Document Type : Research Article

Authors

1 Department of Renewable Energies, School of Mechanical Engineering, Urmia University of Technology, P. O. Box: 57166-17165, Urmia, West Azerbaijan, Iran.

2 Department of Engineering, School of Chemical Engineering, Urmia University, P. O. Box: 57561-51818, Urmia, West Azerbaijan, Iran.

3 a Department of Renewable Energies, School of Mechanical Engineering, Urmia University of Technology, P. O. Box: 57166-17165, Urmia, West Azerbaijan, Iran.

Abstract

In the present work, a Proton-Exchange Membrane Fuel Cell (PEMFC) as a three-dimensional and single phase was studied. Computational fluid dynamics and finite volume technique were employed to discretize and solve a single set of flow fields and electricity governing equations. The obtained numerical results were validated with valid data in the literature and good agreement was observed between them. The main purpose of this paper is to investigate the effect of deformation of the geometric structure of a conventional cubic fuel cell into a cylindrical one. For this purpose, some important parameters indicating the operation of the fuel cell such as oxygen distribution, water, hydrogen, proton conductivity of the membrane, electric current density, and temperature distribution for two voltage differences between the anode and cathode and the proposed models were studied in detail. Numerical results showed that in the difference of voltages studied, the proposed new model had better performance than the conventional model and had a higher current density, in which at V = 0.4 [V], about a 10.35 % increase in the amount of electric current density was observed and the average increment in generated power was about 8 %, which could be a considerable value in a stack of cells. Finally, the discussion of critical parameters for both models was presented in more detail. The core idea of the results is that the Oxygen and Hydrogen utilization, water creation, and heat generation are greater in the new model.

Keywords

Main Subjects

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