Study on High Pressure Design of Contra-Rotating Small Hydroturbine

Takuji Hosotani; Toru Shigemitsu; Yuki Kawaguchi; Tomofumi Ikebuchi; Takeru Ishiguro

doi:10.5293/IJFMS.2019.12.4.268

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자료유형: 학술저널

저자정보: Takuji Hosotani (Tokushima University) Toru Shigemitsu (Tokushima University) Yuki Kawaguchi (Tokushima University) Tomofumi Ikebuchi (Tokushima University) Takeru Ishiguro (Tokushima University)

저널정보: 한국유체기계학회 International Journal of Fluid Machinery and Systems International Journal of Fluid Machinery and Systems Vol.12 No.4

발행연도: 2019.12

수록면: 268 - 276 (9page)

DOI: 10.5293/IJFMS.2019.12.4.268

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It is requested that the hydroturbine be a small size and have high performance. Therefore, we adopted contrarotating rotors, which can be expected to achieve radial compactification and high performance. However, when the rotors become smaller, the output power of conventional contra-rotating rotors, which are composed of axial flow rotors, is low. In order to achieve small size, high performance and high output power simultaneously, we propose a new type of contra-rotating rotors, which are composed of a hybrid rotor and a centrifugal rotor. In the present paper, we focus on deflection angle of the hydroturbine composed of these rotors as a first step of this research, and investigate performance by the numerical analysis. As a result, we clarified that there is a possibility that even a negative deflection angle functions as a hydroturbine unlike the conventional contra-rotating rotors and leads to best performance.

#Small hydroturbine #Contra-rotating rotor #Deflection angle #Performance #Internal flow

참고문헌 (12)

참고문헌 신청

A. Furukawa / 1998 / Basic Study of Low Head Water Power Utilization by Using Darrieus type Turbine / Trans. JSME (in Japanese) 64(624):2534~2540

T. Kanemoto / 2004 / Development of Gyro type Hydraulic Turbine Su itable for Shallow Stream (1st Report, Rotor Works and Hydroelectric Power Generation) / Trans. JSME (in Japanese) 70(690):413~418

J. Matsui / 2010 / Internal Flow and Performance of the Spiral Water Turbine / Turbomachinery (in Japanese ) 38(6):358~364

T. Ikeda / 2010 / Performance of nano hydraulic turbine utilizing waterfalls / Renewable Energy 35:293~300

M. Nakajima / 2008 / Performance of Savonius Rotor for En vironmentally Friendly Hydraulic Turbine / Journal of Fluid Science and Technology 3(3):420~429

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