Modular stack-internal air humidification concept-verification in a 1 kW stack

M. Santis, D. Schmid, M. Ruge, S.A. Freunberger, F.N. Büchi, Fuel Cells 4 (2004) 214–218.

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Journal Article | Published | English
Author
Santis, M.; Schmid, D.; Ruge, M.; Freunberger, Stefan AlexanderIST Austria ; Büchi, F.N.
Abstract
The analysis of the complete H2/air polymer electrolyte fuel cell system shows that process air humidification is one of the biggest obstacles for a high performance portable system in the kW range. Therefore, a new concept, with passive process air humidification integrated into the stack, has been developed. Humidification in each cell makes the process independent from the number of cells and the operation mode, thus making the concept fully scalable. Without external humidification the system is simpler, smaller, and cheaper. The humidification of the process air is achieved by transfer of product water from the exhaust air, through part of the membrane, to the dry intake air. Tests have shown that cells using the concept of internal humidification and operated with dry air at 70 ° have almost the same performance as when operated with external humidification. A 42‐cell stack with this internal humidification concept was built and integrated into a portable 1 kW power generator system.
Publishing Year
Date Published
2004-08-01
Journal Title
Fuel Cells
Volume
4
Issue
3
Page
214-218
IST-REx-ID

Cite this

Santis M, Schmid D, Ruge M, Freunberger SA, Büchi FN. Modular stack-internal air humidification concept-verification in a 1 kW stack. Fuel Cells. 2004;4(3):214-218. doi:10.1002/fuce.200400028
Santis, M., Schmid, D., Ruge, M., Freunberger, S. A., & Büchi, F. N. (2004). Modular stack-internal air humidification concept-verification in a 1 kW stack. Fuel Cells, 4(3), 214–218. https://doi.org/10.1002/fuce.200400028
Santis, M., D. Schmid, M. Ruge, Stefan Alexander Freunberger, and F.N. Büchi. “Modular Stack-Internal Air Humidification Concept-Verification in a 1 KW Stack.” Fuel Cells 4, no. 3 (2004): 214–18. https://doi.org/10.1002/fuce.200400028.
M. Santis, D. Schmid, M. Ruge, S. A. Freunberger, and F. N. Büchi, “Modular stack-internal air humidification concept-verification in a 1 kW stack,” Fuel Cells, vol. 4, no. 3, pp. 214–218, 2004.
Santis M, Schmid D, Ruge M, Freunberger SA, Büchi FN. 2004. Modular stack-internal air humidification concept-verification in a 1 kW stack. Fuel Cells. 4(3), 214–218.
Santis, M., et al. “Modular Stack-Internal Air Humidification Concept-Verification in a 1 KW Stack.” Fuel Cells, vol. 4, no. 3, Wiley, 2004, pp. 214–18, doi:10.1002/fuce.200400028.

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