중온형 원통다관형 수증기 개질기의 부분단열 및 반경방향 분배 구조의 영향

• Published in: 한국수소 및 신에너지학회 논문집 Vol. 28; no. 6; pp. 618 - 626
• Main Authors: 박다인(Dain Park), 유상석(Sangseok Yu)
• Format: Journal Article
• Language: Korean
• Published: 한국수소및신에너지학회 2017
• Subjects: 기계공학; Shell and tube type; 중온 열원; Medium temperature heat source; Partial insulation; Steam reformer; 수증기 개질기; 외기 열전달; External air heat transfer; 부분 단열; 원통다관형
• ISSN: 1738-7264; 2288-7407
• DOI: 10.7316/KHNES.2017.28.6.618

Conventional high temperature reformers are not suitable for hybrid fuel cell systems that use waste heat as a heat source. So, development of a low temperature type reformer is needed. However, the analysis was conducted in two ways to increase the thermal efficiency, because of low reforming rate due to the low heat source. First, it is a way to ger thermal gain from the outside through partial insulation. In the case of one heat source tube and several heat source tubes, we analyzed the effect of partial heat insulation in some cases. Second, we found the most efficient arrangement of the heat source tubes by changing the location of the heat source tubes. The interpretation was carred out using the COMSOL Mutiphysics program.