Details
| Original language | English |
|---|---|
| Pages (from-to) | 477-486 |
| Number of pages | 10 |
| Journal | Fuel Cells |
| Volume | 20 |
| Issue number | 4 |
| Early online date | 29 Jul 2020 |
| Publication status | Published - 27 Aug 2020 |
| Event | 23rd EFCF Conference “Low‐Temperature Fuel Cells, Electrolyzers, H2‐Processing Forum” - Luzern, Switzerland Duration: 2 Jul 2019 → 5 Jul 2019 Conference number: 23 |
Abstract
A proper water management is important for an efficient operation of a polymer electrolyte membrane (PEM) fuel cell system. The humidity distribution in the anode gas channels is highly dependent on the cathode humidity and the resulting transmembrane water transport. Therefore, it can be assumed that the cell humidification is optimal when the relative anode humidity is nearly 100% and homogeneously distributed. In contrast to state-of-the-art approaches, this study focuses on the humidity distribution on anode side in consideration of the anode recirculation loop. Therefore, a macroscopic 1D+1D simulation model was developed, which simulates humidity profiles along the gas channels with consideration of the transmembrane water transport and the anode gas recirculation. This study shows the impact of relevant input parameters, such as pressure, stoichiometry and cathode inlet humidity. Furthermore, the results show that it is possible to reach a nearly homogeneous humidity distribution along the anode gas channels for automotive fuel cell systems. This can be achieved through appropriate operation conditions, e.g., suitable combination of pressure and stoichiometry, and supportive flow directions of the gases and the coolant. The analysis was made for fuel cells operating at full load at system relevant conditions with and without external humidification.
Keywords
- Anode Gas Recirculation, Fuel Cell, Fuel Cell System, Humidity Distribution, Polymer Electrolyte Membrane, Relative Humidity, Water Management, Water Transport
ASJC Scopus subject areas
- Energy(all)
- Renewable Energy, Sustainability and the Environment
- Energy(all)
- Energy Engineering and Power Technology
Sustainable Development Goals
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In: Fuel Cells, Vol. 20, No. 4, 27.08.2020, p. 477-486.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Water Management of PEM Fuel Cell Systems Based on the Humidity Distribution in the Anode Gas Channels
AU - Grimm, M.
AU - Hellmann, M.
AU - Kemmer, H.
AU - Kabelac, S.
N1 - Conference code: 23
PY - 2020/8/27
Y1 - 2020/8/27
N2 - A proper water management is important for an efficient operation of a polymer electrolyte membrane (PEM) fuel cell system. The humidity distribution in the anode gas channels is highly dependent on the cathode humidity and the resulting transmembrane water transport. Therefore, it can be assumed that the cell humidification is optimal when the relative anode humidity is nearly 100% and homogeneously distributed. In contrast to state-of-the-art approaches, this study focuses on the humidity distribution on anode side in consideration of the anode recirculation loop. Therefore, a macroscopic 1D+1D simulation model was developed, which simulates humidity profiles along the gas channels with consideration of the transmembrane water transport and the anode gas recirculation. This study shows the impact of relevant input parameters, such as pressure, stoichiometry and cathode inlet humidity. Furthermore, the results show that it is possible to reach a nearly homogeneous humidity distribution along the anode gas channels for automotive fuel cell systems. This can be achieved through appropriate operation conditions, e.g., suitable combination of pressure and stoichiometry, and supportive flow directions of the gases and the coolant. The analysis was made for fuel cells operating at full load at system relevant conditions with and without external humidification.
AB - A proper water management is important for an efficient operation of a polymer electrolyte membrane (PEM) fuel cell system. The humidity distribution in the anode gas channels is highly dependent on the cathode humidity and the resulting transmembrane water transport. Therefore, it can be assumed that the cell humidification is optimal when the relative anode humidity is nearly 100% and homogeneously distributed. In contrast to state-of-the-art approaches, this study focuses on the humidity distribution on anode side in consideration of the anode recirculation loop. Therefore, a macroscopic 1D+1D simulation model was developed, which simulates humidity profiles along the gas channels with consideration of the transmembrane water transport and the anode gas recirculation. This study shows the impact of relevant input parameters, such as pressure, stoichiometry and cathode inlet humidity. Furthermore, the results show that it is possible to reach a nearly homogeneous humidity distribution along the anode gas channels for automotive fuel cell systems. This can be achieved through appropriate operation conditions, e.g., suitable combination of pressure and stoichiometry, and supportive flow directions of the gases and the coolant. The analysis was made for fuel cells operating at full load at system relevant conditions with and without external humidification.
KW - Anode Gas Recirculation
KW - Fuel Cell
KW - Fuel Cell System
KW - Humidity Distribution
KW - Polymer Electrolyte Membrane
KW - Relative Humidity
KW - Water Management
KW - Water Transport
UR - http://www.scopus.com/inward/record.url?scp=85088561423&partnerID=8YFLogxK
U2 - 10.1002/fuce.202000070
DO - 10.1002/fuce.202000070
M3 - Article
AN - SCOPUS:85088561423
VL - 20
SP - 477
EP - 486
JO - Fuel Cells
JF - Fuel Cells
SN - 1615-6846
IS - 4
T2 - 23rd EFCF Conference “Low‐Temperature Fuel Cells, Electrolyzers, H2‐Processing Forum”
Y2 - 2 July 2019 through 5 July 2019
ER -