촉매유효도 상관식에 기반한 마이크로 채널형 수증기/메탄 개질기의 효율적인 전산유체역학 해석모델

• Published in: 한국수소 및 신에너지학회 논문집 Vol. 33; no. 6; pp. 749 - 760
• Main Authors: 오윤석(YUN SEOK OH), 정아름(AREUM JEONG), 남진현(JIN HYUN NAM)
• Format: Journal Article
• Language: Korean
• Published: 한국수소및신에너지학회 2022
• Subjects: Nickel washcoat layer(니켈 워시코트 촉매층); Microchannel-type reformer(마이크로 채널형 개질기); Catalyst effectiveness factor(촉매유효도); Effectiveness factor correlation(유효도 상관식); Steam/methane reforming(수증기/메탄 개질); /
• ISSN: 1738-7264; 2288-7407
• DOI: 10.7316/KHNES.2022.33.6.749

An efficient computational fluid dynamics model was proposed for simulating microchannel-type steam/methane reformers with thin washcoat catalyst layers. In this model, by using the effectiveness factor correlations, the overall reaction rate that occurs in the washcoat catalyst layer could be accurately estimated without performing the detailed calculation of heat transfer, mass transfer, and reforming reactions therein. The accuracy of the proposed model was validated by solving a microchannel-type reformer, once by fully considering the complex steam/methane reforming (SMR) process inside the washcoat layer and again by simplifying the SMR calculation using the effectiveness factor correlations. Finally, parametric studies were conducted to investigate the effects of operating conditions on the SMR performance.