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This study analyzed the effects of operating parameters on power density of a 3-cell PEMFC stack using Design of Experiments (DOE) and found optimal values for cell temperature, humidification temperature, and flow rates.

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Reported parameters

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What they did

System
MFC

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Abstract

In this study, the effects of operating parameters on power density of a 3-cell PEMFC (Polymer Electrolyte Membrane Fuel Cell) stack with serpentine flow channels having 150 cm 2 total active layer have been examined experimentally. Desing Expert, which is the experimental design program (trial version) was used, and the data obtained as a result of the experiments were analyzed by entering this program. A total of 25 experiments were carried out according to the design created with the data entered into the program within the specified operating conditions range. The independent variables were entered which are cell temperature, humidification temperature, H 2 flow rate and O 2 flow rate, and the response is the power density. In this study, the hydrophobic cell stack which has the highest cell performance of which was previous studies results was used. In the optimization study, keeping the power density and maximum H 2 flow to a minimum, the most suitable values are cell temperature 57.826°C, humidification temperature 56.151°C, O 2 flow 1.587 L/min. Finally 432.398 mW/cm 2 power density value was obtained under these operating conditions.

Key findings

  • The hydrophobic cell stack showed the highest cell performance in previous studies.
  • A total of 25 experiments were carried out to analyze the effects of operating parameters on power density.
  • The optimal values for power density and maximum H2 flow were found to be cell temperature 57.826°C, humidification temperature 56.151°C, and O2 flow 1.587 L/min.

Keywords

Stack (abstract data type)Power densityProton exchange membrane fuel cellVolumetric flow rateElectrolyteFlow (mathematics)

Identifiers

DOI
10.1051/e3sconf/202016201004
Journal
E3S Web of Conferences
Year
2019