Development of an undershot cross-flow hydraulic turbine resistant to snow and ice masses flowing in an installation canal

Eiichi Satou, Toshihiko Ikeda, Tomomi Uchiyama, Tomoko Okayama, Tomoaki Miyazawa, Kotaro Takamure and Daisuke Tsunashima

Renewable Energy, 2022, vol. 200, issue C, 146-153

Abstract: This study developed a microhydraulic turbine that can stably and efficiently generate electricity even in canals where snow and ice masses frequently flow down. An undershot cross-flow hydraulic turbine was selected as the development target, and experiments were conducted in an irrigation canal in a heavy snowfall area. Spherical snowballs were made to flow down to the turbine from the upstream direction. The behavior of the snowballs and the power generation performance were investigated as these snowballs passed through the rotor. When the diameter of the snowball is smaller than the blade interval of the rotor, the snowball passing through the rotor causes a small decrease in power output. In contrast, when the diameter of the snowball is larger than the blade interval, the snowball is entrained between the rotor and canal bottom, temporarily stopping the rotor, and resulting in a large decrease in power generation. These results suggest that an undershot cross-flow hydraulic turbine can reduce power generation performance due to snow and ice masses when its blade interval is larger than the expected size of the snow and ice masses. This study developed some design guidelines for this turbine that are highly adaptable to snow- and ice-flowing irrigation canals.

Keywords: Undershot cross-flow hydraulic turbine; Snow and ice masses; Power generation performance; Irrigation canal (search for similar items in EconPapers)
Date: 2022
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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:200:y:2022:i:c:p:146-153

DOI: 10.1016/j.renene.2022.09.062

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