine according to operating condition with water flow velocity of 2.5 m/s. Numerical simulation for turbine design is done by varying several parameters namely solidity of turbine, addition of pitch angle to turbine blade, and addition of winglet at the tip of blade to determine turbine model performance. The design turbine model is simulated with CFD software to determine performance of turbine.
Simulation result show that high solidity turbine (solidity 5 %) has optimal performance at low TSR while the low solidity (solidity 3 %) has optimal performance at high TSR. The simulation result of turbine model by varying pitch angle will reduce the turbine performance at each TSR due to separation of fluid flow and small pressure difference between top and bottom surface of blade. The simulation result of turbine model with use winglet at the tip of blade will increase the turbine performance at each TSR where turbine M with unidirectional winglet can increase power coefficient of 8.350 % and turbine L with winglet against the flow can increase power coefficient of 7.501 % from turbine without use of winglet. The turbine model that has optimal performance at each TSR is turbine model M which have winglet with same direction as flow direction that produces maximum power coefficient of 0.528 and power of 6,338 W at TSR 7.
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