Abstract
To achieve an optimal perception of cardinal processes and prior to prototype fabrication to fuel cell optimization, modeling is extensively used in industrial researches and applications to transfer mass and heat into small-sized channels. In the current study, Computational Fluid Dynamics is presented to cylindrical polymer fuel cell with circular and elliptical cross-section. Concurrently, the design of fractured electrode-membrane assembly is introduced. The simulations explicitly demonstrate comparing to Base case production, the fractured case of the Electrode Membrane Assembly produces more current. Likewise, a new design for cylindrical polymer fuel cell is illustrated. In the cylindrical design, both the effect of gradual geometric changes on the performance including radius changes and the transformation of cross-section from circle to ellipse has been investigated and compared to Base case. The obtained results displays the cylindrical fuel cell’s better performance compared to Base case. Accordingly, establishing wider passage, in same volume for reactive gases toward reaction areas, results in sharp increase in the performance. Finally, validating simulation with valid laboratory results, proper correspondence is achieved.
Highlights
The proton membrane fuel cell, a novel future energy source, applying a polymer membrane as electrolyte, has attracted intense attention for transportation and residential purposes [1]
A fuel cell generally works with these rules: as hydrogen gas flows into fuel cell on anode side, a platinum catalytic layer facilitates the oxidation of hydrogen gas leading to the production of proton and electron
Hydrogen ions are directly transferring to a membrane and anew with catalytic layer's assistance combine with oxygen and electrons to produce water [8]
Summary
The proton membrane fuel cell, a novel future energy source, applying a polymer membrane as electrolyte, has attracted intense attention for transportation and residential purposes [1]. Cylindrical polymer fuel cell, as completely novel design is presented and after studying its full performance compared with Base case. The present research, initially, investigates geometric changes effect in electrode membrane assembly and afterwards through modeling cylindrical fuel cell, studies its effect on cell performance.
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