Numerical study of heat and mass transfer in the plate methanol steam micro-reformer channels

Ching Yi Hsueh, Hsin Sen Chu, Wei Mon Yan*, Chiun-Hsun Chen, Min Hsing Chang

*Corresponding author for this work

Research output: Contribution to journalArticle

12 Scopus citations

Abstract

Effects of geometric and thermo-fluid parameters on performance and heat and mass transfer phenomena in micro-reformer channels were investigated by mathematical modeling. The geometric parameters considered were the channel length, channel height, catalyst thickness and catalyst porosity, while the thermo-fluid parameters included wall temperature, inlet fuel temperature, fuel ratio and Reynolds number. The results of the modeling suggest that the methanol conversion could be improved by 49%-points by increasing the wall temperature from 200 °C to 260 °C. The results also show that the CO concentration would be reduced from 1.72% to 0.95% with the H2O/CH3OH molar ratio values ranging from 1.0 to 1.6. The values of parameters that enhance the performance of micro-reformer were identified, such as longer channel length, smaller channel height, thicker catalyst layer, larger catalyst porosity, lower Reynolds number and higher wall temperature.

Original languageEnglish
Pages (from-to)1426-1437
Number of pages12
JournalApplied Thermal Engineering
Volume30
Issue number11-12
DOIs
StatePublished - 1 Aug 2010

Keywords

  • Heat and mass transfer
  • Methanol
  • Micro-reformer
  • Numerical analysis

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