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http://dx.doi.org/10.7316/KHNES.2013.24.6.495

A Numerical Investigation of Effects of Methanol Concentration Fluctuation in Active-type Direct Methanol Fuel Cell (DMFC) Systems  

Gwak, Geonhui (School of Mechanical Engineering, Inha, University)
Ko, Johan (School of Mechanical Engineering, Inha, University)
Lee, Suwon (School of Energy Resources Engineering, Inha, University)
Lee, Jinwoo (LIGnex1 Co., Ltd.)
Peck, Donghyun (Fuel Cell Research Center Korea Institute Energy Research)
Jung, Doohwan (Fuel Cell Research Center Korea Institute Energy Research)
Ju, Hyunchul (School of Mechanical Engineering, Inha, University)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.24, no.6, 2013 , pp. 495-509 More about this Journal
Abstract
In this study, we develop a one-dimensional (1-D), two-phase, transient-thermal DMFC model to investigate the effect of methanol concentration fluctuation that usually occurs in active-type direct methanol fuel cell (DMFC) systems. 1-D transient simulations are conducted and time-dependent behaviors of DMFCs are analyzed under various DMFC operating conditions such as anode/cathode stoichiometry, cell temperature, and cathode inlet humidification. The simulation results indicate that the effect of methanol concentration fluctuation on DMFC performance can be mitigated by proper control of anode/cathode stoichiometry, providing a guideline to optimize operating conditions of active DMFC systems.
Keywords
Methanol feed concentration; Direct methanol fuel cell; Active DMFC systems; One-dimensional simulations;
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