Analysing Hydraulic Efficiency of Water Vortex Pico-Hydro Turbine using Numerical Method
Keywords:CFD, Pico-Hydro, Vortex Blades, Vortex Turbines
To overcome the lack of rural electricity in Indonesia vortex pico-hydro turbines are used as an option solution. This is due to the ability of the vortex turbine to work in low head conditions effectively. This study is conducted with comparison of curved and straight blade to obtain a more optimum turbine performance. Two methods are carried out in this study, analytical and computational method. Analytical methods are used to determine blade geometry and its performance while computational methods are used to analyse internal flow of turbine. As a result, the study concludes that hydraulic efficiency of vortex turbine in this study doesn’t affect much between straight and curved blades. The hydraulic efficiency for those blades is around 0.63. In addition, the study continued by analysing the optimum location of the blade in the basin. The results of the study show that the optimum ratio of depth and diameter of the blade is 0.33 with turbine efficiency is 0.84. Thus, the location of the blades is more important than the type of blades.
Kueh, T. C., S. L. Beh, Y. S. Ooi, and D. G. Rilling. "Experimental study to the influences of rotational speed and blade shape on water vortex turbine performance." In Fifteenth Asian congress of fluid mechanics (15ACFM), Sarawak, Malaysia, pp. 21-24. 2017. https://doi.org/10.1088/1742-6596/822/1/012066
Christopher, C. R., and D. Adanta. "The effect of basin geometry on gravitational vortex hydropower." In IOP Conference Series: Materials Science and Engineering, vol. 788, no. 1, p. 012081. IOP Publishing, 2020. https://doi.org/10.1088/1757-899X/788/1/012081
Dhakal, Subash, Susan Nakarmi, Pikam Pun, Arun Bikram Thapa, and Tri Ratna Bajracharya. "Development and testing of runner and conical basin for gravitational water vortex power plant." Journal of the Institute of Engineering 10, no. 1 (2014): 140-148. https://doi.org/10.3126/jie.v10i1.10895
Dhakal, Sagar, Ashesh Babu Timilsina, Rabin Dhakal, Dinesh Fuyal, Tri Ratna Bajracharya, and Hari Prasad Pandit. "Effect of dominant parameters for conical basin: Gravitational water vortex power plant." In Proceedings of IOE Graduate Conference, p. 381. 2014.
Heller, Valentin. "Model-prototype similarity." 4th Coastlab Teaching School, Wave and Tidal Energy January (2012): 17-20.
Ho-Yan, Bryan. "Design of a low head pico hydro turbine for rural electrification in Cameroon." PhD diss., The University of Guelph, Canada, 2012.
IRENA. "Renewable Energy Prospects: Indonesia, a REmap Analysis." International Renewable Energy Agency (IRENA), Abu Dhabi, 2017.
Khan, Nauman Hanif. "Blade optimization of gravitational water vortex turbine." PhD diss., Tesis MT, Teknik Mesin, Ghulam Ishaq Khan Institute of Engineering Sciences and Technology, 2016.
Marian, Marius Gheorghe, Tudor Sajin, and Abdelkrim Azzouz. "Study of micro hydropower plant operating in gravitational vortex flow mode." In Applied Mechanics and Materials, vol. 371, pp. 601-605. Trans Tech Publications Ltd, 2013. https://doi.org/10.4028/www.scientific.net/AMM.371.601
Mulligan, Sean. "Experimental and numerical analysis of three-dimensional free-surface turbulent vortex flows with strong circulation." Ireland: Institute of Technology Sligo (2015).
Nishi, Yasuyuki, and Terumi Inagaki. "Performance and flow field of a gravitation vortex type water turbine." International Journal of Rotating Machinery 2017 (2017): 1-11. https://doi.org/10.1155/2017/2610508
Phillips, Tyrone S., and Christopher J. Roy. "Richardson extrapolation-based discretization uncertainty estimation for computational fluid dynamics." Journal of Fluids Engineering 136, no. 12 (2014). https://doi.org/10.1115/1.4027353
Rahman, M. M., J. H. Tan, M. T. Fadzlita, and AR Wan Khairul Muzammil. "A Review on the development of Gravitational Water Vortex Power Plant as alternative renewable energy resources." In IOP Conference Series: Materials Science and Engineering, vol. 217, no. 1, p. 012007. IOP Publishing, 2017. https://doi.org/10.1088/1757-899X/217/1/012007
Shabara, H. M., O. B. Yaakob, Yasser M. Ahmed, and A. H. Elbatran. "CFD simulation of water gravitation vortex pool flow for mini hydropower plants." Jurnal Teknologi 74, no. 5 (2015): 77-81. https://doi.org/10.11113/jt.v74.4645
Direktorat Jenderal Ketenagalistrikan. "Statistik Ketenagalistrikan T.A. 2017." Kementerian Energi dan Sumber Daya Mineral, 2018.
Timilsina, Ashesh Babu, Sean Mulligan, and Tri Ratna Bajracharya. "Water vortex hydropower technology: a state-of-the-art review of developmental trends." Clean Technologies and Environmental Policy 20, no. 8 (2018): 1737-1760. https://doi.org/10.1007/s10098-018-1589-0
Ullah, Rizwan, Taqi Ahmad Cheema, Abdul Samad Saleem, Sarvat Mushtaq Ahmad, Javed Ahmad Chattha, and Cheol Woo Park. "Preliminary experimental study on multi-stage gravitational water vortex turbine in a conical basin." Renewable Energy 145 (2020): 2516-2529. https://doi.org/10.1016/j.renene.2019.07.128