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RISS 인기검색어
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- 저자 : 노형철(Hyung-Chul Noh) (검색결과 3 건)
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아이들링 시 배기시스템 용적이 SI 기관의 연소특성에 미치는 영향
노형철,박경석,손성만,Noh, Hyung-Chul,Park, Kyoung-Suk,Son, Sung-Man 한국자동차공학회 2007 한국 자동차공학회논문집 Vol.15 No.4
We research into the exhaust system volume what proving the optimum exhaust performance and combustion characteristics. Many automobile manufactures have developed complex exhaust system for environment regulation and noise reduction. This complex exhaust system provides acoustics silencing and low frequency noise for customers demand. Recently, automobile exhaust system have made the Dual muffler concerning to the noise and vibration reduction. Also it bring the engine performance down by decreasing the back pressure and temperature in the exhaust system. The experiments are carried out different volume of exhaust system. In order to establish the optimized conditions design factors which are taking exhaust system volume, it show how the exhaust performance influence on the engine performance in idling.
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연료전지 개질기용 증발기의 작동유체 흐름 방향에 따른 열특성에 관한 연구
서호철(Ho-Cheol Suh),노형철(Hyung-Chul Noh),박경석(Kyoung-Suk Park) 한국자동차공학회 2012 한국자동차공학회 학술대회 및 전시회 Vol.2012 No.11
Steam reformer was organized with steam reforming process and CO removing process. The steam reforming process needed high temperature, 600~900℃, for catalytic-reaction which was extract of hydrogen from steam and hydrocarbon. In this paper, miniaturization and performance improvement for the operation of the evaporator according to the direction of fluid flow to investigate the thermal characteristic. The thermal characteristic was investigated mass flow rate, specific heat, and temperature difference of working fluid. In addition, the fuel cell reformer was to secure the reliability attached to the actual reformer and operated.
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연료전지 개질기용 증발기 열교환 성능을 위한 증발기 형상에 관한 연구
서호철(Ho Cheol Suh),김규준(Kyu Jun Kim),노형철(Hyung Chul Noh),박경석(Kyoung Suk Park) Korean Society for Precision Engineering 2011 한국정밀공학회지 Vol.28 No.1
Steam reformer was organized with steam reforming process and CO removing process. The steam reforming process needed high temperature, 600~900 ℃, for catalytic-reaction which was extract of hydrogen from steam and hydrocarbon. The effects of the evaporator configuration on its heat transfer characteristics were investigated both experimentally and numerically to pursue the miniaturization. In this study, three configurations were considered where the different structures were tested; empty, embossing and mesh filled. For the comparison of heat transfer performance of shape evaporator disk, numerical analysis using SC-Tetra code and experiment were carried out. In case of reformer system design, it should be considered heat transfer rate, differential pressure and fluid flow direction.
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