Journal of Ocean Engineering and Technology (한국해양공학회지)

Korean Society of Ocean Engineers (한국해양공학회)
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Analysis of the Impact of Dynamic Operation of PEMFCs for Ship Applications

  • Jae Hong Kim (Department of Naval Architecture and Ocean Engineering, Pusan National University) ;
  • Seon Hyeong Lee (Department of Naval Architecture and Ocean Engineering, Pusan National University) ;
  • Jae Heon Kwon (Department of Naval Architecture and Ocean Engineering, Pusan National University) ;
  • Ryu Bin Kwon (Department of Naval Architecture and Ocean Engineering, Pusan National University) ;
  • Kwang Hyo Jung (Department of Naval Architecture and Ocean Engineering, Pusan National University) ;
  • Moonho Son (Carbon Reduction Department, Samsung Heavy Industries R&D Center) ;
  • Hyun Park (Department of Naval Architecture and Ocean Engineering, Pusan National University)
  • Received : 2024.08.29
  • Accepted : 2024.10.06
  • Published : 2024.10.31
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Abstract

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.

Keywords

Acknowledgement

This research was supported by Regional Innovation Strategy (RIS) through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (MOE) (2023RIS-007) and 2-Year Research Grant of Pusan National University.

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