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.
| Original language | English |
|---|---|
| Pages (from-to) | 767-774 |
| Number of pages | 8 |
| Journal | Transactions of the Korean Society of Mechanical Engineers, B |
| Volume | 34 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 2010 Aug |
Keywords
- Air flow rate
- Channel configuration
- PEMFC
- Passive type fuel cell
- Temperature distribution
ASJC Scopus subject areas
- Mechanical Engineering