The Design and Usage of a Visual Direct Methanol Fuel Cell

Nordlund, Joakim; Picard, Cyril; Birgersson, Erik; Vynnycky, Michael; Lindbergh, Göran
August 2004
Journal of Applied Electrochemistry;Aug2004, Vol. 34 Issue 8, p763
Academic Journal
in order to better understand the influence of gas evolution on the performance of the direct methanol fuel cell (DMFC) anode, a visual DMFC, comprising of a transparent anode and a cathode endplate with an integrated heat exchanger, and a picture analysis methodology were developed. The result was an inexpensive, but very powerful, tool for analyzing the role of two-phase flow. An important finding is that gas bubbles do not appear uniformly throughout the fluid flow matrix, but rather only at a few active sites. Another important finding is that the gas saturation (volume fraction of gas/volume fraction of liquid) increases along the streamwise direction.


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