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논문 기본 정보

자료유형
학술저널
저자정보
윤영환 (창원대학교) 팽진기 (경상대학교)
저널정보
한국태양에너지학회 한국태양에너지학회 논문집 한국태양에너지학회 논문집 제31권 제4호
발행연도
2011.8
수록면
9 - 18 (10page)

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초록· 키워드

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This study assessed the performance of a compact heat exchanger with staggered tube banks for recuperation of high temperature exhaust thermal energy for SOFC fuel cell system. The compact heat exchanger in this study is two pass system which consists of 315×202.5×48.5㎣ and 132 tubes of 6.0㎜Φ for each heat exchanger. From experiments of the 2 pass heat exchanger system, air temperature was increased from 50~85℃ to 402~482℃ while gas temperature was decreased from 600℃ to 305~402℃ according to mass flow rates of 3.9~7.8 g/s. The experimental heat transfer rates of the heat exchanger were compared with CFD numerical solutions with the conventional ζ-NTU method. From the comparisons, the following conclusions were obtained. For the heat exchanger system, the relative errors of heat transfer rate by CFD solution were from 7.1 to 27%, and those by ζ-NTU method were from 0.6% to 21% compared with experimental data. From the comparisons, it can be said that both of CFD and ζ-NTU method almost simulated to experimental data except specific conditions. Pressure drops through air tubes and gas passages were calculated with both of the CFD computation and head loss equations. The differences between them were from 14 to 22%.

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Abstract
1. 서론
2. 열교환기의 성능시험
3. 열교환기의 이론적 해석
4. 수치해석
5. 실험결과 및 계산결과의 비교
6. 결론
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UCI(KEPA) : I410-ECN-0101-2013-563-000792617