An Analytical Study of The Pem Fuel Cell

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Raissi, Porya | 2013

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 44018 (01)
University: Sharif University of Technology
Department: Mechanical Engineering
Advisor(s): Nouri Borujerdi, Ali
Abstract:
In this thesis, the quasi-two-dimensional modeling of polymer electrolyte membrane fuel cell cathode side is presented as a single phase. Polymer membrane fuel cell modeling equations are solved in the equations of continuity, momentum, and chemical species are potential equation. In this report, for modeling the electrochemical reaction in the catalyst layer of the relationship Baltr-Vollmer is used. The present analytical solution based on two fixed pressure gradient and the velocity dependent pressure gradient is developed. Momentum and continuity equations in the model with separation, velocity and pressure field is achieved. By comparing the results of the modeling analysis with analytical and experimental results presented in various references, fairly good agreement was found between them. The modeling capability of various parameters influencing the behavior of the fuel cell as an oxygen diffusion coefficient, pressure gradient, and ... . The results show that decreasing pressure gradient, increased penetration and reduced oxygen pressure gradient model dependent constant infiltration rate (a) a polymer membrane fuel cell performance improves
Keywords:
Proton Exchange Membrane (PEM)Fuel Cell ; Analytical Solution ; Polarization Curve ; Axial Convection