標題: Numerical study of heat and mass transfer in a plate methanol steam micro reformer with methanol catalytic combustor
作者: Hsueh, Ching-Yi
Chu, Hsin-Sen
Yan, Wei-Mon
Chen, Chiun-Hsun
機械工程學系
Department of Mechanical Engineering
關鍵字: Micro reformer;Catalytic combustor;Methanol;Numerical analysis
公開日期: 1-六月-2010
摘要: A numerical study is performed to examine the characteristics of heat and mass transfer and the performance of a plate methanol steam micro reformer with a methanol catalytic combustor. The effects of the flow configurations for co- and counter-current flows are explored in the present study. The influences of the Reynolds number (Re) and various geometric parameters on heat and mass transfer phenomena in the channels are also investigated numerically. It is expected that the Reynolds number (Re) and various geometric parameters can be improved by thermal management to enhance the chemical reaction and thus augment the micro reformer performance. Comparing the co- and counter-current flows via numerical simulation, the results show that the methanol conversion for counter-current flow could be improved by 10%. This is due to the fact that counter-current flow leads to a better thermal management, which in turn improves fuel conversion efficiency. With a higher Reynolds number on the combustor side, the wall temperature is increased and the methanol conversion can thus be enhanced. Meanwhile, a reduced Reynolds number on the micro reformer side would increase the methanol conversion. The results also reveal that appropriate geometric parameters exist for a micro reformer with a combustor to obtain better thermal management and methanol conversion. (C) 2010 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.
URI: http://dx.doi.org/10.1016/j.ijhydene.2010.03.036
http://hdl.handle.net/11536/5326
ISSN: 0360-3199
DOI: 10.1016/j.ijhydene.2010.03.036
期刊: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume: 35
Issue: 12
起始頁: 6227
結束頁: 6238
顯示於類別:期刊論文


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