Analysis of the Impact of Dynamic Operation of PEMFCs for Ship Applications
| Autor: | Jae Hong Kim, Seon Hyeong Lee, Jae Heon Kwon, Ryu Bin Kwon, Kwang Hyo Jung, Moonho Son, Hyun Park |
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| Jazyk: | angličtina |
| Rok vydání: | 2024 |
| Předmět: | |
| Zdroj: | 한국해양공학회지, Vol 38, Iss 5, Pp 199-209 (2024) |
| Druh dokumentu: | article |
| ISSN: | 1225-0767 2287-6715 |
| DOI: | 10.26748/KSOE.2024.071 |
| Popis: | Dynamic responses of polymer electrolyte membrane fuel cells (PEMFC) were analyzed under varying loads to understand the performance of PEMFCs for ship applications. Experiments employing single cells were conducted under a static load with a constant current of 6.64 A and dynamic loads at a ramp rate of 2.5%/s and 5.0%/s, representing a simplified ship operation condition. Under the static load, the voltage drop was 0.054 V at 1.00 A/cm2 and was dominant below 0.40 A/cm2. In contrast, under the dynamic load (5.0%/s ramp rate), the voltage drop was 0.061 V at 1.00 A/cm2 and was dominant above 0.40 A/cm2, with similar behavior observed at the ramp rate of 2.5%/s. To compare performance across load conditions, degradation rates were calculated through linear regression of the voltage drop for each current density. The degradation rate at 1.00 A/cm2 was 0.143 mV/h under static load conditions and 0.174 mV/h under dynamic load conditions (ramp rate: 5.0%/s), indicating approximately 21% greater degradation rates than those observed under static load conditions. These experimental results provide foundational data for PEMFC performance analysis, particularly regarding performance degradation caused by dynamic loads in marine environments. |
| Databáze: | Directory of Open Access Journals |
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