The optimization of parallel channel patterns design on micro methanol steam reformer

研究成果: Conference contribution

摘要

This study was aimed at the performance of micro methanol steam reformer for channel widths optimization by simplified conjugate gradient method (SCGM) with minimum objective function of velocity standard deviation. A threedimensional numerical model and optimal algorithm named simplified conjugate gradient method (SCGM) were built for predicting the dominating factors in channel widths. In the optimization searching process, the simulation model only includes the continuity and the momentum equations for decreasing the computational time. When the optimum channel width of different inlet flow rate and its distributions are obtained by SCGM with minimum objective function, the species and energy equations are applied to evaluate the performance of steam reformer. Distributions of velocity were predicted, and the methanol conversion ratio was also evaluated. In addition, the mole fraction of CO contained in the reformed gas, which is essential to prevent the catalyst layers of fuel cells from poisoning, is also investigated. Furthermore, the present simulation model was also compared with existing experiment data, and the close agreement was found. Results show that the methanol conversion ratio can be improved from 54.2% to 62.6% for the particular case at 0.6 cc/min flow rate if the channel widths are optimized. On the other hand, the mole fraction of carbon monoxide is increased from 2.85 % (original) to 5.21 % (optimal) at Q&=0.6 cc min-1.

原文English
主出版物標題ASME 2010 8th International Conference on Nanochannels, Microchannels, and Minichannels Collocated with 3rd Joint US-European Fluids Engineering Summer Meeting, ICNMM2010
頁面1065-1074
頁數10
版本PARTS A AND B
DOIs
出版狀態Published - 2010 十二月 1
事件ASME 2010 8th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM2010 Collocated with 3rd Joint US-European Fluids Engineering Summer Meeting - Montreal, QC, Canada
持續時間: 2010 八月 12010 八月 5

出版系列

名字ASME 2010 8th International Conference on Nanochannels, Microchannels, and Minichannels Collocated with 3rd Joint US-European Fluids Engineering Summer Meeting, ICNMM2010
號碼PARTS A AND B

Other

OtherASME 2010 8th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM2010 Collocated with 3rd Joint US-European Fluids Engineering Summer Meeting
國家Canada
城市Montreal, QC
期間10-08-0110-08-05

    指紋

All Science Journal Classification (ASJC) codes

  • Fluid Flow and Transfer Processes

引用此

Jang, J-Y., Huang, Y. X., & Cheng, C-H. (2010). The optimization of parallel channel patterns design on micro methanol steam reformer. 於 ASME 2010 8th International Conference on Nanochannels, Microchannels, and Minichannels Collocated with 3rd Joint US-European Fluids Engineering Summer Meeting, ICNMM2010 (PARTS A AND B 編輯, 頁 1065-1074). (ASME 2010 8th International Conference on Nanochannels, Microchannels, and Minichannels Collocated with 3rd Joint US-European Fluids Engineering Summer Meeting, ICNMM2010; 編號 PARTS A AND B). https://doi.org/10.1115/FEDSM-ICNMM2010-30111