Abstract
The commercial fuel cell products currently appearing on the market are self-contained fuel cell engines. These engines can be used for many applications that are presently dominated by internal combustion engines or batteries. Vehicle mounted fuel cell auxiliary power units have been attracting attention lately. Additionally, there is a market based incentive to use multiple small fuel cell arrays in place of a single large fuel cell for some applications. Typically, fuel cells are designed to operate as stand-alone units. This paper investigates the ability of small commercial stacks to operate in common array arrangements. Although an individual Nexa is able to produce 1500 W, Dual Nexas do not maintain that capability while in array configurations. With an overall load share ratio of 1.02:1 the series array reliably produced 2900 W of power, while with an overall load share ratio of 1.09:1 the parallel array reliably produced only 2800 W of power. This study shows that array orientation affects both system stack net efficiency and individual stack net efficiency. The information gained from this study may be helpful for fuel cell design and integration.
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Abbreviations
- ANOVA:
-
analysis of variation
- APU:
-
auxiliary power unit
- FC:
-
fuel cell
- PCV:
-
purge cell voltage
- PEM:
-
polymer electrolyte membrane
- VOC :
-
open circuit voltage
References
Ballard Power Systems (2004). Nexa Power Module Specification Sheet [online]. Ballard Power System Inc. Available from: http://www.ballard.com/resources/powergen/NexaSpecSheet.pdf [accessed 11 Dec 2006]
Brodrick, C. J. (2002). Evaluation of fuel cell auxiliary power units for heavy-duty diesel trucks. Transportation Research-Part D 7,4, 303–315.
Brodrick, C. J. (2000). Demonstration of a proton exchange membrane fuel cell as an auxiliary power source for heavy trucks. SAE Paper No. 2000-01-3488.
Cacciola, G., Antonucci, V. and Freni, S. (2001). Technology up date and new strategies on fuel cells. J. Power Sources 100,1–2, 67–79.
EG&G Technical Services, Inc. (2002). Fuel Cells: A Handbook. 6th Edn. US Department of Energy. Illinois.
He, B., Ouyang, M. and Lu, L. (2005). Modeling and PI control of diesel APU for series hybrid electric vehicles. Int. J. Automotive Technology 7,1, 91–99.
Neter, J., Kutner, M. H., Nachtsheim, C. J. and Wasserman, W. (1996). Applied Linear Statistical Models. 4th Edn. McGraw-Hill. Boston.
Qi, Z. and Kaufman, A. (2002). PEM fuel cell stacks operated under dry-reactant conditions. J. Power Sources 109,2, 469–476.
Read, C. J., Jan, H. J., Thijssen, S. and Carlson, E. J. (2001). Fuel cell auxiliary power systems: Design and cost implications. SAE Paper No. 2001-01-0536.
Venturi, M. and Martin, A. (2001). Liquid-fueled APU fuel cell system for truck application. SAE Paper No. 2001-01-2716.
Venturi, M., Kallio, E., Smith, S. and Baker, J. (2003). Recent results on liquid-fuelled APU for truck application. SAE Paper No. 2003-01-0266.
Zizelman, J., Shaffer, S. and Mukerjee, S. (2002). Solid oxide fuel cell auxiliary power unit — A development update. SAE Paper No. 2002-01-0411.
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Choi, K.S., Jang, S.H., Shin, G.S. et al. Effects of stack array orientation on fuel cell efficiency for auxiliary power unit applications. Int.J Automot. Technol. 11, 429–434 (2010). https://doi.org/10.1007/s12239-010-0052-y
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DOI: https://doi.org/10.1007/s12239-010-0052-y