CFD modeling and optimization of fuel-cell systems /

Detalles Bibliográficos
Clasificación:Libro Electrónico
Otros Autores: Zervas, P. L.
Formato: Electrónico eBook
Idioma:Inglés
Publicado: New York : Nova Science Publishers, ©2008.
Temas:
Fuel cells > Mathematical models.
Computational fluid dynamics.
Fluid dynamics > Mathematics.
Dynamique des fluides numérique.
Dynamique des fluides > Mathématiques.
TECHNOLOGY & ENGINEERING > Electrical.
Computational fluid dynamics
Fluid dynamics > Mathematics
Fuel cells > Mathematical models
Acceso en línea:Texto completo
Tabla de Contenidos:
  • CFD MODELING AND OPTIMIZATION OF FUEL-CELL SYSTEMS; NOTICE TO THE READER; ACKNOWLEDGEMENTS; CONTENTS; PREFACE; NOMENCLATURE; ABBREVIATIONS; INTRODUCTION; BASIC OPERATIONAL PRINCIPLES; 2.1. FUEL CELL DESCRIPTION; 2.2. MAXIMUM ELECTROMOTIVE FORCE (EMF) OR OPEN CIRCUIT VOLTAGE (OCV); 2.3. CURRENT DENSITY-POWER DENSITY; 2.4. FUEL-CELL EFFICIENCY; 2.5. NERNST EQUATION; 2.6. IRREVERSIBLE PROCESSES UNDER OPERATING CONDITIONS; 2.6.1. Activation Polarization (EVact); 2.6.2. Ohmic Losses (EVohmic); 2.6.3. Concentration Polarization (EVconc); 2.6.4. Total Losses; 2.7. ELECTROCHEMICAL REACTION RATES.
  • 2.8. FUEL CELL OPERATING PARAMETERSTHE MATHEMATICAL MODEL; 3.1. THE EQUATIONS; 3.2. MODEL ASSUMPTIONS; 3.3. BOUNDARY CONDITIONS-SPECIAL INTERNAL CONDITIONS; NUMERICAL SOLUTION METHOD; 4.1. INTRODUCTION; 4.2. THE SOLUTION METHOD; 4.3. NUMERICAL SOLUTION; 4.4. MODEL APPLICATION; 4.4.1. Fuel Cell Geometry; 4.4.2. Boundary Conditions; 4.4.3. Grid-Independency Studies
  • Computer Requirements; RESULTS; 5.1. INTRODUCTION; 5.2. PART I: R2-ENRICHED AIR FLOW; 5.2.1. Necessity of Using R2- Enriched Air Flow; 5.2.2. Enrichment of Air Flow with R2; 5.2.3. Fuel- and Oxidant-Gas Utilization Uf, Uox.
  • 5.2.4. Fuel-Cell Operating Conditions5.2.5. Influence of Oxygen-Enriched Air Flow on Fuel Cell Performance; 5.2.6. The Influence of Oxygen Enriched Air Flow onFuel-Cell-Stack Power; 5.2.7. Advantages
  • Disadvantages of Using Oxygen Enriched Air Current; 5.2.8. Performance of Fuel Cells Supplied with Pure Hydrogen and Oxygen; 5.3. PART II: ATMOSPHERIC AIR FLOW RATE; 5.3.1. Fuel and Oxidant inlet Volumetric Rates, Qf, Qox; 5.3.2. Fuel and Oxidant Gases; 5.3.3. Operating Cell Voltage; 5.3.4. Fuel cell Power; 5.3.5. Fuel Cell Efficiency.
  • 5.3.6. Influence of Oxidant Gas Inlet Volumetric Rate in Fuel Cell Performance5.3.7. Choice of m, n Coefficients; CONCLUSION; APPENDIX; A.1. ACTIVATION OVERPOTENTIAL; A.2. MODEL VALIDATION; A.3. EMPIRICAL EQUATION FOR THE MASS TRANSPORT LOSSES ESTIMATION; REFERENCES; INDEX.

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