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http://dx.doi.org/10.14775/ksmpe.2021.20.02.107

Fabrication and Performance Demonstration of the 20kW Class Inverted-type Cross-flow Turbine Based on Computational Fluid Dynamics Analysis  

Ham, Sangwoo (Interdisciplinary Program in Biohealth-machinery convergence engineering, Graduate School, Kangwon National University)
Choi, Ji-Woong (Interdisciplinary Program in Biohealth-machinery convergence engineering, Graduate School, Kangwon National University)
Jeong, Changho (New Korea Technology Co., Ltd.)
Kim, Taeyun (New Korea Technology Co., Ltd.)
Choi, Sangin (New Korea Technology Co., Ltd.)
Jin, Glenn Young (New Korea Technology Co., Ltd.)
Lee, Jeong Wan (Division of Mechanical and Biomedical, Mechatronics, and Materials Science and Engineering, Kangwon National University)
Ha, Hojin (Interdisciplinary Program in Biohealth-machinery convergence engineering, Graduate School, Kangwon National University)
Publication Information
Journal of the Korean Society of Manufacturing Process Engineers / v.20, no.2, 2021 , pp. 107-119 More about this Journal
Abstract
The cross-flow turbine is one of the most famous and widely used hydraulic power systems for a long time. The cross-flow turbine is especially popular in many countries and remote regions where off-grided because of its many benefits such as low cost, high efficiency at low head, simple structure, and easy maintenance. However, most modern turbines, including the cross-flow turbine, are unsuitable for the ultra-low head situation, known as less than 3m water head or zero head with over 0.5m/s flow velocity. In this study, we demonstrated a 20kW class inverted-type cross-flow turbine's performance. First, we reevaluated our previous studies and introduced how to design the inverted-type cross-flow turbine. Secondly, we fabricated the 20kW class inverted-type cross-flow turbine for the performance test. And then, we designed a testbed and installed the turbine system in the demonstration facility. In the end, we compare the demonstration with its previous CFD results. The comparing result shows that both CFD and real model fitted on guide vane angle at 10 degrees. At the demonstration, we achieved 42% turbine efficiency at runner speed 125 RPM.
Keywords
Performance Demonstration; Computational Fluid Dynamics; Cross-flow Turbine; Micro Hydro Power; Ultra-low Head;
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