Flow rate and humidification effects on a PEM fuel cell performance and operation
| Autor: | Harvey G. Stenger, Galip H. Guvelioglu |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
Hydrogen
Renewable Energy Sustainability and the Environment business.industry Nuclear engineering Airflow Electrical engineering Energy Engineering and Power Technology Proton exchange membrane fuel cell chemistry.chemical_element Electrolyte Computational fluid dynamics Finite element method Volumetric flow rate chemistry Electrode Electrical and Electronic Engineering Physical and Theoretical Chemistry business |
| Zdroj: | Journal of Power Sources. 163:882-891 |
| ISSN: | 0378-7753 |
| DOI: | 10.1016/j.jpowsour.2006.09.052 |
| Popis: | A new algorithm is presented to integrate component balances along polymer electrolyte membrane fuel cell (PEMFC) channels to obtain three-dimensional results from a detailed two-dimensional finite element model. The analysis studies the cell performance at various hydrogen flow rates, air flow rates and humidification levels. This analysis shows that hydrogen and air flow rates and their relative humidity are critical to current density, membrane dry-out, and electrode flooding. Uniform current densities along the channels are known to be critical for thermal management and fuel cell life. This approach, of integrating a detailed two-dimensional across-the-channel model, is a promising method for fuel cell design due to its low computational cost compared to three-dimensional computational fluid dynamics models, its applicability to a wide range of fuel cell designs, and its ease of extending to fuel cell stack models. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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