지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학위논문
- 저자정보
- 발행연도
- 2015
- 저작권
- 경상대학교 논문은 저작권에 의해 보호받습니다.
이용수1
이 논문의 연구 히스토리 (2)
- 이 논문의 후속연구가 궁금하신가요?
- 연관 학술논문 또는 학술발표를 통해 보다 발전된 연구결과를 확인하실 수 있습니다.
- 이 논문의 연구 히스토리 확인하기
초록· 키워드
오류제보하기
There is great interest in producing hydrogen for small fuel cell applications to provide high volumetric and gravimetric energy density for miniaturized portable electronic systems. Of special interest is the need to develop efficient micro-reformers to convert hydro-carbon fuel into hydrogen which can be delivered to a proton exchange membrane fuel cell to produce electricity.
However, most researches performed domestically have been focused on a cylindrical or rectangular channel reformer with a catalyst packed bed. This type of reformer has a low efficiency and the systematic analysis of reforming convert processes in the reactor has not been performed yet.
The curved channel steam-methanol reformer was designed to resolve those problems and to apply such to Proton Exchange Membrane Fuel Cell (PEMFC). Flow characteristics and mass transfer characteristics of steam-methanol mixture have been investigated and numerically analyzed to improve the conversion efficiency of methanol in the reactor.
As a result, methanol conversion efficiency was dominantly affected by the residence time of the methanol mixture in the reactor. It is also figured out that a rectangular type tube and bent tube angle of 45 degrees can be guaranteed with uniformity of methanol concentration than a round type tube and bent tube angle of 90 degrees. Such is expected to be useful basic design data to help in designing and improving a steam-methanol reformer.
However, most researches performed domestically have been focused on a cylindrical or rectangular channel reformer with a catalyst packed bed. This type of reformer has a low efficiency and the systematic analysis of reforming convert processes in the reactor has not been performed yet.
The curved channel steam-methanol reformer was designed to resolve those problems and to apply such to Proton Exchange Membrane Fuel Cell (PEMFC). Flow characteristics and mass transfer characteristics of steam-methanol mixture have been investigated and numerically analyzed to improve the conversion efficiency of methanol in the reactor.
As a result, methanol conversion efficiency was dominantly affected by the residence time of the methanol mixture in the reactor. It is also figured out that a rectangular type tube and bent tube angle of 45 degrees can be guaranteed with uniformity of methanol concentration than a round type tube and bent tube angle of 90 degrees. Such is expected to be useful basic design data to help in designing and improving a steam-methanol reformer.
목차
Ⅰ. 서론 11.1 연구 배경 및 목적 11.2 국내외 연구동향 51.3 연구 방법 및 범위 8Ⅱ. 이론적 배경 102.1 연료전지(Fuel cell)의 개요 및 특징 102.2 연료전지의 종류 122.3 수증기-메탄올 개질 142.4 화학반응률(Chemical reaction rate) 162.5 분자확산(Molecular diffusivity) : 분자운동이론 172.6 열전도(Thermal conductivity) 202.7 촉매반응기 압력강하(Pressure drop) 21Ⅲ. 마이크로 개질 반응기의 수치해석 모델 검증 223.1 원통 채널형 개질기(Cylindrical channel reformer) 233.2 모델링 및 경계조건 263.3 선행연구모델 수치해석 결과 비교 29Ⅳ. 곡유로 채널형 개질기 수치해석 324.1 곡유로 채널형 개질기 324.2 원통 채널형과 곡유로 채널형 개질기 수치해석 결과 비교 344.3 곡유로 채널형 개질기의 유량 변화에 따른 수치해석 결과 424.4 곡유로 채널형 개질기의 형태 변화에 따른 수치해석 454.5 곡유로 채널형 개질기의 형태 변화에 따른 수치해석 결과 47Ⅴ. 결론 54참고 문헌 56
최근 본 자료
댓글(0)
0