자유수면 와류에서 마이크로 소수력의 성능에 풀리가 미치는 영향 분석
Effect Analysis of Pulley on Performance of Micro Hydropower in Free Surface Vortex
0
조회
0
다운로드
3
인용
0
참고문헌
키워드
초록
본 논문은 자유수면을 갖는 와류수차의 성능에 풀리의 영향을 이해하는 것이다. 실험은 개수로 유입구 유량 0.0069 ∼ 0.0077 m3/s 범위에서 물리적 인자(와류높이, 유속, 유효낙차 등)에 따른 수차의 회전수, 전압 및 전류를 측정해분석하였다. 실험결과에 따르면 와류수차의 전압, 전류 및 회전수는 블레이드 형태와 상관없이 풀리비가 증가할 경우감소하였다. 직선형 블레이드와 비틀린 블레이드의 효율은 풀리비 0.45 지점에서 52 %인 반면 소형 비틀린 블레이드의 효율은 풀리비 0.21 지점에서 54 %이다. 와류수차의 최대 발전량은 풀리비 0.5 지점 내에서 발생했다. 와류수차의효율은 풀리비에 따라 0.2 ∼ 58 % 범위에서 관찰되었다.
Abstract
This paper contributes to the understanding of the effect of pulley on the performance of the vortex turbine in free water surface. The experimental work was to analyze the rotation, voltage and current of the turbine due to physical factors (vortex height, velocity, effective head, etc.) at flow rates ranging from 0.0069 to 0.0077 m3/s in the inlet channel. As a result, the experimental values showed that voltage, current and rotational speed of the vortex turbine decreased with increasing the pulley ratio regardless of the blade type. The efficiency of straight blade and twisted blade was 52 % at the gear ratio of 0.45, whereas the efficiency of small twisted blade was 54 % at the pulley ratio of 0.21. The highest amount of the energy generated by the water free vortex turbine occurred within a pulley ratio of 0.5. The efficiency of this vortex turbine was observed at 0.2 ~ 58 % depending on the pulley ratio.
참고문헌 (15)
- 최인호, "저낙차에서 와류발생부를 구비한 마이크로 소수력에 관한 실험 연구", 한국습지학회지, 22(2), pp.121~129 (2020), 한국습지학회
- Gheorghe-Marius, M, "Energy capture in the gravitational vortex water flow", J. of Marine Technology & Environment, 1 (2013)
- Mulligan, S, "Advances in Hydroinformatics", pp.549~569 (2016), Springer
- Stephanie Müller, "Numerical analysis of the compromise between power output and fish-friendliness in a vortex power plant", Journal of Ecohydraulics, 3(2), pp.86~98 (2018), Informa UK Limited[DOI]
- Christophe Nicolet, "Experimental Investigations on Upper Part Load Vortex Rope Pressure Fluctuations in Francis Turbine Draft Tube", International Journal of Fluid Machinery and Systems, 4(1), pp.179~190 (2011), Korean Fluid Machinery Association[DOI]
- Nishi, Y, "Performance and flow field of a gravitation vortex type water turbine", Int. J. Rotating Mach, pp.1~11 (2017)[DOI]
- A. Jacob Odgaard, "Free‐Surface Air Core Vortex", Journal of Hydraulic Engineering, 112(7), pp.610~620 (1986), American Society of Civil Engineers (ASCE)[DOI]
- Dennis Powalla, "A Computational Fluid Dynamics Model for a Water Vortex Power Plant as Platform for Etho- and Ecohydraulic Research", Energies, 14(3), pp.639~ (2021), MDPI AG[DOI]
- Christine Power, "A Parametric Experimental Investigation of the Operating Conditions of Gravitational Vortex Hydropower (GVHP)", Journal of Clean Energy Technologies, 4(2), pp.112~119 (2015), EJournal Publishing[DOI]
- H. M. Shabara, "CFD Simulation of Water Gravitation Vortex Pool Flow for Mini Hydropower Plants", Jurnal Teknologi, 74(5), pp.77~81 (2015), Penerbit UTM Press[DOI]
- Vu, T, "Flow simulation and efficiency hill chart prediction for a Propeller turbine", International Journal of Fluid Machinery and Systems, 4(2), pp.243~254 (2011)[DOI]
- Sujate Wanchat, "Preliminary Design of a Vortex Pool for Electrical Generation", J. of Computational and Theoretical Nanoscience, 13(1), pp.173~177 (2012), American Scientific Publishers[DOI]
- Wagner, F, "Laboruntersuchungen zum Fischabstieg über ein Wasserwirbelkraftwerk", Wasserwirtschaft, 109, pp.64~67 (2019)
- Ede Mehta Wardhana, "Analysis of Gottingen 428 Airfoil Turbine Propeller Design with Computational Fluid Dynamics Method on Gravitational Water Vortex Power Plant", International Journal of Marine Engineering Innovation and Research, 3(3), pp.69~77 (2019), Lembaga Penelitian dan Pengabdian kepada Masyarakat ITS[DOI]
- Zotloeterer, F, "Hydroelectric power plant", Patent WO 2004, 2004