Numerical study on the cooling characteristics of a passive-type PEMFC stack
- Authors
- Lee, J.; Kim, B.; Lee, Y.; Kim, Y.
- Issue Date
- 2010
- Keywords
- Air flow rate; Channel configuration; Passive type fuel cell; PEMFC; Temperature distribution
- Citation
- Transactions of the Korean Society of Mechanical Engineers, B, v.34, no.8, pp.767 - 774
- Indexed
- SCOPUS
KCI
- Journal Title
- Transactions of the Korean Society of Mechanical Engineers, B
- Volume
- 34
- Number
- 8
- Start Page
- 767
- End Page
- 774
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/118291
- DOI
- 10.3795/KSME-B.2010.34.8.767
- ISSN
- 1226-4881
- Abstract
- In a passive-type PEMFC stack, axial fens operate to supply both oxidant and coolant to cathode side of the stack. It is possible to make a simple system because the passive-type PEMFC stack does not require additional cooling equipment. However, the performance of a cooling system in which water is used as a coolant is better than that of the air-cooling system To ensure system reliability, it is essential to make cooling system effective by adopting an optimal stack design. In this study, a numerical investigation has been carried out to identify an optimum cooling strategy. Various channel configurations were applied to the test section. The passive-type PEMFC was tested by varying airflow rate distribution at the cathode side and external heat transfer coefficient of the stack. The best cooling performance was achieved when a channel with thick ribs was used, and the overheating at the center of the stack was reduced when a case in which airflow was concentrated at the middle of the stack was used. © 2010 The Korean Society of Mechanical Engineers.
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