瓩級水冷式質子交換膜燃料電池堆性能研究

康嘉顯

doi:10.6844/NCKU.2015.00813

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瓩級水冷式質子交換膜燃料電池堆性能研究

Performance of kW-scale Water-cooled PEMFC Stack

康嘉顯 , Masters　　Advisor：賴維祥　　

繁體中文 DOI： 10.6844/NCKU.2015.00813

瓩級電池堆；水冷式電池堆；質子交換膜燃料電池堆；性能曲線；阻抗分析； kW-scale stack ； Water-cooled stack ； Proton exchange membrane fuel cell (PEMFC) ； Polarization curve ； Impedance analysis

Abstract │ Reference (58) │ Altmetrics

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In this study, a kW-scale water-cooled PEMFC stacks is designed and tested under different conditions, including fuel conditions, inlet water temperatures , inlet water flow rates, in order to understand effects of the above three parameters on the stack performance and impedance. Based on the qualitative analysis of the experimental results, the gas parameters and thermal management conditions which make the water-cooled PEMFC stack best to be uniform thermally are applied to the stack. The experimental results show that the best performance of this stack, 1431 Watts, and its power density, 694.8 mW/cm2 is exhibited at the inlet water flow rate of 5 L/min, the inlet water temperature of 55oC, the hydrogen stoichiometric ratio of 1.5, the air stoichiometric ratio of 3.0, the air dew point temperature of 65oC. And the maximum power generating efficiency is up to 40.6 %.
In addition, with increasing the inlet water temperature and decreasing the inlet water flow rate will decrease the charge transfer resistance because elevated stack temperatures improve the electrochemical reaction. However, the Ohmic resistance rises due to membrane dehydration at elevated stack temperatures. It is also noticed that the stack performance changes significantly with temperature operating conditions at low inlet water flow rates owing to significantly non-uniform temperature distributions over the stack. As a result, the inlet water temperature becomes a critical operational parameter at low inlet water flow rates.

Reference ( 58 ) 〈TOP〉

[1] Squadrito, G., Giacoppo, G., Barbera, O., Urbani, F., Passalacqua, E., Borello, L., Musso, A., and Rosso, I., "Design and development of a 7kW polymer electrolyte membrane fuel cell stack for UPS application," International Journal of Hydrogen Energy, 2010, Vol. 35, pp.9983-9989.
連結：
[2] Ferraro, M., Sergi, F., Brunaccini, G., Dispenza, G., Andaloro, L., and Antonucci, V., "Demonstration and development of a polymer electrolyte fuel cell system for residential use," Journal of Power Sources, 2009, Vol. 193, pp.342-348.
連結：
[3] Corbo, P., Migliardini, F., and Veneri, O., "Experimental analysis and management issues of a hydrogen fuel cell system for stationary and mobile application," Energy Conversion and Management, 2007, Vol. 48, pp.2365-2374.
連結：
[4] Van Dokkum, J., and Dasinger, A., "Meeting the challenges in the transport sector," Journal of Power Sources, 2008, Vol. 181, pp.378-381.
連結：
[5] Corbo, P., Migliardini, F., and Veneri, O., "An experimental study of a PEM fuel cell power train for urban bus application," Journal of Power Sources, 2008, Vol. 181, pp.363-370.
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