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대한인쇄문화협회
- 프린팅코리아
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- v.14 no.9
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- pp.102-103
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- 2015
우리나라 인쇄업계의 메카인 충무로에서 지난 40여 년 한길 같이 패키지 태그 라벨전문 업체로 활동해 온 새한디앤피가 최근 스크린 HD코리아가 공급하는 디지털 엠보싱 전용기 스코틱스 울트라 프로를 도입하고 재도약을 다짐하고 있다.
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Ham, Sangwoo;Choi, Ji-Woong;Jeong, Changho;Kim, Taeyun;Choi, Sangin;Jin, Glenn Young;Lee, Jeong Wan;Ha, Hojin
- Journal of the Korean Society of Manufacturing Process Engineers
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- v.20 no.2
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- pp.107-119
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- 2021
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.
https://doi.org/10.14775/ksmpe.2021.20.02.107 인용 PDF KSCI