In this study, cell performance tests and measurements of the pressure drop in the anode flow channels of a micro methanol fuel cell (£gDMFC) were conducted. The effect of different operating parameters on £gDMFC performance was experimentally investigated for serpentine flow-field configuration. Experiments were conducted through a serious experiments with different operating conditions of temperature (40¡B60¡B70¡B80oC)¡Bmethanol concentration (0.5¡B1¡B1.5¡B2 M)¡Bchannel width (0.5¡B0.6¡B0.7¡B0.8¡B1¡B1.5¡B2 mm) and flow rate (10-20 sccm). Experimental results are presented in the form of polarization VI curves and PI curves under above operating conditions. The experimental results show that the pressure drop decrease with increasing current density. It has also shown that the pressure drop always increased with the methanol solution flow rates. The relationship between pressure drop and CO2 bubbles production rate would change with the current density increase. Finally, an optimal channel size of 700 £gm for the present £gDMFC could be obtained.
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0723109-085415 |
| Date | 23 July 2009 |
| Creators | Chen, Wei-chih |
| Contributors | Ching-Jeng Ho, Shou-Shing Hsieh, Chin-Chia Su |
| Publisher | NSYSU |
| Source Sets | NSYSU Electronic Thesis and Dissertation Archive |
| Language | Cholon |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0723109-085415 |
| Rights | unrestricted, Copyright information available at source archive |
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