4.7 Article

Mass transfer and reaction in methanol steam reforming reactor with fractal tree-like microchannel network

Journal

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
Volume 87, Issue -, Pages 279-283

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijheatmasstransfer.2015.04.006

Keywords

Methanol steam reforming; Reactor; Fractal; Tree; Microchannel

Funding

  1. National Natural Science Foundation of China [51222605, 51306158]
  2. Natural Science Foundation for Distinguished Young Scholars of Jiangsu Province [BK20130009]

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A three-dimensional model of methanol steam reforming is developed and numerically analyzed to investigate the mass transfer and reaction in a fractal tree-like microchannel network. The effects of temperature, pressure and bifurcation angle on the reaction performance are examined and discussed. The reaction rate and figure of merit (FoM) in a tree-like network are evaluated and compared with corresponding serpentine channel. The results indicate that the existence of bifurcation plays an important role in the mass transfer and chemical reaction in a microreactor. The reaction rate and FoM in treelike network are more superior to serpentine channel. In addition, in a tree-like network, the reaction rates are improved by increasing operating temperature and pressure. Interestingly, the role of branching angle on chemical reaction performance is less significant in a fractal microreactor. (C) 2015 Elsevier Ltd. All rights reserved.

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