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نورس حيدر مصطفى أل سيد حيدر
5/4/2011 2:37:30 PM
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STRUCTURAL DESIGN OF SERPENTINE GAS CHANNEL IN FUEL CELL
Nawras H. Mostafa and Qusay R. Al-Hagag
ABSTRACT Fuel and oxidant gas delivery plate, or fuel cell plate, is a key component of a Proton Exchange Membrane (PEM) fuel cell. To develop low-cost and high performance fuel cell plates, advanced computer modeling and finite element structure analysis are used as useful tools for the optimization of the plates at the early design stage.
In a fuel cell application, these fuel cell plates are routinely heated up to 80oC with structure pressure loads. The temperature induced thermal stresses is found to be much higher that the structure loading stress. Thus, the thermal stresses plays a key role in the structure design and optimization of the plates.
To carry out the analysis, a model of the serpentine plate is analyzed using finite element analysis model for both linear and nonlinear elasticity analysis. Design optimization is applied to minimize the maximum stress within the plate, subject to constraint with both geometry and material parameters as design variables. The study reveals the characteristics of the printed plates, and provides guidelines for the structure and material design of the fuel cell plate. INTRODUCTIONFuel cell, as an electrochemical device that applies hydrogen fuel and oxidant air to produce electricity, is considered as a zero-emission option to reduce air pollution and greenhouse effect. Polymer Exchange Membrane (PEM) fuel cell is a promising alternative to the automotive internal combustion engine as a clean power plant due to its light weight, low operation temperature, and high efficiency. However, one of the major obstacles to the commercialization of PEM fuel cell is its high cost. Fuel cell stack, which is made of many single fuel cells, is the core of the automotive power plant.
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وصف الــ Tags لهذا الموضوع
- gas channel fuel cell, stresses analysis, design optimization, linear and nonlinear analyses, FEA model
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